Essex Property Trust (ESS) 10-K20 Feb 202019 FY Annual reportFinancial data

Company Profile

Cover Page

Cover Page - USD ($)	12 Months Ended
Cover Page - USD ($)	Dec. 31, 2019	Feb. 18, 2020	Jun. 30, 2019
Entity Information [Line Items]
Document Type	10-K
Document Annual Report	true
Document Period End Date	Dec. 31, 2019
Document Transition Report	false
Entity File Number	001-13106
Entity Registrant Name	ESSEX PROPERTY TRUST, INC.
Entity Incorporation, State or Country Code	MD
Entity Tax Identification Number	77-0369576
Entity Address, Address Line One	1100 Park Place, Suite 200
Entity Address, City or Town	San Mateo
Entity Address, State or Province	CA
Entity Address, Postal Zip Code	94403
City Area Code	650
Local Phone Number	655-7800
Title of 12(b) Security	Common Stock, $.0001 par value (Essex Property Trust, Inc.)
Trading Symbol	ESS
Security Exchange Name	NYSE
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Public Float			$ 19,060,937,030
Entity Common Stock, Shares Outstanding		66,172,080
Documents Incorporated by Reference	Portions of the definitive Proxy Statement to be filed with the Securities and Exchange Commission (the "SEC") pursuant to Regulation 14A in connection with the 2020 annual meeting of stockholders of Essex Property Trust, Inc. are incorporated by reference in Part III of this Annual Report on Form 10-K. Such Proxy Statement will be filed with the SEC within 120 days of December 31, 2019 .
Entity Central Index Key	0000920522
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	FY
Amendment Flag	false
Essex Portfolio, L.P.
Entity Information [Line Items]
Entity File Number	333-44467-01
Entity Registrant Name	ESSEX PORTFOLIO, L.P.
Entity Incorporation, State or Country Code	CA
Entity Tax Identification Number	77-0369575
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Current Fiscal Year End Date	--12-31

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Rental properties:
Land and land improvements	$ 2,773,805	$ 2,701,356
Buildings and improvements	11,264,337	10,664,745
Total rental properties	14,038,142	13,366,101
Less: accumulated depreciation	(3,689,482)	(3,209,548)
Net real estate	10,348,660	10,156,553
Real estate under development	546,075	454,629
Co-investments	1,335,339	1,300,140
Total real estate	12,230,074	11,911,322
Cash and cash equivalents-unrestricted	70,087	134,465
Cash and cash equivalents-restricted	11,007	16,930
Marketable securities	144,193	209,545
Notes and other receivables (includes related party receivables of $90.2 million and $11.1 million as of December 31, 2019 and December 31, 2018, respectively)	134,365	71,895
Operating lease right-of-use assets	74,744	0
Prepaid expenses and other assets	40,935	39,439
Total assets	12,705,405	12,383,596
LIABILITIES AND EQUITY
Unsecured debt, net	4,763,206	3,799,316
Mortgage notes payable, net	990,667	1,806,626
Lines of credit	55,000	0
Accounts payable and accrued liabilities	158,017	127,086
Construction payable	48,912	59,345
Dividends payable	135,384	128,529
Operating lease liabilities	76,740
Other liabilities	36,565	33,375
Total liabilities	6,264,491	5,954,277
Commitments and contingencies
Redeemable noncontrolling interest	37,410	35,475
Equity/Capital:
Common stock; $.0001 par value, 670,000,000 shares authorized; 66,091,954 and 65,890,322 shares issued and outstanding, respectively	7	7
Additional paid-in capital	7,121,927	7,093,079
Distributions in excess of accumulated earnings	(887,619)	(812,796)
Limited Partners:
Accumulated other comprehensive loss, net	(13,888)	(13,217)
Total stockholders' equity	6,220,427	6,267,073
Noncontrolling interest	183,077	126,771
Total equity	6,403,504	6,393,844
Total liabilities and equity/capital	12,705,405	12,383,596
Essex Portfolio, L.P.
Rental properties:
Land and land improvements	2,773,805	2,701,356
Buildings and improvements	11,264,337	10,664,745
Total rental properties	14,038,142	13,366,101
Less: accumulated depreciation	(3,689,482)	(3,209,548)
Net real estate	10,348,660	10,156,553
Real estate under development	546,075	454,629
Co-investments	1,335,339	1,300,140
Total real estate	12,230,074	11,911,322
Cash and cash equivalents-unrestricted	70,087	134,465
Cash and cash equivalents-restricted	11,007	16,930
Marketable securities	144,193	209,545
Notes and other receivables (includes related party receivables of $90.2 million and $11.1 million as of December 31, 2019 and December 31, 2018, respectively)	134,365	71,895
Operating lease right-of-use assets	74,744
Prepaid expenses and other assets	40,935	39,439
Total assets	12,705,405	12,383,596
LIABILITIES AND EQUITY
Unsecured debt, net	4,763,206	3,799,316
Mortgage notes payable, net	990,667	1,806,626
Lines of credit	55,000	0
Accounts payable and accrued liabilities	158,017	127,086
Construction payable	48,912	59,345
Dividends payable	135,384	128,529
Operating lease liabilities	76,740
Other liabilities	36,565	33,375
Total liabilities	6,264,491	5,954,277
Commitments and contingencies
Redeemable noncontrolling interest	37,410	35,475
Limited Partners:
Common equity (2,301,653 and 2,305,389 units issued and outstanding, respectively)	57,359	59,061
Accumulated other comprehensive loss, net	(10,432)	(9,738)
Total partners' capital	6,281,242	6,329,613
Noncontrolling interest	122,262	64,231
Total capital	6,403,504	6,393,844
Total liabilities and equity/capital	12,705,405	12,383,596
Essex Portfolio, L.P. \| General Partner
General Partner:
Common equity (66,091,954 and 65,890,322 units issued and outstanding, respectively)	6,234,315	6,280,290
Essex Portfolio, L.P. \| General Partner \| Common Equity
General Partner:
Common equity (66,091,954 and 65,890,322 units issued and outstanding, respectively)	6,234,315	6,280,290
Limited Partners:
Total capital	$ 6,234,315	$ 6,280,290

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Related party liabilities	$ 90.2	$ 11.1
Common stock, par value (in dollars per share)	$ 0.0001	$ 0.0001
Common stock, shares authorized (in shares)	670,000,000	670,000,000
Common stock, shares issued (in shares)	66,091,954	66,091,954
Common stock, shares outstanding (in shares)	65,890,322	65,890,322
Essex Portfolio, L.P.
Related party liabilities	$ 90.2	$ 11.1
Essex Portfolio, L.P. \| General Partner
Common stock, shares issued (in shares)	66,091,954	65,890,322
Common stock, shares outstanding (in shares)	66,091,954	65,890,322
Essex Portfolio, L.P. \| Limited Partner
Common stock, shares issued (in shares)	2,301,653	2,305,389
Common stock, shares outstanding (in shares)	2,301,653	2,305,389

Consolidated Statements of Inco

Consolidated Statements of Income - USD ($) $ in Thousands	12 Months Ended
Consolidated Statements of Income - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Revenues:
Rental and other property	$ 1,450,628	$ 1,390,870	$ 1,354,325
Total revenues	1,460,155	1,400,053	1,363,899
Expenses:
Property operating, excluding real estate taxes	242,525	233,764	229,076
Real estate taxes	155,170	151,570	146,310
Corporate-level property management expenses	32,899	31,062	30,156
Depreciation and amortization	483,750	479,884	468,881
General and administrative	54,262	53,451	41,385
Expensed acquisition and investment related costs	168	194	1,569
Impairment loss	7,105	0	0
Total expenses	975,879	949,925	917,377
Gain (loss) on sale of real estate and land	(3,164)	61,861	26,423
Earnings from operations	481,112	511,989	472,945
Interest expense	(217,339)	(220,492)	(222,894)
Total return swap income	8,446	8,707	10,098
Interest and other income	46,298	23,010	24,604
Equity income from co-investments	112,136	89,132	86,445
Deferred tax expense on unrealized gain on unconsolidated co-investment	(1,457)	0	0
Gain (loss) on early retirement of debt, net	3,717	0	(1,796)
Gain on remeasurement of co-investment	31,535	1,253	88,641
Net income	464,448	413,599	458,043
Net income attributable to noncontrolling interest	(25,162)	(23,446)	(24,984)
Net income available to common stockholders/unitholders	$ 439,286	$ 390,153	$ 433,059
Basic:
Net income available to common stockholders/unitholders (in dollars per share)	$ 6.67	$ 5.91	$ 6.58
Weighted average number of shares/units outstanding during the year (in shares)	65,840,422	66,041,058	65,829,155
Diluted:
Net income available to common stockholders/unitholders (in dollars per share)	$ 6.66	$ 5.90	$ 6.57
Weighted average number of shares/units outstanding during the year (in shares)	65,939,455	66,085,089	65,898,255
Essex Portfolio, L.P.
Revenues:
Rental and other property	$ 1,450,628	$ 1,390,870	$ 1,354,325
Total revenues	1,460,155	1,400,053	1,363,899
Expenses:
Property operating, excluding real estate taxes	242,525	233,764	229,076
Real estate taxes	155,170	151,570	146,310
Corporate-level property management expenses	32,899	31,062	30,156
Depreciation and amortization	483,750	479,884	468,881
General and administrative	54,262	53,451	41,385
Expensed acquisition and investment related costs	168	194	1,569
Impairment loss	7,105	0	0
Total expenses	975,879	949,925	917,377
Gain (loss) on sale of real estate and land	(3,164)	61,861	26,423
Earnings from operations	481,112	511,989	472,945
Interest expense	(217,339)	(220,492)	(222,894)
Total return swap income	8,446	8,707	10,098
Interest and other income	46,298	23,010	24,604
Equity income from co-investments	112,136	89,132	86,445
Deferred tax expense on unrealized gain on unconsolidated co-investment	(1,457)	0	0
Gain (loss) on early retirement of debt, net	3,717	0	(1,796)
Gain on remeasurement of co-investment	31,535	1,253	88,641
Net income	464,448	413,599	458,043
Net income attributable to noncontrolling interest	(9,819)	(9,994)	(10,159)
Net income available to common stockholders/unitholders	$ 454,629	$ 403,605	$ 447,884
Basic:
Net income available to common stockholders/unitholders (in dollars per share)	$ 6.67	$ 5.91	$ 6.58
Weighted average number of shares/units outstanding during the year (in shares)	68,140,900	68,315,999	68,081,730
Diluted:
Net income available to common stockholders/unitholders (in dollars per share)	$ 6.66	$ 5.90	$ 6.57
Weighted average number of shares/units outstanding during the year (in shares)	68,239,933	68,360,030	68,150,830
Management and Other Fees from Affiliates
Revenues:
Management and other fees from affiliates	$ 9,527	$ 9,183	$ 9,574
Management and Other Fees from Affiliates \| Essex Portfolio, L.P.
Revenues:
Management and other fees from affiliates	$ 9,527	$ 9,183	$ 9,574

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Net income	$ 464,448	$ 413,599	$ 458,043
Other comprehensive income (loss):
Change in fair value of derivatives and amortization of swap settlements	(2,948)
Change in fair value of derivatives and amortization of swap settlements before guidance		7,824	12,744
Cash flow hedge losses reclassified to earnings	1,824	0	0
Change in fair value of marketable debt securities, net	281	(118)	3,284
Reversal of unrealized (gains) losses upon the sale of marketable debt securities	(32)	13	(1,909)
Total other comprehensive income (loss)	(875)	7,719	14,119
Comprehensive income	463,573	421,318	472,162
Comprehensive income attributable to noncontrolling interest	(25,133)	(23,702)	(25,451)
Comprehensive income attributable to controlling interest	438,440	397,616	446,711
Essex Portfolio, L.P.
Net income	464,448	413,599	458,043
Other comprehensive income (loss):
Change in fair value of derivatives and amortization of swap settlements	(2,948)
Change in fair value of derivatives and amortization of swap settlements before guidance		7,824	12,744
Cash flow hedge losses reclassified to earnings	1,824	0	0
Change in fair value of marketable debt securities, net	281	(118)	3,284
Reversal of unrealized (gains) losses upon the sale of marketable debt securities	(32)	13	(1,909)
Total other comprehensive income (loss)	(875)	7,719	14,119
Comprehensive income	463,573	421,318	472,162
Comprehensive income attributable to noncontrolling interest	(9,819)	(9,994)	(10,159)
Comprehensive income attributable to controlling interest	$ 453,754	$ 411,324	$ 462,003

Consolidated Statements of Equi

Consolidated Statements of Equity - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock	Additional Paid-In Capital [Member]	Distributions in Excess of Accumulated Earnings [Member]	Accumulated Other Comprehensive Loss, Net	Noncontrolling Interest
Balances at Dec. 31, 2016	$ 6,292,237	$ 6	$ 7,029,679	$ (805,409)	$ (32,098)	$ 100,059
Balances (in shares) at Dec. 31, 2016		65,528
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	458,043			433,059		24,984
Reversal of unrealized gains upon the sale of marketable securities	(1,909)				(1,846)	(63)
Change in fair value of derivatives and amortization of swap settlements before guidance	12,744				12,322	422
Cash flow hedge losses reclassified to earnings	0
Change in fair value of marketable securities, net	3,284				3,176	108
Issuance of common stock under:
Stock option and restricted stock plans, net	26,635		26,635
Stock option and restricted stock plans, net (in shares)		179
Sale of common stock, net	89,055	$ 1	89,054
Sale of common stock, net (in shares)		345
Equity based compensation costs	11,302		9,529			1,773
Changes in the redemption value of redeemable noncontrolling interest	(65)		(136)			71
Changes in noncontrolling interest from acquisition	22,506					22,506
Distributions to noncontrolling interest	(27,051)					(27,051)
Redemptions of noncontrolling interest	(28,580)		(25,190)			(3,390)
Redemptions of noncontrolling interest (in shares)		2
Common stock dividends	(461,376)			(461,376)
Balances at Dec. 31, 2017	6,396,825	$ 7	7,129,571	(833,726)	(18,446)	119,419
Balances (in shares) at Dec. 31, 2017		66,054
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	413,599			390,153		23,446
Reversal of unrealized gains upon the sale of marketable securities	13				13	0
Change in fair value of derivatives and amortization of swap settlements before guidance	7,824				7,564	260
Cash flow hedge losses reclassified to earnings	0
Change in fair value of marketable securities, net	(118)				(114)	(4)
Issuance of common stock under:
Stock option and restricted stock plans, net	6,213		6,213
Stock option and restricted stock plans, net (in shares)		41
Sale of common stock, net	(919)	$ 0	(919)
Sale of common stock, net (in shares)		0
Equity based compensation costs	12,851		11,651			1,200
Retirement of common stock, net	(51,233)		(51,233)
Retirement of common stock, net (in shares)		(210)
Changes in the redemption value of redeemable noncontrolling interest	(1,164)		(1,143)			(21)
Changes in noncontrolling interest from acquisition	7,919					7,919
Distributions to noncontrolling interest	(29,233)					(29,233)
Redemptions of noncontrolling interest	(1,333)		(1,061)			(272)
Redemptions of noncontrolling interest (in shares)		5
Common stock dividends	(491,108)			(491,108)
Balances at Dec. 31, 2018	6,393,844	$ 7	7,093,079	(812,796)	(13,217)	126,771
Balances (in shares) at Dec. 31, 2018		65,890
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	464,448			439,286		25,162
Reversal of unrealized gains upon the sale of marketable securities	(32)				(31)	(1)
Cash flow hedge losses reclassified to earnings	1,824				1,762	62
Change in fair value of derivatives and amortization of swap settlements	(2,948)				(2,849)	(99)
Change in fair value of marketable securities, net	281				272	9
Issuance of common stock under:
Stock option and restricted stock plans, net	33,779		33,779
Stock option and restricted stock plans, net (in shares)		195
Sale of common stock, net	72,539		72,539
Sale of common stock, net (in shares)		228
Equity based compensation costs	12,283		11,029			1,254
Retirement of common stock, net	(56,989)		(56,989)
Retirement of common stock, net (in shares)		(234)
Changes in the redemption value of redeemable noncontrolling interest	(2,008)		(3,427)			1,419
Changes in noncontrolling interest from acquisition	65,472					65,472
Distributions to noncontrolling interest	(28,493)					(28,493)
Redemptions of noncontrolling interest	(36,568)		(28,083)			(8,485)
Redemptions of noncontrolling interest (in shares)		13
Common stock dividends	(514,109)			(514,109)
Balances at Dec. 31, 2019	$ 6,403,504	$ 7	$ 7,121,927	$ (887,619)	$ (13,888)	$ 183,077
Balances (in shares) at Dec. 31, 2019		66,092

Consolidated Statements of Eq_2

Consolidated Statements of Equity (Parenthetical) - $ / shares	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Statement of Stockholders' Equity [Abstract]
Common stock dividends (in dollars per share)	$ 1.95	$ 1.95	$ 1.95	$ 1.95	$ 1.86	$ 1.86	$ 1.86	$ 1.86	$ 7.80	$ 7.44	$ 7

Consolidated Statements of Capi

Consolidated Statements of Capital - USD ($) shares in Thousands, $ in Thousands	3 Months Ended				12 Months Ended
	Dec. 31, 2019	Mar. 31, 2019	Dec. 31, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Jan. 01, 2019	Jan. 01, 2018
Increase (Decrease) in Partners' Capital [Roll Forward]
Net income	$ 135,182	$ 125,505	$ 124,440	$ 96,639	$ 464,448	$ 413,599	$ 458,043
Reversal of unrealized gains upon the sale of marketable securities					(32)	13	(1,909)
Change in fair value of derivatives and amortization of swap settlements						7,824	12,744
Cash flow hedge losses reclassified to earnings					1,824	0	0
Change in fair value of derivatives and amortization of swap settlements					(2,948)
Change in fair value of marketable securities, net					281	(118)	3,284
Issuance of common stock under:
Sale of common stock by general partner, net					72,539	(919)	89,055
Retirement of common stock, net					(56,989)	(51,233)
Changes in the redemption value of redeemable noncontrolling interest					(2,008)	(1,164)	(65)
Changes in noncontrolling interest from acquisition					65,472	7,919	22,506
Distributions to noncontrolling interest					(28,493)	(29,233)	(27,051)
Redemptions					(36,568)	(1,333)	(28,580)
ASU 2016-01
Issuance of common stock under:
Cumulative adjustment to retained earnings									$ 0
ASU 2017-05
Issuance of common stock under:
Cumulative adjustment to retained earnings									123,708
Essex Portfolio, L.P.
Increase (Decrease) in Partners' Capital [Roll Forward]
Balances		6,393,844		6,396,825	6,393,844	6,396,825	6,292,237
Net income	135,182	125,505	124,440	96,639	464,448	413,599	458,043
Reversal of unrealized gains upon the sale of marketable securities					(32)	13	(1,909)
Change in fair value of derivatives and amortization of swap settlements						7,824	12,744
Cash flow hedge losses reclassified to earnings					1,824	0	0
Change in fair value of derivatives and amortization of swap settlements					(2,948)
Change in fair value of marketable securities, net					281	(118)	3,284
Issuance of common stock under:
General partner's stock based compensation, net					33,779	6,213	26,635
Sale of common stock by general partner, net					72,539	(919)	89,055
Equity based compensation costs					12,283	12,851	11,302
Retirement of common stock, net					(56,989)	(51,233)
Changes in the redemption value of redeemable noncontrolling interest					(2,008)	(1,164)	(65)
Changes in noncontrolling interest from acquisition							22,506
Distributions to noncontrolling interest					(10,521)	(12,174)	(11,078)
Redemptions					(36,568)	(1,333)	(28,580)
Distributions declared					(532,081)	(508,167)	(477,349)
Balances	6,403,504		6,393,844		6,403,504	6,393,844	6,396,825
Essex Portfolio, L.P. \| ASU 2016-01
Issuance of common stock under:
Cumulative adjustment to retained earnings								$ 181	0
Essex Portfolio, L.P. \| ASU 2017-05
Issuance of common stock under:
Cumulative adjustment to retained earnings									123,708
Essex Portfolio, L.P. \| Accumulated Other Comprehensive Loss, Net
Increase (Decrease) in Partners' Capital [Roll Forward]
Balances		(9,738)		(15,229)	(9,738)	(15,229)	(29,348)
Reversal of unrealized gains upon the sale of marketable securities					(32)	13	(1,909)
Change in fair value of derivatives and amortization of swap settlements						7,824	12,744
Cash flow hedge losses reclassified to earnings					1,824
Change in fair value of derivatives and amortization of swap settlements					(2,948)
Change in fair value of marketable securities, net					281	(118)	3,284
Issuance of common stock under:
Balances	(10,432)		(9,738)		(10,432)	(9,738)	(15,229)
Essex Portfolio, L.P. \| Accumulated Other Comprehensive Loss, Net \| ASU 2016-01
Issuance of common stock under:
Cumulative adjustment to retained earnings								181	(2,228)
Essex Portfolio, L.P. \| Noncontrolling Interest
Increase (Decrease) in Partners' Capital [Roll Forward]
Balances		64,231		66,410	64,231	66,410	47,873
Net income					9,819	9,994	10,159
Issuance of common stock under:
Changes in the redemption value of redeemable noncontrolling interest					1,310	68	(65)
Changes in noncontrolling interest from acquisition					65,472	0	22,506
Distributions to noncontrolling interest					(10,521)	(12,174)	(11,078)
Redemptions					(8,049)	(67)	(2,985)
Balances	122,262		64,231		122,262	64,231	66,410
Essex Portfolio, L.P. \| General Partner \| Common Equity
Increase (Decrease) in Partners' Capital [Roll Forward]
Balances		$ 6,280,290		$ 6,295,852	$ 6,280,290	$ 6,295,852	$ 6,224,276
Balances (in shares)		65,890		66,054	65,890	66,054	65,528
Net income					$ 439,286	$ 390,153	$ 433,059
Issuance of common stock under:
General partner's stock based compensation, net					$ 33,779	$ 6,213	$ 26,635
General partner's stock based compensation, net (in shares)					195	41	179
Sale of common stock by general partner, net					$ 72,539	$ (919)	$ 89,055
Sale of common stock by general partner, net (in shares)					228	0	345
Equity based compensation costs					$ 11,029	$ 11,651	$ 9,529
Retirement of common stock, net					$ (56,989)	$ (51,233)
Retirement of common stock, net (in shares)					(234)	(210)
Changes in the redemption value of redeemable noncontrolling interest					$ (3,427)	$ (1,143)	(136)
Redemptions					$ (28,083)	$ (1,061)	$ (25,190)
Redemptions (in shares)					(13)	(5)	(2)
Distributions declared					$ (514,109)	$ (491,108)	$ (461,376)
Balances	$ 6,234,315		$ 6,280,290		$ 6,234,315	$ 6,280,290	$ 6,295,852
Balances (in shares)	66,092		65,890		66,092	65,890	66,054
Essex Portfolio, L.P. \| General Partner \| Common Equity \| ASU 2016-01
Issuance of common stock under:
Cumulative adjustment to retained earnings								0	2,234
Essex Portfolio, L.P. \| General Partner \| Common Equity \| ASU 2017-05
Issuance of common stock under:
Cumulative adjustment to retained earnings									119,651
Essex Portfolio, L.P. \| Limited Partner \| Common Equity
Increase (Decrease) in Partners' Capital [Roll Forward]
Balances		$ 59,061		$ 49,792	$ 59,061	$ 49,792	$ 49,436
Balances (in shares)		2,305		2,268	2,305	2,268	2,237
Net income					$ 15,343	$ 13,452	$ 14,825
Issuance of common stock under:
Equity based compensation costs					$ 1,254	$ 1,200	$ 1,773
Equity based compensation costs (in shares)					10	11	33
Changes in the redemption value of redeemable noncontrolling interest					$ 109	$ (89)	$ 136
Changes in noncontrolling interest from acquisition					$ 0	$ 7,919
Changes in noncontrolling interest from acquisition (in shares)					0	31
Redemptions					$ (436)	$ (205)	$ (405)
Redemptions (in shares)					(13)	(5)	(2)
Distributions declared					$ (17,972)	$ (17,059)	$ (15,973)
Balances	$ 57,359		$ 59,061		$ 57,359	$ 59,061	$ 49,792
Balances (in shares)	2,302		2,305		2,302	2,305	2,268
Essex Portfolio, L.P. \| Limited Partner \| Common Equity \| ASU 2016-01
Issuance of common stock under:
Cumulative adjustment to retained earnings								$ 0	(6)
Essex Portfolio, L.P. \| Limited Partner \| Common Equity \| ASU 2017-05
Issuance of common stock under:
Cumulative adjustment to retained earnings									$ 4,057

Consolidated Statements of Ca_2

Consolidated Statements of Capital (Parenthetical) - $ / shares	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Essex Portfolio, L.P. \| Preferred Equity [Member]
Distributions declared (in dollars per share)	$ 7.80	$ 7.44	$ 7

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Cash flows from operating activities:
Net income	$ 464,448	$ 413,599	$ 458,043
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	483,750	479,884	468,881
Amortization of discount on marketable securities	(28,491)	(17,637)	(15,119)
Amortization of (premium) discount and debt financing costs, net	5,689	(2,587)	(5,948)
Gain on sale of marketable securities	(1,271)	(737)	(1,909)
Unrealized (gain) loss on equity securities recognized through income	(5,710)	5,159	0
Company's share of gain on the sales of co-investments	(51,097)	(10,569)	(44,837)
Earnings from co-investments	(61,039)	(78,563)	(41,608)
Operating distributions from co-investments	99,277	99,593	76,764
Accrued interest from notes and other receivables	(6,012)	(5,436)	(4,030)
Impairment loss	7,105	0	0
(Gain) loss on the sale of real estate and land	3,164	(61,861)	(26,423)
Equity-based compensation	7,010	7,135	9,286
(Gain) loss on early retirement of debt, net	(3,717)	0	1,796
Gain on remeasurement of co-investment	(31,535)	(1,253)	(88,641)
Changes in operating assets and liabilities:
Prepaid expenses, receivables, operating lease right-of-use assets, and other assets	5,751	(1,203)	(3,004)
Accounts payable, accrued liabilities, and operating lease liabilities	29,551	(145)	(13,474)
Other liabilities	2,206	1,175	(170)
Net cash provided by operating activities	919,079	826,554	769,607
Additions to real estate:
Acquisitions of real estate and acquisition related capital expenditures	(133,825)	(15,311)	(206,194)
Redevelopment	(70,295)	(73,000)	(69,928)
Development acquisitions of and additions to real estate under development	(158,234)	(182,772)	(137,733)
Capital expenditures on rental properties	(101,689)	(81,684)	(72,812)
Investments in notes receivable	(231,400)	0	(106,461)
Collections of notes and other receivables	168,720	29,500	55,000
Proceeds from insurance for property losses	3,734	1,408	648
Proceeds from dispositions of real estate	23,214	347,587	132,039
Contributions to co-investments	(402,284)	(162,437)	(293,363)
Changes in refundable deposits	5	(414)	837
Purchases of marketable securities	(46,458)	(37,952)	(67,893)
Sales and maturities of marketable securities	(147,531)	(31,521)	(35,481)
Non-operating distributions from co-investments	273,290	83,661	162,439
Net cash used in investing activities	(527,691)	(59,893)	(567,940)
Cash flows from financing activities:
Proceeds from unsecured debt and mortgage notes	1,045,290	298,773	597,981
Payments on unsecured debt and mortgage notes	(1,026,616)	(230,398)	(561,160)
Proceeds from lines of credit	1,939,213	742,961	982,246
Repayments of lines of credit	(1,884,213)	(921,961)	(928,246)
Retirement of common stock	(56,989)	(51,233)	0
Additions to deferred charges	(10,898)	(4,250)	(4,108)
Payments related to debt prepayment penalties	(1,406)	0	(1,630)
Net proceeds from issuance of common stock	72,539	(919)	89,055
Net proceeds from stock options exercised	37,467	6,213	26,635
Payments related to tax withholding for share-based compensation	(3,688)	(869)	(316)
Distributions to noncontrolling interest	(27,993)	(29,050)	(26,552)
Redemption of noncontrolling interest	(36,568)	(1,333)	(28,580)
Redemption of redeemable noncontrolling interest	(73)	(144)	(5,543)
Common and preferred stock dividends paid	(507,754)	(484,182)	(450,625)
Net cash used in financing activities	(461,689)	(676,392)	(310,843)
Net increase (decrease) in unrestricted and restricted cash and cash equivalents	(70,301)	90,269	(109,176)
Unrestricted and restricted cash and cash equivalents at beginning of period	151,395	61,126	170,302
Unrestricted and restricted cash and cash equivalents at end of period	81,094	151,395	61,126
Supplemental disclosure of cash flow information:
Cash paid for interest, net of capitalized interest	194,418	203,803	212,163
Interest capitalized	24,169	18,708	13,860
Operating cash flows from operating leases	6,811	0	0
Supplemental disclosure of noncash investing and financing activities:
Issuance of Operating Partnership units for contributed properties	0	7,919	0
Issuance of DownREIT units in connection with acquisition of real estate	65,472	0	22,506
Transfers between real estate under development to rental properties, net	19,812	100,415	2,413
Transfer from real estate under development to co-investments	671	853	5,075
Reclassifications to redeemable noncontrolling interest from additional paid in capital and noncontrolling interest	2,008	1,165	65
Redemption of redeemable noncontrolling interest via reduction of note receivable	0	4,751	0
Debt assumed in connection with acquisition	143,006	45,804	51,882
Repayment of mortgage note from new financing proceeds	0	52,000	0
Essex Portfolio, L.P.
Cash flows from operating activities:
Net income	464,448	413,599	458,043
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	483,750	479,884	468,881
Amortization of discount on marketable securities	(28,491)	(17,637)	(15,119)
Amortization of (premium) discount and debt financing costs, net	5,689	(2,587)	(5,948)
Gain on sale of marketable securities	(1,271)	(737)	(1,909)
Unrealized (gain) loss on equity securities recognized through income	(5,710)	5,159	0
Company's share of gain on the sales of co-investments	(51,097)	(10,569)	(44,837)
Earnings from co-investments	(61,039)	(78,563)	(41,608)
Operating distributions from co-investments	99,277	99,593	76,764
Accrued interest from notes and other receivables	(6,012)	(5,436)	(4,030)
Impairment loss	7,105	0	0
(Gain) loss on the sale of real estate and land	3,164	(61,861)	(26,423)
Equity-based compensation	7,010	7,135	9,286
(Gain) loss on early retirement of debt, net	(3,717)	0	1,796
Gain on remeasurement of co-investment	(31,535)	(1,253)	(88,641)
Changes in operating assets and liabilities:
Prepaid expenses, receivables, operating lease right-of-use assets, and other assets	5,751	(1,203)	(3,004)
Accounts payable, accrued liabilities, and operating lease liabilities	29,551	(145)	(13,474)
Other liabilities	2,206	1,175	(170)
Net cash provided by operating activities	919,079	826,554	769,607
Additions to real estate:
Acquisitions of real estate and acquisition related capital expenditures	(133,825)	(15,311)	(206,194)
Redevelopment	(70,295)	(73,000)	(69,928)
Development acquisitions of and additions to real estate under development	(158,234)	(182,772)	(137,733)
Capital expenditures on rental properties	(101,689)	(81,684)	(72,812)
Investments in notes receivable	(231,400)	0	(106,461)
Collections of notes and other receivables	168,720	29,500	55,000
Proceeds from insurance for property losses	3,734	1,408	648
Proceeds from dispositions of real estate	23,214	347,587	132,039
Contributions to co-investments	(402,284)	(162,437)	(293,363)
Changes in refundable deposits	5	(414)	837
Purchases of marketable securities	(46,458)	(37,952)	(67,893)
Sales and maturities of marketable securities	(147,531)	(31,521)	(35,481)
Non-operating distributions from co-investments	273,290	83,661	162,439
Net cash used in investing activities	(527,691)	(59,893)	(567,940)
Cash flows from financing activities:
Proceeds from unsecured debt and mortgage notes	1,045,290	298,773	597,981
Payments on unsecured debt and mortgage notes	(1,026,616)	(230,398)	(561,160)
Proceeds from lines of credit	1,939,213	742,961	982,246
Repayments of lines of credit	(1,884,213)	(921,961)	(928,246)
Retirement of common stock	(56,989)	(51,233)	0
Additions to deferred charges	(10,898)	(4,250)	(4,108)
Payments related to debt prepayment penalties	(1,406)	0	(1,630)
Net proceeds from issuance of common stock	72,539	(919)	89,055
Net proceeds from stock options exercised	37,467	6,213	26,635
Payments related to tax withholding for share-based compensation	(3,688)	(869)	(316)
Distributions to noncontrolling interest	(7,288)	(8,518)	(7,752)
Redemption of noncontrolling interest	(36,568)	(1,333)	(28,580)
Redemption of redeemable noncontrolling interest	(73)	(144)	(5,543)
Common and preferred stock dividends paid	(528,459)	(504,714)	(469,425)
Net cash used in financing activities	(461,689)	(676,392)	(310,843)
Net increase (decrease) in unrestricted and restricted cash and cash equivalents	(70,301)	90,269	(109,176)
Unrestricted and restricted cash and cash equivalents at beginning of period	151,395	61,126	170,302
Unrestricted and restricted cash and cash equivalents at end of period	81,094	151,395	61,126
Supplemental disclosure of cash flow information:
Cash paid for interest, net of capitalized interest	194,418	203,803	212,163
Interest capitalized	24,169	18,708	13,860
Operating cash flows from operating leases	6,811	0	0
Supplemental disclosure of noncash investing and financing activities:
Issuance of Operating Partnership units for contributed properties	0	7,919	0
Issuance of DownREIT units in connection with acquisition of real estate	65,472	0	22,506
Transfers between real estate under development to rental properties, net	19,812	100,415	2,413
Transfer from real estate under development to co-investments	671	853	5,075
Reclassifications to redeemable noncontrolling interest from additional paid in capital and noncontrolling interest	2,008	1,165	65
Redemption of redeemable noncontrolling interest via reduction of note receivable	0	4,751	0
Initial recognition of operating lease right-of-use assets	77,645	0	0
Initial recognition of operating lease liabilities	79,693	0	0
Debt assumed in connection with acquisition	143,006	45,804	51,882
Repayment of mortgage note from new financing proceeds	$ 0	$ 52,000	$ 0

Organization

Organization	12 Months Ended
Organization	Dec. 31, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Organization	Organization The accompanying consolidated financial statements present the accounts of Essex Property Trust, Inc. ("Essex" or the "Company"), which include the accounts of the Company and Essex Portfolio, L.P. and its subsidiaries (the "Operating Partnership," which holds the operating assets of the Company). Unless otherwise indicated, the notes to consolidated financial statements apply to both the Company and the Operating Partnership. Essex is the sole general partner of the Operating Partnership with a 96.6% general partner interest and the limited partners owned a 3.4% interest as of December 31, 2019 . The limited partners may convert their Operating Partnership units into an equivalent number of shares of Essex common stock. Total Operating Partnership limited partnership units outstanding were 2,301,653 and 2,305,389 as of December 31, 2019 and 2018 , respectively, and the redemption value of the units, based on the closing price of the Company’s common stock, totaled approximately $692.5 million and $565.3 million , as of December 31, 2019 and 2018 , respectively. The Company has reserved shares of common stock for such conversions. As of December 31, 2019 , the Company owned or had ownership interests in 250 operating apartment communities, aggregating 60,570 apartment homes, excluding the Company's ownership interests in preferred interest co-investments, loan investments, one operating commercial building, and a development pipeline comprised of five consolidated projects and two unconsolidated joint venture projects. The Communities are located in Southern California (primarily Los Angeles, Orange, San Diego, and Ventura counties), Northern California (the San Francisco Bay Area) and the Seattle metropolitan areas.

Summary of Critical and Signifi

Summary of Critical and Significant Accounting Policies	12 Months Ended
Summary of Critical and Significant Accounting Policies	Dec. 31, 2019
Accounting Policies [Abstract]
Summary of Critical and Significant Accounting Policies	Summary of Critical and Significant Accounting Policies (a) Principles of Consolidation and Basis of Presentation The accounts of the Company, its controlled subsidiaries and the variable interest entities ("VIEs") in which it is the primary beneficiary are consolidated in the accompanying financial statements and prepared in accordance with U.S. generally accepted accounting principles ("U.S. GAAP"). In the opinion of management, all adjustments necessary for a fair presentation of the financial position, results of operations and cash flows for the periods presented have been included and are normal and recurring in nature. All significant inter-company accounts and transactions have been eliminated. Certain reclassifications have been made to conform to the current year’s presentation. Noncontrolling interest includes the 3.4% limited partner interests in the Operating Partnership not held by the Company at both December 31, 2019 and 2018 . These percentages include the Operating Partnership’s vested long-term incentive plan units (see Note 14). (b) Accounting Pronouncements Adopted in the Current Year In February 2016, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") No. 2016-02 "Leases (Topic 842)" which requires an entity that is a lessee to classify leases as either finance or operating and to recognize a lease liability and a right-of-use asset for all leases that have a duration of greater than 12 months. Leases of 12 months or less are to be accounted for similar to prior leasing guidance (Topic 840) for operating leases. For lessors, accounting for leases under the new standard is substantially the same as prior leasing guidance for sales-type leases, direct financing leases, and operating leases, but eliminates current real estate specific provisions and changes the treatment of initial direct costs. In July 2018, the FASB issued ASU No. 2018-11 "Leases (Topic 842): Targeted Improvements," which includes a practical expedient that allows lessors to not separate nonlease components from the associated lease component. This provides the Company with the option of not bifurcating certain common area maintenance recoveries as a non-lease component, if certain requirements are met. The Company adopted ASU No. 2016-02 and ASU No. 2018-11 as of January 1, 2019 using the modified retrospective approach and elected a package of practical expedients. There was no adjustment to the opening balance of retained earnings as a result of the adoption. See Note 10, Lease Agreements - Company as Lessor, and Note 11, Lease Agreements - Company as Lessee, for further details. In August 2017, the FASB issued ASU No. 2017-12 "Derivatives and Hedging - Targeted Improvements to Accounting for Hedging Activities," which, among other things, requires entities to present the earnings effect of hedging instruments in the same income statement line item in which the earnings effect of the hedged item is reported. The new standard also adds new disclosure requirements. The Company adopted ASU No. 2017-12 as of January 1, 2019 using the modified retrospective method by applying a cumulative effect adjustment to accumulated other comprehensive loss, net of $0.2 million , representing accumulated net hedge ineffectiveness. Furthermore, as a result of the adoption of this standard, the Company will recognize qualifying hedge ineffectiveness through accumulated other comprehensive income as opposed to current earnings. (c) Recent Accounting Pronouncements In June 2016, the FASB issued ASU No. 2016-13 "Measurement of Credit Losses on Financial Instruments," which amends the current approach to estimate credit losses on certain financial assets, including trade and other receivables, available-for-sale securities, and other financial instruments. Generally, this amendment requires entities to establish a valuation allowance for the expected lifetime losses of these certain financial assets. Subsequent changes in the valuation allowance are recorded in current earnings and reversal of previous losses are permitted. Currently, U.S. GAAP requires entities to write down credit losses only when losses are probable and loss reversals are not permitted. The FASB additionally issued various updates to clarify and amend the guidance provided in ASU 2016-13. In May 2019, the FASB issued ASU 2019-04, "Codification Improvements to Topic 326, Financial Instruments - Credit Losses, Topic 815, Derivatives and Hedging, and Topic 825, Financial Instruments," which, with respect to credit losses, among other things, clarifies and addresses issues related to accrued interest, transfers between classifications of loans or debt securities, recoveries, and variable interest rates. Additionally, in May 2019, the FASB issued ASU 2019-05, "Financial Instruments - Credit Losses (Topic 326): Targeted Transition Relief," which allows entities to irrevocably elect the fair value option on certain financial instruments. The new standards will be effective for the Company beginning January 1, 2020 and early adoption is permitted. The Company expects to apply the new standard on January 1, 2020 and does not expect the adoption to have a material impact on the Company's consolidated results of operations or financial position. In August 2018, the FASB issued ASU No. 2018-13 "Fair Value Measurement (Topic 820): Disclosure Framework - Changes to the Disclosure Requirements for Fair Value Measurement," which eliminates certain disclosure requirements affecting all levels of measurements, and modifies and adds new disclosure requirements for Level 3 measurements. The new standard will be effective for the Company beginning January 1, 2020 and early adoption is permitted. The Company expects to apply the new standard on January 1, 2020 and does not expect the adoption to have a material impact on the Company's consolidated results of operations or financial position. (d) Real Estate Rental Properties Significant expenditures, which improve or extend the life of an asset and have a useful life of greater than one year , are capitalized. Operating real estate assets are stated at cost and consist of land and land improvements, buildings and improvements, furniture, fixtures and equipment, and other costs incurred during their development, redevelopment and acquisition. Expenditures for maintenance and repairs are charged to expense as incurred. The depreciable life of various categories of fixed assets is as follows: Computer software and equipment 3 - 5 years Interior apartment home improvements 5 years Furniture, fixtures and equipment 5 - 10 years Land improvements and certain exterior components of real property 10 years Real estate structures 30 years The Company capitalizes all costs incurred with the predevelopment, development or redevelopment of real estate assets or are associated with the construction or expansion of real property. Such capitalized costs include land, land improvements, allocated costs of the Company’s project management staff, construction costs, as well as interest and related loan fees, property taxes and insurance. Capitalization begins for predevelopment, development, and redevelopment projects when activity commences. Capitalization ends when the apartment home is completed and the property is available for a new tenant or if the development activities cease. The Company allocates the purchase price of real estate on a relative fair value basis to land and building including personal property, and identifiable intangible assets, such as the value of above, below and in-place leases. In making estimates of relative fair values for purposes of allocating purchase price, the Company utilizes a number of sources, including independent land appraisals which consider comparable market transactions, its own analysis of recently acquired or developed comparable properties in our portfolio for land comparables and building replacement costs, and other publicly available market data. In calculating the fair value of identified intangible assets of an acquired property, the in-place leases are valued based on in-place rent rates and amortized over the average remaining term of all acquired leases. The values of the above and below market leases are amortized and recorded as either a decrease (in the case of above market leases) or an increase (in the case of below market leases) to rental revenue over the remaining term of the associated leases acquired. The value of acquired in-place leases are amortized to expense over the average remaining term of the leases acquired. The net carrying value of acquired in-place leases is $1.2 million and $0.1 million as of December 31, 2019 and 2018 , respectively, and are included in prepaid expenses and other assets on the Company's consolidated balance sheets. The Company periodically assesses the carrying value of its real estate investments for indicators of impairment. The judgments regarding the existence of impairment indicators are based on monitoring investment market conditions and performance compared to budget for operating properties including the net operating income for the most recent 12 month period, monitoring estimated costs for properties under development, the Company's ability to hold and its intent with regard to each asset, and each property's remaining useful life. Whenever events or changes in circumstances indicate that the carrying amount of a property held for investment may not be fully recoverable, the carrying amount is evaluated. If the sum of the expected future cash flows (undiscounted and without interest charges) is less than the carrying amount (including intangible assets) of a property held for investment, then the Company will recognize an impairment loss equal to the excess of the carrying amount over the fair value of the property. Fair value of a property is determined using conventional real estate valuation methods, such as discounted cash flow, the property’s unleveraged yield in comparison to the unleveraged yields and/or sales prices of similar communities that have been recently sold, and other third party information, if available. Communities held for sale are carried at the lower of cost and fair value less estimated costs to sell. As of both December 31, 2019 and 2018, no properties were classified as held for sale. The Company recorded an impairment charge of $7.1 million for the year ended December 31, 2019 on a parcel of land that was part of a consolidated co-investment with Canada Pension Plan Investment Board ("CPPIB" or "CPP"). The impairment charge resulted from the Company's offer to acquire CPPIB's 45% interest in the co-investment. The impairment analysis over the parcel’s fair value was determined using internally developed models based on market assumptions. No impairment charges were recorded for the years ended December 31, 2018 or 2017. In the normal course of business, the Company will receive purchase offers for its communities, either solicited or unsolicited. For those offers that are accepted, the prospective buyer will usually require a due diligence period before consummation of the transaction. It is not unusual for matters to arise that result in the withdrawal or rejection of the offer during this process. The Company classifies real estate as "held for sale" when all criteria under the accounting standard for the disposals of long-lived assets have been met. (e) Co-investments The Company owns investments in joint ventures in which it has significant influence, but its ownership interest does not meet the criteria for consolidation in accordance with U.S. GAAP. Therefore, the Company accounts for co-investments using the equity method of accounting. Under the equity method of accounting, the investment is carried at the cost of assets contributed, plus the Company’s equity in earnings less distributions received and the Company’s share of losses. The significant accounting policies of the Company’s co-investment entities are consistent with those of the Company in all material respects. Upon the acquisition of a controlling interest of a co-investment, the co-investment entity is consolidated and a gain or loss is recognized upon the remeasurement of co-investments in the consolidated statement of income equal to the amount by which the fair value of the co-investment interest in the Company previously owned exceeds its carrying value. A majority of the co-investments, excluding most preferred equity investments, compensate the Company for its asset management services and some of these investments may provide promote income if certain financial return benchmarks are achieved. Asset management fees are recognized when earned, and promote fees are recognized when the earnings events have occurred and the amount is determinable and collectible. Any promote fees are reflected in equity income from co-investments. The Company recorded an other-than-temporary impairment charge of $11.5 million for the year ended December 31, 2019 on an unconsolidated co-investment with CPPIB which holds Agora, a 49 unit apartment home community located in Walnut Creek, CA. The other-than-temporary impairment charge resulted from the Company's offer to acquire CPPIB's 45% interest in the co-investment. The impairment analysis over the co-investments fair value was determined using internally developed models based on market assumptions. The impairment is reflected in equity income from co-investments on the consolidated statements of income. No other-than-temporary impairment charges were recorded for the years ended December 31, 2018 or 2017. (f) Revenues and Gains on Sale of Real Estate Revenues from tenants renting or leasing apartment homes are recorded when due from tenants and are recognized monthly as they are earned, which approximates a straight-line basis. Apartment homes are rented under short-term leases (generally, lease terms of 9 to 12 months ). Revenues from tenants leasing commercial space are recorded on a straight-line basis over the life of the respective lease. See Note 4, Revenues, and Note 10, Lease Agreements - Company as Lessor, for additional information regarding such revenues. The Company also generates other property-related revenue associated with the leasing of apartment homes, including storage income, pet rent, and other miscellaneous revenue. Similar to rental income, such revenues are recorded when due from tenants and recognized monthly as they are earned. Apart from rental and other property-related revenue, revenues from contracts with customers are recognized as control of the promised services is passed to the customer. For customer contracts related to management and other fees from affiliates (which includes asset management and property management), the transaction price and amount of revenue to be recognized is determined each quarter based on the management fee calculated and earned for that month or quarter. The contract will contain a description of the service and the fee percentage for management services. Payments from such services are one month or one quarter in arrears of the service performed. Subsequent to the adoption of Accounting Standards Codification ("ASC") 610-20 "Gains and Losses from the Derecognition of Nonfinancial Assets" on January 1, 2018, the Company recognizes any gains on sales of real estate when it transfers control of a property and when it is probable that the Company will collect substantially all of the related consideration. (g) Cash, Cash Equivalents and Restricted Cash Highly liquid investments with original maturities of three months or less when purchased are classified as cash equivalents. Restricted cash balances relate primarily to reserve requirements for capital replacement at certain communities in connection with the Company’s mortgage debt. The following table provides a reconciliation of cash, cash equivalents, and restricted cash reported within the consolidated balance sheets that sum to the total of the same such amounts shown in the consolidated statements of cash flows ($ in thousands): 2019 2018 2017 Cash and cash equivalents - unrestricted $ 70,087 $ 134,465 $ 44,620 Cash and cash equivalents - restricted 11,007 16,930 16,506 Total unrestricted and restricted cash and cash equivalents shown in the consolidated statements of cash flows $ 81,094 $ 151,395 $ 61,126 (h) Marketable Securities The Company reports its equity securities and available for sale debt securities at fair value, based on quoted market prices (Level 1 for the common stock and investment funds, Level 2 for the unsecured bonds and Level 3 for investments in mortgage backed securities, as defined by the FASB standard for fair value measurements as discussed later in Note 2). As of December 31, 2019 and 2018, $3.6 million and $6.7 million , respectively, of equity securities presented within common stock and stock funds in the tables below represent investments measured at fair value, using net asset value as a practical expedient, and are not categorized in the fair value hierarchy. Any unrealized gain or loss in debt securities classified as available for sale is recorded as other comprehensive income. There were no other than temporary impairment charges for the years ended December 31, 2019 , 2018 , and 2017 . Unrealized gains and losses in equity securities, realized gains and losses in debt securities, interest income, and amortization of purchase discounts are included in interest and other income on the consolidated statements of income and comprehensive income. As of December 31, 2019 and 2018 , equity securities and available for sale debt securities consisted primarily of investment-grade unsecured bonds, U.S. treasury securities, and common stock and stock funds. As of December 31, 2019 and 2018 , the Company classified its investments in mortgage backed securities, one of which matured in November 2019 while the other matures in September 2020 , as held to maturity debt securities, and accordingly, these securities are stated at their amortized cost. The discount on the mortgage backed securities is being amortized to interest income based on an estimated yield and the maturity date of the securities. As of December 31, 2019 and 2018 marketable securities consist of the following ($ in thousands): December 31, 2019 Amortized Cost Gross Unrealized Gain Carrying Value Equity securities: Investment funds - debt securities $ 29,588 $ 544 $ 30,132 Common stock and stock funds 34,941 2,927 37,868 Debt securities: Available for sale U.S. treasury securities 2,421 13 2,434 Investment-grade unsecured bonds 1,048 60 1,108 Held to maturity: Mortgage backed securities 72,651 — 72,651 Total - Marketable securities $ 140,649 $ 3,544 $ 144,193 December 31, 2018 Amortized Cost Gross Unrealized Loss Carrying Value Equity securities: Investment funds - debt securities $ 31,934 $ (568 ) $ 31,366 Common stock and stock funds 39,731 (1,671 ) 38,060 Debt securities: Available for sale U.S. treasury securities 8,983 (31 ) 8,952 Investment-grade unsecured bonds 4,125 (145 ) 3,980 Held to maturity: Mortgage backed securities 127,187 — 127,187 Total - Marketable securities $ 211,960 $ (2,415 ) $ 209,545 The Company uses the specific identification method to determine the cost basis of a debt security sold and to reclassify amounts from accumulated other comprehensive loss for such securities. In November 2019, the Company received cash proceeds of $83.1 million from the maturity of an investment in a mortgage backed security. The Company recognized approximately $7.0 million of accelerated interest income related to this maturity. For the years ended December 31, 2019 , 2018 and 2017 , the proceeds from sales and maturities of marketable securities totaled $147.5 million , $31.5 million and $35.5 million , respectively. For the years ended December 31, 2019 , 2018 and 2017 these sales resulted in gains of $1.3 million , $0.7 million , and $1.9 million , respectively. For the years ended December 31, 2019 and 2018 , the portion of equity security unrealized losses or gains that were recognized in income totaled $5.7 million in gains, and $5.2 million in losses, respectively, and were included in interest and other income on the Company's consolidated statements of income and comprehensive income. (i) Notes Receivable Notes receivable relate to real estate financing arrangements including mezzanine and bridge loans. Interest is recognized over the life of the note as interest income. Each note is analyzed to determine if it is impaired. A note is impaired if it is probable that the Company will not collect all contractually due principal and interest. The Company does not accrue interest when a note is considered impaired and an allowance is recorded for any principal and previously accrued interest that are not believed to be collectible. All cash receipts on impaired notes are applied to reduce the principal amount of such notes until the principal has been recovered and, thereafter, are recognized as interest income. As of December 31, 2019 and 2018 , no notes were impaired. (j) Capitalization Policy The Company capitalizes all direct and certain indirect costs, including interest, real estate taxes and insurance, incurred during development and redevelopment activities. Interest is capitalized on real estate assets that require a period of time to get them ready for their intended use. The amount of interest capitalized is based upon the average amount of accumulated development expenditures during the reporting period. Included in capitalized costs are management’s estimates of the direct and incremental personnel costs and indirect project costs associated with the Company's development and redevelopment activities. Indirect project costs consist primarily of personnel costs associated with construction administration and development, including accounting, legal fees, and various corporate and community onsite costs that clearly relate to projects under development. Those costs as well as capitalized development and redevelopment fees totaled $17.9 million , $18.6 million and $18.8 million for the years ended December 31, 2019 , 2018 and 2017 , respectively, most of which relates to development projects. The Company capitalizes leasing costs associated with the lease-up of development communities and amortizes the costs over the life of the leases. The amounts capitalized are immaterial for all periods presented. (k) Fair Value of Financial Instruments The Company values its financial instruments based on the fair value hierarchy of valuation techniques described in the FASB’s accounting standard for fair value measurements. Level 1 inputs are unadjusted, quoted prices in active markets for identical assets or liabilities at the measurement date. Level 2 inputs include quoted prices for similar assets and liabilities in active markets and inputs other than quoted prices observable for the asset or liability. Level 3 inputs are unobservable inputs for the asset or liability. The Company uses Level 1 inputs for the fair values of its cash equivalents and its marketable securities except for unsecured bonds and mortgage backed securities. The Company uses Level 2 inputs for its investments in unsecured bonds, notes receivable, notes payable, and derivative assets/liabilities. These inputs include interest rates for similar financial instruments. The Company’s valuation methodology for derivatives is described in Note 9. The Company uses Level 3 inputs to estimate the fair value of its mortgage backed securities. The Company’s assessment of the significance of a particular input to the fair value measurement in its entirety requires judgment, and considers factors specific to the asset or liability. Management believes that the carrying amounts of the outstanding balances under its lines of credit, and notes and other receivables approximate fair value as of December 31, 2019 and 2018 , because interest rates, yields and other terms for these instruments are consistent with interest rates, yields and other terms currently available for similar instruments. Management has estimated that the fair value of fixed rate debt with a carrying value of $5.2 billion and $5.0 billion at December 31, 2019 and 2018 , respectively, to be $5.4 billion and $5.0 billion at December 31, 2019 and 2018, respectively. Management has estimated the fair value of the Company’s $660.4 million and $619.6 million of variable rate debt at December 31, 2019 and 2018 , respectively, to be $655.8 million and $615.2 million at December 31, 2019 and 2018 , respectively, based on the terms of existing mortgage notes payable, unsecured debt, and variable rate demand notes compared to those available in the marketplace. Management believes that the carrying amounts of cash and cash equivalents, restricted cash, accounts payable and accrued liabilities, construction payables, other liabilities and dividends payable approximate fair value as of December 31, 2019 and 2018 due to the short-term maturity of these instruments. Marketable securities, except mortgage backed securities, are carried at fair value as of December 31, 2019 and 2018 . At December 31, 2019 and 2018 , the Company’s investments in mortgage backed securities had a carrying value of $72.7 million and $127.2 million , respectively. In November 2019, the Company received cash proceeds of $83.1 million from the maturity of an investment in a mortgage backed security. The Company estimated the fair value of its investment in mortgage backed securities at December 31, 2019 and 2018 to be approximately $72.7 million and $129.5 million , respectively. The Company determines the fair value of the mortgage backed securities based on unobservable inputs (Level 3 of the fair value hierarchy) considering the assumptions that market participants would make in valuing these securities. Assumptions such as estimated default rates and discount rates are used to determine expected, discounted cash flows to estimate the fair value. (l) Interest Rate Protection, Swap, and Forward Contracts The Company uses interest rate swaps, interest rate caps, and total return swap contracts to manage interest rate risks. The Company’s objective in using derivatives is to add stability to interest expense and to manage its exposure to interest rate movements or other identified risks. To accomplish this objective, the Company primarily uses interest rate swaps and interest rate caps as part of its cash flow hedging strategy. The Company records all derivatives on its consolidated balance sheets at fair value. The accounting for changes in the fair value of derivatives depends on the intended use of the derivative and the resulting designation. Derivatives used to hedge the exposure to changes in the fair value of an asset, liability, or firm commitment attributable to a particular risk, such as interest rate risk, are considered fair value hedges. Derivatives used to hedge the exposure to variability in expected future cash flows, or other types of forecasted transactions, are considered cash flow hedges. For derivatives designated for accounting purposes as fair value hedges, changes in the fair value of the derivative and the hedged item related to the hedged risk are recognized in earnings. For derivatives designated for accounting purposes as cash flow hedges, the effective portion of changes in the fair value of the derivative is initially reported in other comprehensive income (outside of earnings) and subsequently reclassified to earnings when the hedged transaction affects earnings, and the ineffective portion of changes in the fair value of the derivative is recognized directly in earnings. The Company assesses the initial and ongoing effectiveness of each hedging relationship by comparing the changes in fair value or cash flows of the derivative hedging instrument with the changes in fair value or cash flows of the designated hedged item or transaction. For derivatives not designated for accounting purposes as cash flow hedges, changes in fair value are recognized in earnings. All of the Company’s interest rate swaps are considered cash flow hedges. (m) Income Taxes Generally in any year in which Essex qualifies as a real estate investment trust ("REIT") under the Internal Revenue Code (the "IRC"), it is not subject to federal income tax on that portion of its income that it distributes to stockholders. No provision for federal income taxes, other than the taxable REIT subsidiaries discussed below, has been made in the accompanying consolidated financial statements for each of the years in the three-year period ended December 31, 2019 as Essex has elected to be and believes it qualifies under the IRC as a REIT and has made distributions during the periods in amounts to preclude Essex from paying federal income tax. In order to maintain compliance with REIT tax rules, the Company utilizes taxable REIT subsidiaries for various revenue generating or investment activities. The taxable REIT subsidiaries are consolidated by the Company. In general, the activities and tax related provisions, assets and liabilities are not material. On December 22, 2017, the Tax Cuts and Jobs Act ("Tax Act") was signed into law, which reduced the federal income tax rate from 35% to 21% effective January 1, 2018. As a result of the Tax Act, the Company remeasured its net deferred tax liabilities at December 31, 2017, accordingly a net tax benefit of $1.5 million was recorded. As a partnership, the Operating Partnership is not subject to federal or state income taxes, except that in order to maintain Essex's compliance with REIT tax rules that are applicable to Essex, the Operating Partnership utilizes taxable REIT subsidiaries for various revenue generating or investment activities. The taxable REIT subsidiaries are consolidated by the Operating Partnership. The status of cash dividends distributed for the years ended December 31, 2019 , 2018 , and 2017 related to common stock are classified for tax purposes as follows: 2019 2018 2017 Common Stock Ordinary income 83.81 % 79.72 % 84.04 % Capital gain 13.78 % 15.35 % 13.20 % Unrecaptured section 1250 capital gain 2.41 % 4.93 % 2.76 % 100.00 % 100.00 % 100.00 % (n) Equity-based Compensation The cost of share- and unit-based compensation awards is measured at the grant date based on the estimated fair value of the awards. The estimated fair value of stock options and restricted stock granted by the Company are being amortized over the vesting period. The estimated grant date fair values of the long-term incentive plan units (discussed in Note 14) are being amortized over the expected service periods. (o) Changes in Accumulated Other Comprehensive Loss, by Component Changes in Accumulated Other Comprehensive Loss, Net, by Component Essex Property Trust, Inc. ($ in thousands) Change in fair value and amortization of swap settlements Unrealized gain (loss) on available for sale securities Total Balance at December 31, 2018 $ (13,077 ) $ (140 ) $ (13,217 ) Cumulative effect upon adoption of ASU No. 2017-12 175 — 175 Other comprehensive income before reclassification 7,836 272 8,108 Amounts reclassified from accumulated other comprehensive loss (8,923 ) (31 ) (8,954 ) Other comprehensive income (loss) (912 ) 241 (671 ) Balance at December 31, 2019 $ (13,989 ) $ 101 $ (13,888 ) Changes in Accumulated Other Comprehensive Loss, by Component Essex Portfolio, L.P. ($ in thousands) Change in fair value and amortization of swap settlements Unrealized gain (loss) on available for sale securities Total Balance at December 31, 2018 $ (9,593 ) $ (145 ) $ (9,738 ) Cumulative effect upon adoption of ASU No. 2017-12 181 — 181 Other comprehensive income before reclassification 8,111 281 8,392 Amounts reclassified from accumulated other comprehensive loss (9,235 ) (32 ) (9,267 ) Other comprehensive income (loss) (943 ) 249 (694 ) Balance at December 31, 2019 $ (10,536 ) $ 104 $ (10,432 ) Amounts reclassified from accumulated other comprehensive loss in connection with derivatives are recorded in interest expense on the consolidated statements of income. Realized gains and losses on available for sale debt securities are included in interest and other income on the consolidated statements of income. (p) Redeemable Noncontrolling Interest The carrying value of redeemable noncontrolling interest in the accompanying balance sheets was $37.4 million and $35.5 million as of December 31, 2019 and 2018 , respectively. The limited partners may redeem their noncontrolling interests for c

Real Estate Investments

Real Estate Investments	12 Months Ended
Real Estate Investments	Dec. 31, 2019
Real Estate Investments, Net [Abstract]
Real Estate Investments	Real Estate Investments (a) Acquisitions of Real Estate For the year ended December 31, 2019, the Company purchased four communities consisting of 849 apartment homes for approximately $373.3 million . The table below summarizes acquisition activity for the year ended December 31, 2019 ($ in millions): Property Name Location Apartment Homes Essex Ownership Percentage Quarter in 2019 Purchase Price One South Market (1) San Jose, CA 312 100 % Q1 $ 80.6 Brio (2) Walnut Creek, CA 300 N/A Q2 164.9 Township Redwood City, CA 132 100 % Q3 88.7 Pure Redmond Redmond, WA 105 100 % Q4 39.1 Total 2019 849 $ 373.3 (1) In March 2019, the Company purchased the joint venture partner's 45% membership interest in the One South Market co-investment based on an estimated property valuation of $179.0 million . In conjunction with the acquisition, $86.0 million of mortgage debt that encumbered the property was repaid. (2) In June 2019, the Company acquired Brio for a total contract price of $164.9 million in a DownREIT transaction. As part of the acquisition, the Company assumed $98.7 million of mortgage debt in the community. Based on a VIE analysis performed by the Company, the property was consolidated. The consolidated fair value of the acquisitions listed above were included on the Company's consolidated balance sheet as follows: $72.4 million was included in land and land improvements, $402.4 million was included in buildings and improvements, $3.3 million was included in prepaid expenses and other assets, and $149.0 million was included in mortgage notes payable, within the Company's consolidated balance sheets. In December 2019, the Company purchased the joint venture partner's 25% ownership interest in Hidden Valley, a consolidated community consisting of 324 apartment homes, for a contract price of $24.2 million based on an estimated property valuation of $97.0 million and an encumbrance of $29.7 million of mortgage debt. The purchase was recorded as a redemption of noncontrolling interest in the consolidated statements of equity. For the year ended December 31, 2018, the Company purchased a partial interest in one community consisting of 166 apartment homes for $35.4 million . (b) Sales of Real Estate Investments For the year ended December 31, 2019, the Company sold a land parcel adjacent to the Mylo development project located in Santa Clara, CA, for $10.8 million and recorded an immaterial gain as well as land located in San Mateo, CA, that had been held for future development for $12.5 million and recorded a loss of $3.2 million . For the year ended December 31, 2018, the Company sold two communities consisting of 669 apartment homes for $352.0 million resulting in gains totaling $61.9 million . During 2017, the Company sold one community consisting of 270 apartment homes for $132.5 million resulting in a gain of $26.2 million . (c) Real Estate Assets Held for Sale, net As of December 31, 2019 and 2018, the Company had no assets classified as held for sale. (d) Co-investments The Company has joint ventures which are accounted for under the equity method. The co-investments’ accounting policies are similar to the Company’s accounting policies. The co-investments own, operate, and develop apartment communities. In August 2019, the Company formed a new joint venture entity, BEX IV, LLC ("BEX IV"), with an institutional partner. The Company has a 50.1% ownership interest in the joint venture and an initial equity commitment of $52.2 million . The joint venture is unconsolidated for financial reporting purposes. Also, in August 2019, BEX IV acquired 777 Hamilton, a 195 unit apartment home community located in Menlo Park, CA, for a total contract price of $148.0 million . The property was encumbered by a $44.4 million related party bridge loan from the Company, with an interest rate of 3.25% and a maturity date of November 2019. See Note 6, Related Party Transactions, for additional details. The scheduled maturity was extended to February 2020 but the related party bridge loan was paid off in December 2019 when BEX IV assumed $44.4 million of mortgage debt, with an interest rate of 3.23% and a maturity date of January 2030. In August 2019, Wesco V, LLC ("Wesco V"), one of the Company's joint ventures, acquired The Courtyards at 65th Street, a 331 unit apartment home community located in Emeryville, CA, for a total contract price of $178.0 million . The property was encumbered by an $89.0 million related party bridge loan from the Company, with an interest rate of the London Interbank Offered Rate ("LIBOR") plus 1.30% and a maturity date of December 2019. See Note 6, Related Party Transactions, for additional details. The related party bridge loan was paid off in November 2019 when Wesco V assumed $89.0 million of mortgage debt, with an interest rate of LIBOR plus 1.30% and a maturity date of January 2027. In October 2019, a CPP joint venture, in which Essex had a 55.0% ownership interest, sold Mosso, a 463 unit apartment home community located in San Francisco, CA, for $311.0 million , resulting in a gain of $50.2 million for the Company. In November 2019, Wesco V acquired Velo and Ray Apartments, a 308 unit apartment home community located in Seattle, WA, for a total contract price of $133.0 million . The property was encumbered by an $85.5 million related party bridge loan from the Company, with an interest rate of LIBOR plus 1.30% and a maturity date of February 2020. See Note 6, Related Party Transactions, for additional details. The carrying values of the Company’s co-investments as of December 31, 2019 and 2018 are as follows ($ in thousands, except in parenthetical): Weighted Average Essex Ownership December 31, Percentage (1) 2019 2018 Ownership interest in: CPPIB 55 % $ 345,466 $ 482,507 Wesco I, Wesco III, Wesco IV, and Wesco V 51 % 216,756 194,890 BEXAEW, BEX II, BEX III, and BEX IV 50 % 160,888 121,780 Other 48 % 20,351 34,093 Total operating and other co-investments, net 743,461 833,270 Total predevelopment and development co-investments 50 % 146,944 94,060 Total preferred interest co-investments (includes related party investments of $73.2 million and $51.8 million as of December 31, 2019 and December 31, 2018, respectively - Note 6 - Related Party Transactions for further discussion) 444,934 372,810 Total co-investments, net $ 1,335,339 $ 1,300,140 (1) Weighted average Company ownership percentages are as of December 31, 2019. The combined summarized financial information of co-investments is as follows ($ in thousands): December 31, 2019 2018 Combined balance sheets: (1) Rental properties and real estate under development $ 4,733,762 $ 4,367,987 Other assets 139,562 104,119 Total assets $ 4,873,324 $ 4,472,106 Debt $ 2,442,213 $ 2,190,764 Other liabilities 117,160 106,316 Equity 2,313,951 2,175,026 Total liabilities and equity $ 4,873,324 $ 4,472,106 Company's share of equity $ 1,335,339 $ 1,300,140 Years ended December 31, 2019 2018 2017 Combined statements of income: (1) Property revenues $ 336,922 $ 332,164 $ 312,841 Property operating expenses (115,658 ) (107,584 ) (110,583 ) Net operating income 221,264 224,580 202,258 Gain on sale of real estate 112,918 24,218 90,663 Interest expense (65,665 ) (63,913 ) (62,844 ) General and administrative (9,575 ) (6,379 ) (9,091 ) Depreciation and amortization (121,006 ) (126,485 ) (118,048 ) Net income $ 137,936 $ 52,021 $ 102,938 Company's share of net income (2) $ 112,136 $ 89,132 $ 86,445 (1) Includes preferred equity investments held by the Company. (2) Includes the Company's share of equity income from joint ventures and preferred equity investments, gain on sales of co-investments, co-investment promote income and income from early redemption of preferred equity investments. Includes related party income of $7.5 million , $2.0 million , and $1.9 million for the years ended December 31, 2019, 2018, and 2017, respectively. Operating Co-investments As of December 31, 2019 and 2018 , the Company, through several joint ventures, owned 10,672 and 10,613 apartment homes, respectively, in operating communities. The Company’s book value of these co-investments was $743.5 million and $833.3 million at December 31, 2019 and 2018 , respectively. Predevelopment and Development Co-investments As of December 31, 2019 and 2018 , the Company, through several joint ventures, owned 806 and 814 apartment homes in predevelopment and development communities, respectively. The Company’s book value of these co-investments was $146.9 million and $94.1 million at December 31, 2019 and 2018 , respectively. In 2017, the Company entered into a joint venture to develop Patina at Midtown (formerly known as Ohlone), a multifamily community comprised of 269 apartment homes located in San Jose, CA. The Company has a 50% ownership interest in the development which has a projected total cost of $136.0 million . Construction began in the third quarter of 2017 and the community is expected to open in the first quarter of 2020. The Company has also committed to a $28.9 million preferred equity investment in the project, which accrues an annualized preferred return of 10.0% and matures in 2020. In 2015, the Company entered into a joint venture to develop 500 Folsom, a multifamily community comprised of 537 apartment homes located in San Francisco, CA. The Company has a 50% ownership interest in the development which has a projected total cost of $415.0 million . The property began initial occupancy in the third quarter of 2019 and is expected to be fully stabilized by the fourth quarter of 2020. Preferred Equity Investments As of December 31, 2019 and 2018 , the Company held preferred equity investment interests in several joint ventures which own real estate. The Company’s book value of these preferred equity investments was $444.9 million and $372.8 million at December 31, 2019 and 2018 , respectively, and is included in the co-investments line in the accompanying consolidated balance sheets. During 2019, the Company made commitments to fund $141.7 million of preferred equity investment in five preferred equity investments, some of which include related party sponsors. See Note 6, Related Party Transactions, for additional details. The investments have initial preferred returns ranging from 10.15% - 11.3% , with maturities ranging from July 2022 to October 2024. As of December 31, 2019 , the Company had funded $125.4 million of the $141.7 million of commitments. The remaining committed amount is expected to be funded in 2020. During 2018, the Company made commitments to fund $45.1 million of preferred equity investment in two preferred equity investments, some of which include related party sponsors. See Note 6, Related Party Transactions, for additional details. The investments have initial preferred returns ranging from 10.25% - 12.0% , with maturities ranging from May 2023 to April 2024. As of December 31, 2019 , the Company had funded $41.1 million of the $45.1 million of commitments. The remaining committed amount will be funded when requested by the sponsors. In February 2019, the Company received cash of $10.9 million , including an early redemption fee of $0.1 million , for the full redemption of a related party preferred equity investment in a joint venture that holds property in San Jose, CA. See Note 6, Related Party Transactions, for additional details. In April 2019, the Company received cash of $16.3 million , including an early redemption fee of $0.7 million , for the full redemption of a preferred equity investment in a joint venture that holds property in Santa Ana, CA. In September 2019, the Company received cash of $14.8 million , including an early redemption fee of $0.3 million , for the full redemption of a preferred equity investment in a property located in Redmond, WA. In September 2019, the Company received cash of $16.3 million , including an early redemption fee of $1.4 million , for the full redemption of a preferred equity investment in a property located in Seattle, WA. In October 2019, the Company received cash of $15.8 million , including an early redemption fee of $0.2 million , for the full redemption of a preferred equity investment in a property located in San Jose, CA. In November 2019, the Company received cash of $16.0 million , including an early redemption fee of $0.9 million , for the full redemption of a preferred equity investment in a property located in Bellevue, WA. (e) Real Estate under Development The Company defines development projects as new communities that are being constructed, or are newly constructed and are in a phase of lease-up and have not yet reached stabilized operations. As of December 31, 2019 , the Company's development pipeline was comprised of five consolidated projects under development, two unconsolidated joint venture projects under development and various predevelopment projects, aggregating 1,960 apartment homes, with total incurred costs of $1.0 billion .

Revenues

Revenues	12 Months Ended
Revenues	Dec. 31, 2019
Revenue from Contract with Customer [Abstract]
Revenues	Revenues On January 1, 2018, the Company adopted ASU No. 2014-09, "Revenue from Contracts with Customers" using a modified retrospective transition method applied to those contracts which were not completed as of January 1, 2018. Results for reporting periods after January 1, 2018 are presented under the new standard, while prior period amounts are not adjusted and continue to be reported in accordance with the old revenue recognition standard. Based on a full analysis of applicable contracts, the Company determined that the new standard did not have an impact to reported revenues from prior or current periods. Disaggregated Revenue The following table presents the Company’s revenues disaggregated by revenue source ($ in thousands): 2019 2018 2017 Rental income (1) $ 1,425,585 $ 1,366,590 $ 1,326,464 Other property (1) 25,043 24,280 27,861 Management and other fees from affiliates 9,527 9,183 9,574 Total revenues $ 1,460,155 $ 1,400,053 $ 1,363,899 (1) On January 1, 2019, the Company adopted ASU No. 2016-02 and ASU No. 2018-11. As a result of this adoption, certain amounts previously classified as other property revenue have been reclassified to rental income. Prior period amounts have been adjusted to conform to the current period's presentation. The following table presents the Company’s rental and other property-leasing revenues disaggregated by geographic operating segment ($ in thousands): 2019 2018 2017 Southern California $ 610,240 $ 592,281 $ 574,552 Northern California 569,556 522,561 505,313 Seattle Metro 245,476 236,525 229,871 Other real estate assets (1) 25,356 39,503 44,589 Total rental and other property revenues $ 1,450,628 $ 1,390,870 $ 1,354,325 (1) Other real estate assets consists of revenue generated from retail space, commercial properties, held for sale properties, and disposition properties. Executive management does not evaluate such operating performance geographically. The following table presents the Company’s rental and other property revenues disaggregated by current property category status ($ in thousands): 2019 2018 2017 Same-property (1) $ 1,367,311 $ 1,321,862 $ 1,284,030 Acquisitions (2) 22,924 259 — Development (3) 7,562 2,713 — Redevelopment 20,988 20,345 19,641 Non-residential/other, net (4) 31,843 45,691 50,654 Total rental and other property revenues $ 1,450,628 $ 1,390,870 $ 1,354,325 (1) Properties that have comparable stabilized results as of January 1, 2018 and are consolidated by the Company for the years ended December 31, 2019 , 2018, and 2017. A community is generally considered to have reach stabilized operations once it achieves an initial occupancy of 95% . (2) Acquisitions includes properties acquired which did not have comparable stabilized results as of January 1, 2018. (3) Development includes properties developed which did not have stabilized results as of January 1, 2018. (4) Non-residential/other, net consists of revenue generated from retail space, commercial properties, held for sale properties, disposition properties and student housing. Deferred Revenues and Remaining Performance Obligations When cash payments are received or due in advance of the Company’s performance of contracts with customers, deferred revenue is recorded. The total deferred revenue balance related to such contracts was $3.9 million and $6.2 million as of December 31, 2019 and December 31, 2018 , respectively, and was included in accounts payable and accrued liabilities within the accompanying consolidated balance sheets. The amount of revenue recognized for the year ended December 31, 2019 that was included in the December 31, 2018 deferred revenue balance was $2.3 million , which was included in interest and other income within the consolidated statements of income and comprehensive income. A performance obligation is a promise in a contract to transfer a distinct good or service to the customer, and is the unit of account in the new revenue recognition accounting standard. As of December 31, 2019 , the Company had $3.9 million of remaining performance obligations. The Company expects to recognize approximately 19% of these remaining performance obligations in 2020, an additional 38% through 2022, and the remaining balance thereafter. Practical Expedients The Company does not disclose the value of unsatisfied performance obligations for contracts with an original expected length of one year or less or when variable consideration is allocated entirely to a wholly unsatisfied performance obligation.

Notes and Other Receivables

Notes and Other Receivables	12 Months Ended
Notes and Other Receivables	Dec. 31, 2019
Notes and Other Receivables [Abstract]
Notes and Other Receivables	Notes and Other Receivables Notes and other receivables consist of the following as of December 31, 2019 and 2018 ($ in thousands): 2019 2018 Note receivable, secured, bearing interest at 9.00%, due May 2021 16,828 15,226 Note receivable, secured, bearing interest at 10.75%, due September 2020 (1) — 32,650 Note receivable, secured, bearing interest at 9.90%, due November 2021 12,838 — Related party note receivable, secured, bearing interest at 9.50%, due October 2019 (2)(3) — 6,618 Related party note receivable, secured, bearing variable rate interest, due February 2020 (3) 85,713 — Notes and other receivables from affiliates (4) 4,442 4,457 Other receivables 14,544 12,944 Total notes and receivables $ 134,365 $ 71,895 (1) In December 2019, the Company received cash of $36.1 million for the payoff of this note receivable. (2) In October 2019, the Company received cash of $6.7 million for the payoff of this note receivable. (3) See Note 6, Related Party Transactions, for additional details. (4) These amounts consist of short-term loans outstanding and due from various joint ventures as of December 31, 2019 and 2018, respectively. See Note 6, Related Party Transactions, for additional details.

Related Party Transactions

Related Party Transactions	12 Months Ended
Related Party Transactions	Dec. 31, 2019
Related Party Transactions [Abstract]
Related Party Transactions	Related Party Transactions The Company has adopted written related party transaction guidelines that are intended to cover transactions in which the Company (including entities it controls) is a party and in which any "related person" has a direct or indirect interest. A "related person" means any person who is or was (since the beginning of the last fiscal year) a Company director, director nominee, or executive officer, any beneficial owner of more than 5% of the Company’s outstanding common stock, and any immediate family member of any of the foregoing persons. A related person may be considered to have an indirect interest in a transaction if he or she (i) is an owner, director, officer or employee of or otherwise associated with another company that is engaging in a transaction with the Company, or (ii) otherwise, through one or more entities or arrangements, has an indirect financial interest in or personal benefit from the transaction. The related person transaction review and approval process is intended to determine, among any other relevant issues, the dollar amount involved in the transaction; the nature and value of any related person’s direct or indirect interest (if any) in the transaction; and whether or not (i) a related person’s interest is material, (ii) the transaction is fair, reasonable, and serves the best interest of the Company and its shareholders, and (iii) whether the transaction or relationship should be entered into, continued or ended. The Company’s Chairman and founder, Mr. George Marcus, is the Chairman of the Marcus & Millichap Company ("MMC"), which is a parent company of a diversified group of real estate service, investment, and development firms. Mr. Marcus is also the Co-Chairman of Marcus & Millichap, Inc. ("MMI"), and Mr. Marcus owns a controlling interest in MMI. MMI is a national brokerage firm listed on the NYSE that underwent its initial public offering in 2013. For the years ended December 31, 2019, 2018 and 2017 there were no brokerage commissions paid by the Company to MMI or its affiliates. The Company charges certain fees relating to its co-investments for asset management, property management, development and redevelopment services. These fees from affiliates total $13.8 million , $13.9 million , and $12.6 million for the years ended December 31, 2019 , 2018 and 2017 , respectively. All of these fees are net of intercompany amounts eliminated by the Company. The Company netted development and redevelopment fees of $4.3 million , $4.8 million , and $3.0 million against general and administrative expenses for the years ended December 31, 2019 , 2018 and 2017 , respectively. As described in Note 5, Notes and Other Receivables, the Company has provided short-term loans to affiliates. As of December 31, 2019 and 2018 , $4.4 million and $4.5 million , respectively, of short-term loans remained outstanding due from joint venture affiliates and are classified within notes and other receivables in the accompanying consolidated balance sheets. In November 2016, the Company provided a $6.6 million mezzanine loan to a limited liability company in which MMC holds a significant ownership interest through subsidiaries. The mezzanine loan was classified within notes and other receivables in the accompanying consolidated balance sheets and was paid off in October 2019. In November 2019, the Company provided an $85.5 million related party bridge loan to Wesco V as part of the acquisition of Velo and Ray. The note receivable accrued interest at LIBOR plus 1.30% and was scheduled to mature in February 2020, but was paid off in January 2020. See Note 18, Subsequent Events, for further details. The bridge loan is classified within notes and other receivables in the accompanying consolidated balance sheets. In August 2019, the Company provided an $89.0 million related party bridge loan to Wesco V as part of the acquisition of The Courtyards at 65th Street. The note receivable accrued interest at LIBOR plus 1.30% and was paid off in November 2019. In August 2019, the Company provided a $44.4 million related party bridge loan to BEX IV as part of the acquisition of 777 Hamilton. The note receivable accrued interest at 3.25% . In November 2019, the term of the bridge loan was extended to February 2020, but was paid off in December 2019. In June 2019, the Company acquired Brio, a 300 unit apartment home community located in Walnut Creek, CA. The Company issued DownREIT units to an affiliate of MMC, based on a contract price of $164.9 million . The property was encumbered by $98.7 million of mortgage debt which was assumed by the Company at the time of acquisition. As a result of this transaction, the Company consolidated the property, based on a VIE analysis performed by the Company. In February 2019, the Company funded a $24.5 million preferred equity investment in an entity whose sponsor is an affiliate of MMC, which owns a multifamily development community located in Mountain View, CA. The investment has an initial preferred return of 11.0% and is scheduled to mature in February 2024. In October 2018, the Company funded a $18.6 million preferred equity investment in an entity whose sponsor is an affiliate of MMC. The entity wholly owns a 268 apartment home community development located in Burlingame, CA. This investment accrues interest based on an initial 12.00% preferred return. The investment is scheduled to mature in April 2024. In May 2018, the Company made a commitment to fund a $26.5 million preferred equity investment in an entity whose sponsors include an affiliate of MMC. The entity wholly owns a 400 apartment home community located in Ventura, CA. This investment accrues interest based on a 10.25% preferred return. The investment is scheduled to mature in May 2023. As of December 31, 2019, the Company had funded $22.5 million of the commitment. The remaining committed amount will be funded when requested by the sponsors. In November 2017, the Company provided a $29.5 million related party bridge loan to a property acquired by BEX III. The note receivable accrued interest at 3.5% and was paid off in January 2018. In March 2017, the Company converted its existing $15.3 million preferred equity investment in Sage at Cupertino, a 230 apartment home community located in San Jose, CA, into a 40.5% common equity ownership interest in the property. The Company issued DownREIT units to the other members, including an MMC affiliate, based on an estimated property valuation of $90.0 million . At the time of the conversion, the property was encumbered by $52.0 million of mortgage debt. As a result of this transaction, the Company consolidates the property, based on a consolidation analysis performed by the Company. In 2015, the Company made preferred equity investments totaling $20.0 million in three entities affiliated with MMC that own apartment communities in California. The Company earned a 9.5% preferred return on each such investment. One $5.0 million investment, which was scheduled to mature in 2022, was fully redeemed in 2017. Another $5.0 million investment, which was scheduled to mature in 2022, was fully redeemed in 2018. The remaining investment was fully redeemed in February 2019.

Unsecured Debt

Unsecured Debt	12 Months Ended
Unsecured Debt	Dec. 31, 2019
Debt Disclosure [Abstract]
Unsecured Debt	Unsecured Debt Essex does not have any indebtedness as all debt is incurred by the Operating Partnership. Essex guarantees the Operating Partnership’s unsecured debt including the revolving credit facilities up to the maximum amounts and for the full term of the facilities. Unsecured debt consists of the following as of December 31, 2019 and 2018 ($ in thousands): 2019 2018 Weighted Average Maturity In Years Unsecured bonds private placement - fixed rate $ 199,820 $ 274,624 1.5 Term loan - variable rate 349,189 348,813 2.1 Bonds public offering - fixed rate 4,214,197 3,175,879 7.4 Unsecured debt, net (1) 4,763,206 3,799,316 Lines of credit (2) 55,000 — Total unsecured debt $ 4,818,206 $ 3,799,316 Weighted average interest rate on fixed rate unsecured bonds private placement and bonds public offering 3.8 % 3.9 % Weighted average interest rate on variable rate term loan 2.7 % 3.0 % Weighted average interest rate on lines of credit 2.5 % 3.2 % (1) Includes unamortized discount, net of premiums, of $12.2 million and $7.1 million and unamortized debt issuance costs of $24.5 million and $18.5 million as of December 31, 2019 and 2018 , respectively. (2) Lines of credit, related to the Company's two lines of unsecured credit aggregating $1.24 billion , excludes unamortized debt issuance costs of $3.8 million and $3.9 million as of December 31, 2019 and 2018, respectively. These debt issuance costs are included in prepaid expenses and other assets on the consolidated balance sheets. As of December 31, 2019 and 2018 , the Company had $200.0 million and $275.0 million of private placement unsecured bonds outstanding at an average effective interest rate of 4.4% and 4.5% , respectively. The following is a summary of the Company’s unsecured private placement bonds as of December 31, 2019 and 2018 ($ in thousands): Maturity 2019 2018 Coupon Rate Senior unsecured private placement notes December 2019 — 75,000 4.92 % Senior unsecured private placement notes April 2021 100,000 100,000 4.27 % Senior unsecured private placement notes June 2021 50,000 50,000 4.30 % Senior unsecured private placement notes August 2021 50,000 50,000 4.37 % $ 200,000 $ 275,000 As of both December 31, 2019 and 2018 , the Company had unsecured term loans outstanding of $350.0 million at an average interest rate of 2.7% and 3.0% , respectively. These loans are included in the line "Term loan - variable rate" in the table above, and as of December 31, 2019 and 2018 , the carrying value, net of debt issuance costs, was $349.2 million and $348.8 million , respectively, and the term loan matures in February 2022. The Company had entered into five interest rate swap contracts, for a term of five years with a notional amount totaling $175.0 million , which will effectively convert the interest rate on $175.0 million of the term loan to a fixed rate of 2.3% . These interest rate swaps are accounted for as cash flow hedges. In August 2019, the Company issued $400.0 million of senior unsecured notes due on January 15, 2030, with a coupon rate of 3.000% per annum (the "2030 Notes"), which are payable on January 15 and July 15 of each year, beginning on January 15, 2020. The 2030 Notes were offered to investors at a price of 98.632% of the principal amount thereof. The 2030 Notes are general unsecured senior obligations of the Operating Partnership, rank equally in right of payment with all other senior unsecured indebtedness of the Operating Partnership and are unconditionally guaranteed by Essex Property Trust, Inc. In October 2019, the Company issued an additional $150.0 million of the 2030 notes at a price of 101.685% of the principal amount thereof. These additional notes have substantially identical terms as the 2030 Notes issued in August 2019. The Company used the net proceeds of these offerings to prepay, with no prepayment penalties, certain secured indebtedness under outstanding mortgage notes, to repay indebtedness under its unsecured lines of credit and for other general corporate and working capital purposes. These bonds are included in the line "Bonds public offering-fixed rate" in the table above, and as of December 31, 2019 , the carrying value of the 2030 Notes, net of discount and debt issuance costs was $542.3 million . In February 2019, the Company issued $350.0 million of senior unsecured notes due on March 1, 2029, with a coupon rate of 4.000% per annum (the "2029 Notes"), which are payable on March 1 and September 1 of each year, beginning on September 1, 2019. The 2029 Notes were offered to investors at a price of 99.188% of the principal amount thereof. The 2029 Notes are general unsecured senior obligations of the Operating Partnership, rank equally in right of payment with all other senior unsecured indebtedness of the Operating Partnership and are unconditionally guaranteed by Essex Property Trust, Inc. In March 2019, the Company issued an additional $150.0 million of the 2029 Notes at a price of 100.717% of the principal amount thereof. These additional notes have substantially identical terms as the 2029 Notes issued in February 2019. The Company used the net proceeds of these offerings to repay indebtedness under its unsecured lines of credit and for other general corporate and working capital purposes. These bonds are included in the line "Bonds public offering-fixed rate" in the table above, and as of December 31, 2019 , the carrying value of the 2029 Notes, net of discount and debt issuance costs was $494.1 million . In March 2018, the Company issued $300.0 million of senior unsecured notes due on March 15, 2048 with a coupon rate of 4.500% per annum and are payable on March 15 and September 15 of each year, beginning on September 15, 2018 (the "2048 Notes"). The 2048 Notes were offered to investors at a price of 99.591% of par value. The 2048 Notes are general unsecured senior obligations of the Operating Partnership, rank equally in right of payment with all other senior unsecured indebtedness of the Operating Partnership and are fully and unconditionally guaranteed by Essex Property Trust, Inc. These bonds are included in the line "Bonds public offering-fixed rate" in the table above, and as of December 31, 2019 and 2018 , the carrying value of the 2048 Notes, net of discount and debt issuance costs was $295.6 million and $295.4 million , respectively. In April 2017, the Company issued $350.0 million of senior unsecured notes due on May 1, 2027 with a coupon rate of 3.625% per annum and are payable on May 1 and November 1 of each year, beginning on November 1, 2017 (the "2027 Notes"). The 2027 Notes were offered to investors at a price of 99.423% of par value. The 2027 Notes are general unsecured senior obligations of the Operating Partnership, rank equally in right of payment with all other senior unsecured indebtedness of the Operating Partnership and are fully and unconditionally guaranteed by Essex Property Trust, Inc. These bonds are included in the line "Bonds public offering-fixed rate" in the table above, and as of December 31, 2019 and 2018 , the carrying value of the 2027 Notes, net of discount and debt issuance costs was $346.3 million and $345.8 million , respectively. In April 2016, the Company issued $450.0 million of senior unsecured notes due on April 15, 2026 with a coupon rate of 3.375% per annum and are payable on April 15 th and October 15 th of each year, beginning October 15, 2016 (the "2026 Notes"). The 2026 Notes were offered to investors at a price of 99.386% of par value. The 2026 Notes are general unsecured senior obligations of the Operating Partnership, rank equally in right of payment with all other senior unsecured indebtedness of the Operating Partnership and are fully and unconditionally guaranteed by Essex Property Trust, Inc. These bonds are included in the line "Bonds public offering-fixed rate" in the table above, and as of December 31, 2019 and 2018 , the carrying value of the 2026 Notes, net of discount and debt issuance costs was $445.7 million and $445.0 million , respectively. In March 2015, the Company issued $500.0 million of senior unsecured notes due on April 1, 2025 with a coupon rate of 3.5% per annum and are payable on April 1 st and October 1 st of each year, beginning October 1, 2015 (the "2025 Notes"). The 2025 Notes were offered to investors at a price of 99.747% of par value. The 2025 Notes are general unsecured senior obligations of the Operating Partnership, rank equally in right of payment with all other senior unsecured indebtedness of the Operating Partnership and are fully and unconditionally guaranteed by Essex Property Trust, Inc. These bonds are included in the line "Bonds public offering-fixed rate" in the table above, and as of December 31, 2019 and 2018 , the carrying value of the 2025 Notes, net of discount and debt issuance costs was $497.1 million and $496.5 million , respectively. In April 2014, the Company assumed $900.0 million aggregate principal amount of BRE Property Inc.’s 5.500% senior notes due 2017; 5.200% senior notes due 2021; and 3.375% senior notes due 2023 (together the "BRE Notes"). These notes are included in the line "Bonds public offering-fixed rate" in the table above, and as of December 31, 2019 and 2018 , the carrying value of the BRE Notes, plus unamortized premium was $599.4 million and $601.3 million , respectively. In March 2017, the Company paid off $300.0 million of 5.500% senior notes, at maturity. In April 2014, the Company issued $400.0 million of senior unsecured notes due on May 1, 2024 with a coupon rate of 3.875% per annum and are payable on May 1 st and November 1 st of each year, beginning November 1, 2014 (the "2024 Notes"). The 2024 Notes were offered to investors at a price of 99.234% of par value. The 2024 Notes are general unsecured senior obligations of the Operating Partnership, rank equally in right of payment with all other senior unsecured indebtedness of the Operating Partnership and are fully and unconditionally guaranteed by Essex Property Trust, Inc. These bonds are included in the line "Bonds public offering-fixed rate" in the table above, and as of December 31, 2019 and 2018 , the carrying value of the 2024 Notes, net of discount and debt issuance costs was $397.1 million and $396.5 million , respectively. In April 2013, the Company issued $300.0 million of senior unsecured notes due on May 1, 2023 with a coupon rate of 3.25% per annum and are payable on May 1 st and November 1 st of each year, beginning November 1, 2013 (the "2023 Notes"). The 2023 Notes were offered to investors at a price of 99.152% of par value. The 2023 Notes are general unsecured senior obligations of the Operating Partnership, rank equally in right of payment with all other senior unsecured indebtedness of the Operating Partnership and are fully and unconditionally guaranteed by Essex Property Trust, Inc. These bonds are included in the line "Bonds public offering-fixed rate" in the table above, and as of December 31, 2019 and 2018 , the carrying value of the 2023 Notes, net of discount and debt issuance costs was $298.2 million and $297.6 million , respectively. During the third quarter of 2012, the Company issued $300.0 million of senior unsecured notes due August 2022 with a coupon rate of 3.625% per annum and are payable on February 15th and August 15th of each year, beginning February 15, 2013 (the "2022 Notes"). The 2022 Notes were offered to investors at a price of 98.99% of par value. The 2022 Notes are general unsecured senior obligations of the Operating Partnership, rank equally in right of payment with all other senior unsecured indebtedness of the Operating Partnership and are fully and unconditionally guaranteed by Essex Property Trust, Inc. These bonds are included in the line "Bonds public offering-fixed rate" in the table above, and as of December 31, 2019 and 2018 , the carrying value of the 2022 Notes, net of unamortized discount and debt issuance costs was $298.4 million and $297.8 million , respectively. The following is a summary of the Company’s senior unsecured notes as of December 31, 2019 and 2018 ($ in thousands): Maturity 2019 2018 Coupon Senior notes March 2021 $ 300,000 $ 300,000 5.200 % Senior notes August 2022 300,000 300,000 3.625 % Senior notes January 2023 300,000 300,000 3.375 % Senior notes May 2023 300,000 300,000 3.250 % Senior notes May 2024 400,000 400,000 3.875 % Senior notes April 2025 500,000 500,000 3.500 % Senior notes April 2026 450,000 450,000 3.375 % Senior notes May 2027 350,000 350,000 3.625 % Senior notes March 2029 500,000 — 4.000 % Senior notes January 2030 550,000 — 3.000 % Senior notes March 2048 300,000 300,000 4.500 % $ 4,250,000 $ 3,200,000 The aggregate scheduled principal payments of unsecured debt payable, excluding lines of credit, at December 31, 2019 are as follows ($ in thousands): 2020 $ — 2021 500,000 2022 650,000 2023 600,000 2024 400,000 Thereafter 2,650,000 $ 4,800,000 As of December 31, 2019 , the Company had two unsecured lines of credit aggregating $ 1.24 billion , including a $1.2 billion unsecured line of credit and a $35.0 million working capital unsecured line of credit. As of December 31, 2019 , there was $55.0 million outstanding on the $1.2 billion unsecured line of credit. As of December 31, 2018, there was no amount outstanding on this line. The interest rate is based on a tiered rate structure tied to the Company's credit ratings and was LIBOR plus 0.825% as of December 31, 2019 . In January 2020, the Company amended the $1.2 billion credit facility such that the scheduled maturity date was extended to December 2023 with one 18 -month extension, exercisable at the Company's option. The interest rate on the amended line is based on a tiered rate structure tied to the Company's credit ratings and is currently at LIBOR plus 0.825% . As of both December 31, 2019 and 2018, there was no amount outstanding on the Company's $35.0 million working capital unsecured line of credit. The interest rate on the line is based on a tiered rate structure tied to the Company's credit ratings and was LIBOR plus 0.825% as of December 31, 2019 . The Company’s unsecured lines of credit and unsecured debt agreements contain debt covenants related to limitations on indebtedness and liabilities, and maintenance of minimum levels of consolidated earnings before depreciation, interest and amortization. The Company was in compliance with the debt covenants as of December 31, 2019 and 2018 . In February 2020, the Operating Partnership issued $500.0 million of senior unsecured notes due on March 15, 2032 with a coupon rate of 2.650% per annum (the "2032 Notes"). See Note 18, Subsequent Events, for further details.

Mortgage Notes Payable

Mortgage Notes Payable	12 Months Ended
Mortgage Notes Payable	Dec. 31, 2019
Notes Payable [Abstract]
Mortgage Notes Payable	Mortgage Notes Payable Essex does not have any indebtedness as all debt is incurred by the Operating Partnership. Mortgage notes payable consist of the following as of December 31, 2019 and 2018 ($ in thousands): 2019 2018 Fixed rate mortgage notes payable $ 736,490 $ 1,538,488 Variable rate mortgage notes payable (1) 254,177 268,138 Total mortgage notes payable (2) $ 990,667 $ 1,806,626 Number of properties securing mortgage notes 24 50 Remaining terms 1-27 years 1-28 years Weighted average interest rate 4.1 % 4.3 % The aggregate scheduled principal payments of mortgage notes payable at December 31, 2019 are as follows ($ in thousands): 2020 $ 288,057 2021 31,653 2022 43,188 2023 2,945 2024 3,109 Thereafter 618,383 $ 987,335 (1) Variable rate mortgage notes payable, including $255.4 million in bonds that have been converted to variable rate through total return swap contracts, consists of multifamily housing mortgage revenue bonds secured by deeds of trust on rental properties and guaranteed by collateral pledge agreements, payable monthly at a variable rate as defined in the Loan Agreement (approximately 2.3% at December 2019 and 2.5% at December 2018) including credit enhancement and underwriting fees. Among the terms imposed on the properties, which are security for the bonds, is a requirement that 20% of the apartment homes are subject to tenant income criteria. Once the bonds have been repaid, the properties may no longer be obligated to comply with such tenant income criteria. Principal balances are due in full at various maturity dates from December 2027 through December 2046. The Company had no interest rate cap agreements as of December 31, 2019. As of December 31, 2018, $9.9 million of these bonds was subject to various interest rate cap agreements that limit the maximum interest rate to such bonds. The interest rate cap agreements matured in December 2019. (2) Includes total unamortized premium, net of discounts, of $ 5.9 million and $ 14.9 million and reduced by unamortized debt issuance costs of $2.6 million and $4.2 million as of December 31, 2019 and 2018 , respectively. For the Company’s mortgage notes payable as of December 31, 2019 , monthly interest expense and principal amortization, excluding balloon payments, totaled approximately $5.5 million and $1.4 million , respectively. Second deeds of trust accounted for none of the mortgage notes payable balance as of both December 31, 2019 and 2018. Repayment of debt before the scheduled maturity date could result in prepayment penalties. The prepayment penalty on the majority of the Company’s mortgage notes payable are computed by the greater of (a) 1% of the amount of the principal being prepaid or (b) the present value of the principal being prepaid multiplied by the difference between the interest rate of the mortgage note and the stated yield rate on a U.S. treasury security which generally has an equivalent remaining term as the mortgage note.

Derivative Instruments and Hedg

Derivative Instruments and Hedging Activities	12 Months Ended
Derivative Instruments and Hedging Activities	Dec. 31, 2019
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Instruments and Hedging Activities	Derivative Instruments and Hedging Activities The Company uses interest rate swaps, interest rate caps, and total return swap contracts to manage certain interest rate risks. The valuation of these instruments is determined using widely accepted valuation techniques including discounted cash flow analysis on the expected cash flows of each derivative. This analysis reflects the contractual terms of the derivatives, including the period to maturity, and uses observable market-based inputs, including interest rate curves. The fair values of interest rate swaps and total return swaps are determined using the market standard methodology of netting the discounted future fixed cash receipts (or payments) and the discounted expected variable cash payments (or receipts). The variable cash payments (or receipts) are based on an expectation of future interest rates (forward curves) derived from observable market interest rate curves. The Company incorporates credit valuation adjustments to appropriately reflect both its own nonperformance risk and the respective counterparty’s nonperformance risk in the fair value measurements. In November 2016, the Company replaced its $225.0 million term loan with a $350.0 million five-year term loan with a delayed draw feature. The term loan carries a variable interest rate of LIBOR plus 95 basis points. In 2016, the Company entered into four forward starting interest rate swaps (settlement payments commenced in March 2017) and in 2017, the Company entered into one forward starting interest rate swap (settlement payments commenced in March 2017) all related to the $350.0 million term loan. These five swaps, with a total notional amount of $175.0 million bear an average fixed interest rate of 2.3% and are scheduled to mature in February 2022. These derivatives qualify for hedge accounting. As of December 31, 2019 , the Company had no interest rate caps. As of December 31, 2018, the Company had interest rate caps, which were not accounted for as hedges, totaling a notional amount of $9.9 million that effectively limited the Company’s exposure to interest rate risk by providing a ceiling on the variable interest rate for $9.9 million of the Company’s tax exempt variable rate debt. These interest rate caps matured in December 2019. As of December 31, 2019 and 2018 , the aggregate carrying value of the interest rate swap contracts was an asset of $1.0 million and $5.8 million , respectively, and is included in prepaid expenses and other assets on the consolidated balance sheets, and a liability of $0.2 million and zero , respectively, and is included in other liabilities on the consolidated balance sheets. The aggregate carrying value of the interest rate caps was zero on the balance sheets as of December 31, 2018 . Hedge ineffectiveness related to cash flow hedges, which is included in interest expense, was a loss of $0.2 million , a loss of $0.1 million , and a gain of $0.1 million for the years ended December 31, 2019 , 2018, and 2017 respectively. The Company has four total return swap contracts, with an aggregate notional amount of $255.4 million , that effectively convert $255.4 million of mortgage notes payable to a floating interest rate based on SIFMA plus a spread. The total return swaps provide fair market value protection on the mortgage notes payable to our counterparties during the initial period of the total return swap until the Company's option to call the mortgage notes at par can be exercised. The Company can currently call all four of the total return swaps with $255.4 million of the outstanding debt at par. These derivatives do not qualify for hedge accounting and had a carrying and fair value of zero at both December 31, 2019 and 2018, respectively. These total return swaps are scheduled to mature between September 2021 and November 2022. The realized gains of $8.4 million , $8.7 million , and $10.1 million as of December 31, 2019, 2018, and 2017, respectively, were reported in current year income as total return swap income.

Lease Agreements - Company as L

Lease Agreements - Company as Lessor	12 Months Ended
Lease Agreements - Company as Lessor	Dec. 31, 2019
Leases [Abstract]
Lease Agreements - Company as Lessor	Lease Agreements - Company as Lessor As of December 31, 2019, the Company is a lessor of apartment homes at all of its consolidated operating and lease-up communities, one commercial building, and commercial portions of mixed use communities. The apartment homes are rented under short-term leases (generally, lease terms of 9 to 12 months ) while commercial lease terms typically range from 5 to 20 years . All such leases are classified as operating leases. Although the majority of the Company’s apartment home and commercial leasing income is derived from fixed lease payments, some lease agreements also allow for variable payments. The primary driver of variable leasing income comes from utility reimbursements from apartment home leases and common area maintenance reimbursements from commercial leases. A small number of commercial leases contain provisions for lease payments based on a percentage of gross retail sales over set hurdles. At the end of the term of apartment home leases, unless the lessee decides to renew the lease with the Company at the market rate or gives notice not to renew, the lease will be automatically renewed on a month-to-month term. Apartment home leases include an option to terminate the lease, however the lessee must pay the Company for expected or actual downtime to find a new tenant to lease the space or a lease-break fee specified in the lease agreement. Most commercial leases include options to renew, with the renewal periods extending the term of the lease for no greater than the same period of time as the original lease term. The initial option to renew for commercial leases will typically be based on a fixed price while any subsequent renewal options will generally be based on the current market rate at the time of the renewal. Certain commercial leases contain lease termination options that would require the lessee to pay termination fees based on the expected amount of time it would take the Company to re-lease the space. The Company’s apartment home and commercial lease agreements do not contain residual value guarantees. As the Company is the lessor of real estate assets which tend to either hold their value or appreciate, residual value risk is not deemed to be substantial. Furthermore, the Company carries comprehensive liability, fire, extended coverage, and rental loss insurance for each of its communities as well as limited insurance coverage for certain types of extraordinary losses, such as, for example, losses from terrorism or earthquakes. A maturity analysis of undiscounted future minimum non-cancelable base rent to be received under the above operating leases as of December 31, 2019 is summarized as follows ($ in thousands): Future Minimum Rent 2020 $ 746,150 2021 17,986 2022 14,482 2023 13,302 2024 11,542 Thereafter 26,967 $ 830,429 As of December 31, 2018, in accordance with previously applicable lease accounting guidance, ASC 840 "Leases", the future minimum non-cancelable base rent to be received under one commercial building and commercial portions of mixed use communities, for which the Company was the lessor, was as follows ($ in thousands): Future Minimum Rent 2019 $ 16,386 2020 15,842 2021 14,412 2022 13,324 2023 12,181 Thereafter 33,034 $ 105,179 Practical Expedients The Company has elected to account for operating lease (e.g., fixed payments including rent) and non-lease components (e.g., utility reimbursements and common-area maintenance costs) as a single combined lease component under ASC 842 "Leases" as the lease components are the predominant elements of the combined components. As part of the transition to ASC Topic 842, the Company has elected to use the modified retrospective transition method with the new standard being applied as of the January 1, 2019 adoption date. Additionally, the Company has elected, as of the adoption date, not to reassess whether expired or existing contracts contain leases under the new definition of a lease, not to reassess the lease classification for expired or existing leases, not to reassess whether previously capitalized initial direct costs would qualify for capitalization under ASC Topic 842, and not to reassess whether existing or expired land easements meet the definition of a lease.

Lease Agreements - Company as_2

Lease Agreements - Company as Lessee	12 Months Ended
Lease Agreements - Company as Lessee	Dec. 31, 2019
Leases [Abstract]
Lease Agreements - Company as Lessee	Lease Agreements - Company as Lessee As of December 31, 2019, the Company is a lessee of corporate office space, ground leases and a parking lease associated with various consolidated properties, and equipment. Lease terms for the Company's office leases, in general, range between 5 to 10 years while ground leases and the parking lease have terms typically ranging from 20 to 85 years . The corporate office leases occasionally contain renewal options of approximately five years while certain ground leases contain renewal options that can extend the lease term from approximately 10 to 39 years . A majority of the Company’s ground leases and the parking lease are subject to changes in the Consumer Price Index ("CPI"). Furthermore, certain of the Company’s ground leases include rental payments based on a percentage of gross or net income. While lease liabilities are not remeasured as a result of changes in the CPI or percentage of gross or net income, such changes are treated as variable lease payments and recognized in the period in which the obligation for those payments was incurred. The Company’s lease agreements do not contain any residual value guarantees or restrictive covenants. Operating lease right-of-use assets and operating lease liabilities are recognized based on the present value of lease payments over the lease term at commencement date. Because most of the Company’s leases do not provide an implicit rate, the Company uses its incremental borrowing rate based on the information available at commencement date in determining the present value of lease payments. As of December 31, 2019 and 2018, the Company had no material finance leases. Supplemental consolidated balance sheet information related to leases as of December 31, 2019 is as follows ($ in thousands): Classification December 31, 2019 Assets Operating lease right-of-use assets Operating lease right-of-use assets $ 74,744 Total leased assets $ 74,744 Liabilities Operating lease liabilities Operating lease liabilities 76,740 Total lease liabilities $ 76,740 The components of lease expense for the year ended December 31, 2019 were as follows ($ in thousands): December 31, 2019 Operating lease cost $ 6,745 Variable lease cost 783 Short-term lease cost 610 Sublease income (436 ) Total lease cost $ 7,702 A maturity analysis of lease liabilities as of December 31, 2019 are as follows ($ in thousands): Operating Leases 2020 $ 6,855 2021 6,877 2022 6,888 2023 6,860 2024 6,585 Thereafter 146,673 Total lease payments $ 180,738 Less: Imputed interest (103,998 ) Present Value of lease liabilities $ 76,740 Lease term and discount rate information for leases at December 31, 2019 are as follows: Weighted-average of remaining lease terms (years) Operating Leases 39 Weighted-average of discount rates Operating Leases 4.99 % As of December 31, 2018, in accordance with previously applicable lease accounting guidance, ASC 840, the total minimum lease commitments under operating leases was as follows ($ in thousands): Future Minimum Rent 2019 $ 6,811 2020 6,855 2021 6,877 2022 6,888 2023 6,860 Thereafter 153,258 $ 187,549 Practical Expedients As part of the transition to ASC Topic 842, the Company elected to use the modified retrospective transition method with the new standard being applied as of the January 1, 2019 adoption date. Additionally, the Company has elected, as of the adoption date, not to reassess whether expired or existing contracts contain leases under the new definition of a lease, not to reassess the lease classification for expired or existing leases, not to reassess whether previously capitalized initial direct costs would qualify for capitalization under ASC Topic 842, and not to reassess whether existing or expired land easements meet the definition of a lease. Leases with an initial term of 12 months or less are not recorded on the balance sheet. The Company recognizes the lease expense for such leases on a straight-line basis over the lease term. The Company has elected to account for lease components (e.g., fixed payments including rent) and non-lease components (e.g., common-area maintenance costs) as a single combined lease component as the lease components are the predominant elements of the combined components.

Equity Transactions

Equity Transactions	12 Months Ended
Equity Transactions	Dec. 31, 2019
Equity [Abstract]
Equity Transactions	Equity Transactions Common Stock Offerings In September 2018, the Company entered into a new equity distribution agreement pursuant to which the Company may offer and sell shares of its common stock having an aggregate gross sales price of up to $900.0 million (the "2018 ATM Program"). Upon entering into the 2018 ATM Program, the Company simultaneously terminated its existing equity distribution agreements, which were entered into in March 2016 in connection with its prior at-the-market equity offering program (the "2016 ATM Program"). In connection with the 2018 ATM Program, the Company may also enter into related forward sale agreements whereby, at the Company’s discretion, it may sell shares of its common stock under the 2018 ATM Program under forward sale agreements. The use of a forward sale agreement would allow the Company to lock in a share price on the sale of shares of its common stock at the time the agreement is executed, but defer receiving the proceeds from the sale of shares until a later date. The Company anticipates using the net proceeds, which are contributed to the Operating Partnership, to acquire, develop, or redevelop properties, which primarily will be apartment communities, to make other investments and for working capital or general corporate purposes, which may include the repayment of indebtedness. For the year ended December 31, 2019, the Company issued 228,271 shares of common stock through the 2018 ATM Program at an average price of $321.56 per share for proceeds of $73.4 million . For the year ended December 31, 2018, the Company did not sell any shares of its common stock through the 2018 ATM Program or through the 2016 ATM Program. For the year ended December 31, 2017, the Company issued 345,444 shares of common stock, through the 2016 ATM program, at an average price of $260.38 per share for proceeds of $89.9 million . As of December 31, 2019, there were no outstanding forward sale agreements, and $826.6 million of shares remained available to be sold under this program. Operating Partnership Units and Long-Term Incentive Plan ("LTIP") Units As of December 31, 2019 and 2018 , the Operating Partnership had outstanding 2,158,396 and 2,171,309 operating partnership units and 143,257 and 134,080 vested LTIP units, respectively. The Operating Partnership’s general partner, Essex, owned 96.6% of the partnership interests in the Operating Partnership as of both December 31, 2019 and 2018 , and Essex is responsible for the management of the Operating Partnership’s business. As the general partner of the Operating Partnership, Essex effectively controls the ability to issue common stock of Essex upon a limited partner’s notice of redemption. Essex has generally acquired Operating Partnership limited partnership units ("OP Units") upon a limited partner’s notice of redemption in exchange for shares of its common stock. The redemption provisions of OP Units owned by limited partners that permit Essex to settle in either cash or common stock at the option of Essex were further evaluated in accordance with applicable accounting guidance to determine whether temporary or permanent equity classification on the balance sheet is appropriate. The Operating Partnership evaluated this guidance, including the requirement to settle in unregistered shares, and determined that, with few exceptions, these OP Units meet the requirements to qualify for presentation as permanent equity. LTIP units represent an interest in the Operating Partnership for services rendered or to be rendered by the LTIP unitholder in its capacity as a partner, or in anticipation of becoming a partner, in the Operating Partnership. Upon the occurrence of specified events, LTIP units may over time achieve full parity with common units of the Operating Partnership for all purposes. Upon achieving full parity, LTIP units will be exchanged for an equal number of the OP Units. The collective redemption value of OP Units and LTIP units owned by the limited partners, not including Essex, was approximately $692.5 million and $565.3 million based on the closing price of Essex's common stock as of December 31, 2019 and 2018 , respectively.

Net Income Per Common Share and

Net Income Per Common Share and Net Income Per Common Unit	12 Months Ended
Net Income Per Common Share and Net Income Per Common Unit	Dec. 31, 2019
Net Income Per Common Share and Net Income Per Unit [Abstract]
Net Income Per Common Share and Net Income Per Common Unit	Net Income Per Common Share and Net Income Per Common Unit Essex Property Trust, Inc. Basic and diluted income per share is calculated as follows for the years ended December 31 ($ in thousands, except share and per share amounts): 2019 2018 2017 Income Weighted- average Common Shares Per Common Share Amount Income Weighted- average Common Shares Per Common Share Amount Income Weighted- average Common Shares Per Common Share Amount Basic: Net income available to common stockholders $ 439,286 65,840,422 $ 6.67 $ 390,153 66,041,058 $ 5.91 $ 433,059 65,829,155 $ 6.58 Effect of Dilutive Securities Stock options — 99,033 — 44,031 — 69,100 Diluted: Net income available to common stockholders $ 439,286 65,939,455 $ 6.66 $ 390,153 66,085,089 $ 5.90 $ 433,059 65,898,255 $ 6.57 The table above excludes from the calculations of diluted earnings per share weighted average convertible OP Units of 2,300,478 , 2,274,941 , and 2,252,575 , which include vested Series Z-1 Incentive Units, 2014 Long-Term Incentive Plan Units, and 2015 Long-Term Incentive Plan Units, for the years ended December 31, 2019 , 2018 and 2017 , respectively, because they were anti-dilutive. The related income allocated to these convertible OP Units aggregated $15.3 million , $13.5 million , and $14.8 million for the years ended December 31, 2019 , 2018 and 2017 , respectively. Additionally, the table excludes all DownREIT units for which the Operating Partnership has the ability and intention to redeem the units for cash and does not consider them to be common stock equivalents. Stock options of 115,066 , 160,039 , and 154,793 , for the years ended December 31, 2019 , 2018 , and 2017 , respectively, were excluded from the calculation of diluted earnings per share because the assumed proceeds per share of such options plus the average unearned compensation were greater than the average market price of the common stock for the years ended and, therefore, were anti-dilutive. Essex Portfolio, L.P. Basic and diluted income per unit is calculated as follows for the years ended December 31 ($ in thousands, except unit and per unit amounts): 2019 2018 2017 Income Weighted- average Common Units Per Common Unit Amount Income Weighted- average Common Units Per Common Unit Amount Income Weighted- average Common Units Per Common Unit Amount Basic: Net income available to common unitholders $ 454,629 68,140,900 $ 6.67 $ 403,605 68,315,999 $ 5.91 $ 447,884 68,081,730 $ 6.58 Effect of Dilutive Securities Stock options — 99,033 — 44,031 — 69,100 Diluted: Net income available to common unitholders $ 454,629 68,239,933 $ 6.66 $ 403,605 68,360,030 $ 5.90 $ 447,884 68,150,830 $ 6.57 Stock options of 115,066 , 160,039 , and 154,793 , for the years ended December 31, 2019 , 2018 , and 2017 , respectively, were excluded from the calculation of diluted earnings per unit because the assumed proceeds per unit of these options plus the average unearned compensation were greater than the average market price of the common unit for the years ended and, therefore, were anti-dilutive. Additionally, the table excludes all DownREIT units for which the Operating Partnership has the ability and intention to redeem the units for cash and does not consider them to be common stock equivalents.

Equity Based Compensation Plans

Equity Based Compensation Plans	12 Months Ended
Equity Based Compensation Plans	Dec. 31, 2019
Share-based Payment Arrangement, Noncash Expense [Abstract]
Equity Based Compensation Plans	Equity Based Compensation Plans Stock Options and Restricted Stock In May 2018, stockholders approved the Company’s 2018 Stock Award and Incentive Compensation Plan ("2018 Plan"). The 2018 Plan serves as the successor to the Company’s 2013 Stock Incentive Plan (the "2013 Plan"). The Company’s 2018 Plan provides incentives to attract and retain officers, directors and key employees. The 2018 Plan provides for the grant of stock-based awards to employees, directors and consultants of the Company and its affiliates. The aggregate number of shares of the Company’s common stock available for issuance pursuant to awards granted under the 2018 Plan is 2,000,000 shares, plus the number of shares authorized for grants and available for issuance under the 2013 Plan as of the effective date of the 2018 Plan and the number of shares subject to outstanding awards under the 2013 Plan that are forfeited or otherwise not issued under such awards. No further awards will be granted under the 2013 Plan and the shares that remained available for future issuance under the 2013 Plan as of the effective date of the 2018 Plan will be available for issuance under the 2018 Plan. In connection with the adoption of the 2018 Plan, the Board delegated to the Compensation Committee of the Board the authority to administer the 2018 Plan. Equity-based compensation costs for options and restricted stock under the fair value method totaled $11.4 million , $12.1 million , and $9.8 million for years ended December 31, 2019 , 2018 and 2017 , respectively. For each of the years ended December 31, 2019 , 2018 and 2017 equity-based compensation costs included $3.5 million related to restricted stock for bonuses awarded based on asset dispositions, which is recorded as a cost of real estate and land sold, respectively. Stock-based compensation for options and restricted stock related to recipients who are direct and incremental to projects under development were capitalized and totaled $1.6 million , $2.0 million , and $1.5 million for the years ended December 31, 2019 , 2018 and 2017 , respectively. The intrinsic value of the options exercised totaled $18.7 million , $3.1 million , and $16.7 million , for the years ended December 31, 2019 , 2018 , and 2017 respectively. The intrinsic value of the options exercisable totaled $23.5 million and $12.5 million as of December 31, 2019 and 2018 , respectively. Total unrecognized compensation cost related to unvested stock options totaled $5.3 million as of December 31, 2019 and the unrecognized compensation cost is expected to be recognized over a period of 2.2 years. The average fair value of stock options granted for the years ended December 31, 2019 , 2018 and 2017 was $24.02 , $26.13 and $22.41 , respectively. Certain stock options granted in 2019 , 2018 , and 2017 included a $100 cap, $125 cap, or no cap on the appreciation of the market price over the exercise price. The fair value of stock options was estimated on the date of grant using the Black-Scholes option pricing model with the following weighted average assumptions used for grants: 2019 2018 2017 Stock price $ 304.85 $ 262.09 $ 240.56 Risk-free interest rates 2.01 % 2.76 % 2.30 % Expected lives 6 years 6 years 6 years Volatility 19.56 % 24.89 % 24.10 % Dividend yield 2.72 % 2.81 % 2.90 % A summary of the status of the Company’s stock option plans as of December 31, 2019 , 2018 , and 2017 and changes during the years ended on those dates is presented below: 2019 2018 2017 Shares Weighted- average exercise price Shares Weighted- average exercise price Shares Weighted- average exercise price Outstanding at beginning of year 612,954 $ 224.57 536,208 $ 211.41 557,648 $ 181.50 Granted 148,147 304.85 119,361 262.09 164,677 240.56 Exercised (182,817 ) 205.25 (39,175 ) 159.05 (176,489 ) 146.86 Forfeited and canceled (5,313 ) 257.87 (3,440 ) 221.80 (9,628 ) 160.40 Outstanding at end of year 572,971 251.10 612,954 224.57 536,208 211.41 Options exercisable at year end 305,379 223.90 322,837 206.63 223,796 191.09 The following table summarizes information about restricted stock outstanding as of December 31, 2019 , 2018 and 2017 and changes during the years ended: 2019 2018 2017 Shares Weighted- average grant price Shares Weighted- average grant price Shares Weighted- average grant price Unvested at beginning of year 91,058 $ 180.99 90,823 $ 163.49 58,349 $ 149.11 Granted 41,643 235.93 51,945 194.70 62,706 177.28 Vested (13,222 ) 143.56 (48,212 ) 150.76 (29,675 ) 170.17 Forfeited and canceled (4,602 ) 158.06 (3,498 ) 158.71 (557 ) 119.37 Unvested at end of year 114,877 197.62 91,058 180.99 90,823 163.49 The unrecognized compensation cost related to unvested restricted stock totaled $12.7 million as of December 31, 2019 and is expected to be recognized over a period of 2.1 years. Long-Term Incentive Plans – LTIP Units On December 9, 2014, the Operating Partnership issued 44,750 LTIP units under the 2015 Long-Term Incentive Plan Award agreements to executives of the Company. The 2015 Long-Term Incentive Plan Units (the "2015 LTIP Units") are subject to forfeiture based on performance-based and service based conditions. An additional 24,000 LTIP units were granted subject only to performance-based criteria and were fully vested on the date granted. The 2015 LTIP Units, that are subject to vesting, will vest at 20% per year on each of the first five anniversaries of the initial grant date. The 2015 LTIP Units performance conditions measurement ended on December 9, 2015 and 95.75% of the units awarded were earned by the recipients. 2015 LTIP Units not earned based on the performance-based criteria were automatically forfeited by the recipients. The 2015 LTIP Units, once earned and vested, are convertible one -for-one into OP Units which, in turn, are convertible into common stock of the Company subject to a ten-year liquidity restriction. In December 2013, the Operating Partnership issued 50,500 LTIP units under the 2014 Long-Term Incentive Plan Award agreements to executives of the Company. The 2014 Long-Term Incentive Plan Units (the "2014 LTIP Units") were subject to forfeiture based on performance-based conditions and are currently subject to service based vesting. The 2014 LTIP Units vest 25% per year on each of the first four anniversaries of the initial grant date. In December 2014, the Company achieved the performance criteria and all of the 2014 LTIP Units awarded were earned by the recipients, subject to satisfaction of service based vesting conditions. The 2014 LTIP Units are convertible one -for-one into OP Units which, in turn, are convertible into common stock of the Company subject to a ten year liquidity restriction. The estimated fair value of the 2015 LTIP Units and 2014 LTIP Units were determined on the grant date using Monte Carlo simulations under a risk-neutral premise and considered Essex’s stock price on the date of grant, the unpaid dividends on unvested units and the discount factor for 10 years of illiquidity. Prior to 2013, the Company issued Series Z Incentive Units and Series Z-1 Incentive Units (collectively referred to as "Z Units") of limited partnership interest in the Operating Partnership. Vesting in the Z Units is based on performance criteria established in the plan. The criteria can be revised by the Compensation Committee of the Board of Directors if the Committee deems that the plan's criterion is unachievable for any given year. The sale of Z Units is contractually prohibited. Z Units are convertible into Operating Partnership units which are exchangeable for shares of the Company’s common stock that have marketability restrictions. The estimated fair value of Z Units were determined on the grant date and considered the Company's stock price on the date of grant, the dividends that are not paid on unvested units and a marketability discount for the 8 to 15 years of illiquidity. Compensation expense is calculated by multiplying estimated vesting increases for the period by the estimated fair value as of the grant date. During 2011 and 2010, the Operating Partnership issued 154,500 Series Z-1 Incentive Units (the "Z-1 Units") of limited partner interest to executives of the Company. The Z-1 Units are convertible one-for-one into common units of the Operating Partnership (which, in turn, are convertible into common stock of the Company) upon the earlier to occur of 100 percent vesting of the units or the year 2026. The conversion ratchet (accounted for as vesting) of the Z-1 Units into common units, is to increase consistent with the Company’s annual FFO growth, but is not to be less than zero or greater than 14 percent . Z-1 Unitholders are entitled to receive distributions, on vested units, that are now equal to dividends distributed to common stockholders. Equity-based compensation costs for LTIP and Z Units under the fair value method totaled approximately $0.9 million , $0.8 million and $1.5 million for the years ended December 31, 2019 , 2018 and 2017 , respectively. Equity-based compensation costs related to LTIP Units attributable to recipients who are direct and incremental to these projects was capitalized to real estate under development and totaled approximately $0.2 million , $0.2 million , and $0.5 million , for the years ended December 31, 2019 , 2018 , and 2017 , respectively. The intrinsic value of the vested and unvested LTIP Units totaled $43.7 million as of December 31, 2019 . Total unrecognized compensation cost related to the unvested LTIP Units under the LTIP Units plans was zero as of December 31, 2019 . The following table summarizes information about the LTIP Units outstanding as of December 31, 2019 : Long-Term Incentive Plan - LTIP Units Total Vested Units Total Unvested Units Total Outstanding Units Weighted- average Grant-date Fair Value Weighted- average Remaining Contractual Life (years) Balance, December 31, 2016 181,027 60,027 241,054 $ 75.11 8.5 Granted — — — Vested 32,961 (32,961 ) — Converted (688 ) — (688 ) Cancelled — (3,854 ) (3,854 ) Balance, December 31, 2017 213,300 23,212 236,512 $ 75.03 7.5 Granted — — — Vested 12,051 (12,051 ) — Converted (91,270 ) — (91,270 ) Cancelled — — — Balance, December 31, 2018 134,081 11,161 145,242 $ 75.03 6.5 Granted — — — Vested 9,176 (9,176 ) — Converted — — — Cancelled — (95 ) (95 ) Balance, December 31, 2019 143,257 1,890 145,147 $ 75.03 5.2

Segment Information

Segment Information	12 Months Ended
Segment Information	Dec. 31, 2019
Segment Reporting [Abstract]
Segment Information	Segment Information The Company's segment disclosures present the measure used by the chief operating decision makers for purposes of assessing each segment's performance. The Company's chief operating decision makers are comprised of several members of its executive management team who use net operating income ("NOI") to assess the performance of the business for the Company's reportable operating segments. NOI represents total property revenues less direct property operating expenses. The executive management team generally evaluates the Company's operating performance geographically. The Company defines its reportable operating segments as the three geographical regions in which its communities are located: Southern California, Northern California and Seattle Metro. Excluded from segment revenues and NOI are management and other fees from affiliates and interest and other income. Non-segment revenues and NOI included in the following schedule also consist of revenues generated from commercial properties and properties that have been sold. Other non-segment assets include items such as real estate under development, co-investments, real estate held for sale, net, cash and cash equivalents, marketable securities, notes and other receivables, and prepaid expenses and other assets. The revenues and NOI for each of the reportable operating segments are summarized as follows for the years ended December 31, 2019 , 2018 , and 2017 ($ in thousands): Years Ended December 31, 2019 2018 2017 Revenues: Southern California $ 610,240 $ 592,281 $ 574,552 Northern California 569,556 522,561 505,313 Seattle Metro 245,476 236,525 229,871 Other real estate assets 25,356 39,503 44,589 Total property revenues $ 1,450,628 $ 1,390,870 $ 1,354,325 Net operating income: Southern California $ 434,267 $ 421,274 $ 407,771 Northern California 420,320 385,483 371,597 Seattle Metro 173,875 165,244 162,111 Other real estate assets 24,471 33,535 37,460 Total net operating income 1,052,933 1,005,536 978,939 Management and other fees from affiliates 9,527 9,183 9,574 Corporate-level property management expenses (32,899 ) (31,062 ) (30,156 ) Depreciation and amortization (483,750 ) (479,884 ) (468,881 ) General and administrative (54,262 ) (53,451 ) (41,385 ) Expensed acquisition and investment related costs (168 ) (194 ) (1,569 ) Impairment loss (7,105 ) — — Gain (loss) on sale of real estate and land (3,164 ) 61,861 26,423 Interest expense (217,339 ) (220,492 ) (222,894 ) Total return swap income 8,446 8,707 10,098 Interest and other income 46,298 23,010 24,604 Equity income from co-investments 112,136 89,132 86,445 Deferred tax expense on unrealized gain on unconsolidated co-investment (1,457 ) — — Gain (loss) on early retirement of debt, net 3,717 — (1,796 ) Gain on remeasurement of co-investment 31,535 1,253 88,641 Net income $ 464,448 $ 413,599 $ 458,043 Total assets for each of the reportable operating segments are summarized as follows as of December 31, 2019 and 2018 ($ in thousands): As of December 31, 2019 2018 Assets: Southern California $ 4,233,110 $ 4,368,882 Northern California 4,622,268 4,289,232 Seattle Metro 1,481,061 1,485,040 Other real estate assets 12,221 13,399 Net reportable operating segments - real estate assets 10,348,660 10,156,553 Real estate under development 546,075 454,629 Co-investments 1,335,339 1,300,140 Cash and cash equivalents, including restricted cash 81,094 151,395 Marketable securities 144,193 209,545 Notes and other receivables 134,365 71,895 Operating lease right-of-use assets 74,744 — Prepaid expenses and other assets 40,935 39,439 Total assets $ 12,705,405 $ 12,383,596

401(k) Plan

401(k) Plan	12 Months Ended
401(k) Plan	Dec. 31, 2019
Defined Contribution Plan [Abstract]
401(k) Plan	401(k) Plan The Company has a 401(k) benefit plan (the "Plan") for all eligible employees. Employee contributions are limited by the maximum allowed under Section 401(k) of the Internal Revenue Code. The Company matches 50% of the employee contributions up to a specified maximum. Company contributions to the Plan were approximately $2.4 million , $2.1 million , and $1.8 million for the years ended December 31, 2019 , 2018 , and 2017 , respectively.

Commitments and Contingencies

Commitments and Contingencies	12 Months Ended
Commitments and Contingencies	Dec. 31, 2019
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies The Company's total minimum lease payment commitments, under ground leases, parking leases, and operating leases are disclosed in Note 11, Lease Agreements - Company as Lessee. To the extent that an environmental matter arises or is identified in the future that has other than a remote risk of having a material impact on the financial statements, the Company will disclose the estimated range of possible outcomes associated with it and, if an outcome is probable, accrue an appropriate liability for that matter. The Company will consider whether any such matter results in an impairment of value on the affected property and, if so, the impairment will be recognized. The Company has no way of determining the magnitude of any potential liability to which it may be subject arising out of unknown environmental conditions with respect to the communities currently or formerly owned by the Company. No assurance can be given that: existing environmental assessments conducted with respect to any of these communities have revealed all environmental conditions or potential liabilities associated with such conditions; any prior owner or operator of a property did not create any material environmental condition not known to the Company; or a material unknown environmental condition does not otherwise exist as to any one or more of the communities. The Company has limited insurance coverage for some of the types of environmental conditions and associated liabilities described above. The Company has entered into transactions that may require the Company to pay the tax liabilities of the partners or members in the Operating Partnership or in the DownREIT entities. These transactions are within the Company’s control. Although the Company plans to hold the contributed assets or defer recognition of gain on their sale pursuant to like-kind exchange rules under Section 1031 of the Internal Revenue Code, the Company can provide no assurance that it will be able to do so and if such tax liabilities were incurred they may have a material impact on the Company’s financial position. There continue to be lawsuits against owners and managers of certain of the Company's apartment communities alleging personal injury and property damage caused by the presence of mold in the residential units and common areas of those communities. Some of these lawsuits have resulted in substantial monetary judgments or settlements. The Company has been sued for mold related matters and has settled some, but not all, of such suits. Insurance carriers have reacted to the increase in mold related liability awards by excluding mold related claims from standard general liability policies and pricing mold endorsements at prohibitively high rates. The Company has, however, purchased pollution liability insurance which includes coverage for some mold claims. The Company has also adopted policies intended to promptly address and resolve reports of mold and to minimize any impact mold might have on tenants of its properties. The Company believes its mold policies and proactive response to address reported mold exposures reduces its risk of loss from mold claims. While no assurances can be given that the Company has identified and responded to all mold occurrences, the Company promptly addresses and responds to all known mold reports. Liabilities resulting from such mold related matters are not expected to have a material adverse effect on the Company’s financial condition, results of operations or cash flows. As of December 31, 2019 , potential liabilities for mold and other environmental liabilities are not quantifiable and an estimate of possible loss cannot be made. The Company carries comprehensive liability, fire, extended coverage and rental loss insurance for each of the communities. There are, however, certain types of extraordinary losses, such as, for example, losses from terrorism or earthquakes, for which the Company has limited insurance coverage. Substantially all of the communities are located in areas that are subject to earthquake activity. The Company has established a wholly-owned insurance subsidiary, Pacific Western Insurance LLC ("PWI"). Through PWI, the Company is self-insured for earthquake related losses. Additionally, since January 2008, PWI has provided property and casualty insurance coverage for the first $5.0 million of the Company’s property level insurance claims per incident. As of December 31, 2019 , PWI has cash and marketable securities of approximately $78.4 million . These assets are consolidated in the Company’s financial statements. Beginning in 2013, the Company has obtained limited third party seismic insurance on selected assets in the Company's co-investments. The Company is subject to various other legal and/or regulatory proceedings arising in the course of its business operations. The Company believes that, with respect to such matters that it is currently a party to, the ultimate disposition of any such matter will not result in a material adverse effect on the Company’s financial condition, results of operations or cash flows.

Subsequent Events

Subsequent Events	12 Months Ended
Subsequent Events	Dec. 31, 2019
Subsequent Events [Abstract]
Subsequent Events	Subsequent Events In January 2020, the Company purchased CPPIB's 45.0% interest in a land parcel and six communities, totaling 2,020 apartment homes, valued at approximately $1.0 billion on a gross basis. In January 2020, the Company received $85.8 million for the payoff of a related party bridge loan to Wesco V. In February 2020, the Company issued $500.0 million of the 2032 Notes, with a coupon rate of 2.650% , which are payable on March 15 and September 15 of each year, beginning on September 15, 2020. The 2032 Notes were offered to investors at a price of 99.628% of par value. The 2032 Notes are general unsecured senior obligations of the Operating Partnership, rank equally in right of payment with all other senior unsecured indebtedness of the Operating Partnership and are unconditionally guaranteed by Essex Property Trust, Inc. The Company used the net proceeds of this offering to repay indebtedness under its unsecured lines of credit and for other general corporate purposes.

Quarterly Results of Operations

Quarterly Results of Operations (Unaudited)	12 Months Ended
Quarterly Results of Operations (Unaudited)	Dec. 31, 2019
Quarterly Financial Data [Abstract]
Quarterly Results of Operations (Unaudited)	Quarterly Results of Operations (Unaudited) Essex Property Trust, Inc. The following is a summary of quarterly results of operations for 2019 and 2018 ( $ in thousands, except per share and dividend amounts ): Quarter ended December 31 Quarter ended September 30 Quarter ended June 30 Quarter ended March 31 2019: Total property revenues $ 372,861 $ 364,504 $ 359,375 $ 353,888 Net income $ 135,182 $ 105,700 $ 98,061 $ 125,505 Net income available to common stockholders $ 128,818 $ 99,335 $ 92,275 $ 118,858 Per share data: Net income: Basic (1) $ 1.95 $ 1.51 $ 1.40 $ 1.81 Diluted (1) $ 1.95 $ 1.51 $ 1.40 $ 1.81 Dividends declared $ 1.95 $ 1.95 $ 1.95 $ 1.95 2018: Total property revenues $ 350,787 $ 348,610 $ 346,526 $ 344,947 Net income $ 124,440 $ 86,110 $ 106,410 $ 96,639 Net income available to common stockholders $ 117,820 $ 80,975 $ 100,440 $ 90,918 Per share data: Net income: Basic (1) $ 1.78 $ 1.23 $ 1.52 $ 1.38 Diluted (1) $ 1.78 $ 1.22 $ 1.52 $ 1.38 Dividends declared $ 1.86 $ 1.86 $ 1.86 $ 1.86 (1) Quarterly earnings per common share amounts may not total to the annual amounts due to rounding and the changes in the number of weighted common shares outstanding and included in the calculation of basic and diluted shares. Essex Portfolio, L.P. The following is a summary of quarterly results of operations for 2019 and 2018 ( $ in thousands, except per unit and distribution amounts ): Quarter ended December 31 Quarter ended September 30 Quarter ended June 30 Quarter ended March 31 2019: Total property revenues $ 372,861 $ 364,504 $ 359,375 $ 353,888 Net income $ 135,182 $ 105,700 $ 98,061 $ 125,505 Net income available to common unitholders $ 133,298 $ 102,799 $ 95,503 $ 123,029 Per unit data: Net income: Basic (1) $ 1.95 $ 1.51 $ 1.40 $ 1.81 Diluted (1) $ 1.95 $ 1.51 $ 1.40 $ 1.81 Distributions declared $ 1.95 $ 1.95 $ 1.95 $ 1.95 2018: Total property revenues $ 350,787 $ 348,610 $ 346,526 $ 344,947 Net income $ 124,440 $ 86,110 $ 106,410 $ 96,639 Net income available to common unitholders $ 121,891 $ 83,764 $ 103,900 $ 94,050 Per unit data: Net income: Basic (1) $ 1.78 $ 1.23 $ 1.52 $ 1.38 Diluted (1) $ 1.78 $ 1.23 $ 1.52 $ 1.38 Distributions declared $ 1.86 $ 1.86 $ 1.86 $ 1.86 (1) Quarterly earnings per common unit amounts may not total to the annual amounts due to rounding and the changes in the number of weighted common units outstanding and included in the calculation of basic and diluted units.

SCHEDULE III REAL ESTATE AND AC

SCHEDULE III REAL ESTATE AND ACCUMULATED DEPRECIATION	12 Months Ended
SCHEDULE III REAL ESTATE AND ACCUMULATED DEPRECIATION	Dec. 31, 2019
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation Disclosure [Abstract]
SCHEDULE III - REAL ESTATE AND ACCUMULATED DEPRECIATION	Costs Initial cost capitalized Gross amount carried at close of period Apartment Buildings and subsequent to Land and Buildings and Accumulated Date of Date Lives Property Homes Location Encumbrance Land improvements acquisition improvements improvements Total (1) depreciation construction acquired (years) Encumbered communities Belmont Station 275 Los Angeles, CA 29,703 8,100 66,666 6,642 8,267 73,141 81,408 (31,302 ) 2009 Mar-09 3-30 Brio 300 Walnut Creek, CA 101,540 16,885 151,741 704 16,885 152,445 169,330 (2,972 ) 2015 Jun-19 3-30 Brookside Oaks 170 Sunnyvale, CA 17,318 7,301 16,310 27,158 10,328 40,441 50,769 (24,680 ) 1973 Jun-00 3-30 City View 572 Hayward, CA 60,841 9,883 37,670 31,487 10,350 68,690 79,040 (50,256 ) 1975 Mar-98 3-30 Domaine 92 Seattle, WA 12,845 9,059 27,177 1,296 9,059 28,473 37,532 (7,309 ) 2009 Sep-12 3-30 Fairhaven Apartments 164 Santa Ana, CA 17,602 2,626 10,485 9,757 2,957 19,911 22,868 (12,157 ) 1970 Nov-01 3-30 Form 15 242 San Diego, CA 43,616 24,510 72,221 8,167 25,540 79,358 104,898 (10,490 ) 2014 Mar-16 3-30 Fountain Park 705 Playa Vista, CA 82,639 25,073 94,980 34,339 25,203 129,189 154,392 (74,993 ) 2002 Feb-04 3-30 Hidden Valley 324 Simi Valley, CA 29,392 14,174 34,065 7,501 9,674 46,066 55,740 (22,843 ) 2004 Dec-04 3-30 Highridge 255 Rancho Palos Verdes, CA 69,309 5,419 18,347 32,286 6,073 49,979 56,052 (39,463 ) 1972 May-97 3-30 1000 Kiely 121 Santa Clara, CA 33,260 9,359 21,845 8,294 9,359 30,139 39,498 (12,313 ) 1971 Mar-11 3-30 Magnolia Square/Magnolia (2) 188 Sunnyvale, CA 52,270 8,190 24,736 18,388 8,191 43,123 51,314 (23,557 ) 1963 Sep-07 3-30 Marquis 166 San Jose, CA 43,772 20,495 47,823 46 20,495 47,869 68,364 (1,664 ) 2015 Dec-18 3-30 Montanosa 472 San Diego, CA 59,723 26,697 106,787 6,299 26,697 113,086 139,783 (24,590 ) 1990 Apr-14 5-30 Montebello 248 Kirkland, WA 23,682 13,857 41,575 5,542 13,858 47,116 60,974 (13,781 ) 1996 Jul-12 3-30 Montejo Apartments 124 Garden Grove, CA 12,536 1,925 7,685 4,365 2,194 11,781 13,975 (7,013 ) 1974 Nov-01 3-30 Sage at Cupertino 230 San Jose, CA 51,724 35,719 53,449 6,442 35,719 59,891 95,610 (6,349 ) 1971 Mar-17 3-30 The Barkley (3) 161 Anaheim, CA 14,857 — 8,520 7,440 2,353 13,607 15,960 (9,240 ) 1984 Apr-00 3-30 The Dylan 184 West Hollywood, CA 58,854 19,984 82,286 1,202 19,990 83,482 103,472 (15,578 ) 2015 Mar-15 3-30 The Huxley 187 West Hollywood, CA 53,589 19,362 75,641 1,385 19,371 77,017 96,388 (14,609 ) 2014 Mar-15 3-30 The Waterford 238 San Jose, CA 28,713 11,808 24,500 17,347 15,165 38,490 53,655 (23,732 ) 2000 Jun-00 3-30 Township 132 Redwood City, CA 46,087 19,812 70,619 251 19,812 70,870 90,682 (713 ) 2014 Sep-19 3-30 Valley Park 160 Fountain Valley, CA 20,327 3,361 13,420 6,186 3,761 19,206 22,967 (11,634 ) 1969 Nov-01 3-30 Villa Angelina 256 Placentia, CA 26,468 4,498 17,962 7,744 4,962 25,242 30,204 (15,684 ) 1970 Nov-01 3-30 5,966 $ 990,667 $ 318,097 $ 1,126,510 $ 250,268 $ 326,263 $ 1,368,612 $ 1,694,875 $ (456,922 ) Unencumbered Communities Alessio 624 Los Angeles, CA — 32,136 128,543 12,865 32,136 141,408 173,544 (31,530 ) 2001 Apr-14 5-30 Allegro 97 Valley Village, CA — 5,869 23,977 2,530 5,869 26,507 32,376 (10,365 ) 2010 Oct-10 3-30 Allure at Scripps Ranch 194 San Diego, CA — 11,923 47,690 1,653 11,923 49,343 61,266 (10,557 ) 2002 Apr-14 5-30 Costs Initial cost capitalized Gross amount carried at close of period Apartment Buildings and subsequent to Land and Buildings and Accumulated Date of Date Lives Property Homes Location Encumbrance Land improvements acquisition improvements improvements Total (1) depreciation construction acquired (years) Alpine Village 301 Alpine, CA — 4,967 19,728 9,094 4,982 28,807 33,789 (16,958 ) 1971 Dec-02 3-30 Anavia 250 Anaheim, CA — 15,925 63,712 8,796 15,925 72,508 88,433 (22,599 ) 2009 Dec-10 3-30 Annaliese 56 Seattle, WA — 4,727 14,229 701 4,726 14,931 19,657 (3,613 ) 2009 Jan-13 3-30 Apex 366 Milpitas, CA — 44,240 103,251 3,857 44,240 107,108 151,348 (19,343 ) 2014 Aug-14 3-30 Aqua Marina Del Rey 500 Marina Del Rey, CA — 58,442 175,326 14,430 58,442 189,756 248,198 (44,329 ) 2001 Apr-14 5-30 Ascent 90 Kirkland, WA — 3,924 11,862 2,172 3,924 14,034 17,958 (4,169 ) 1988 Oct-12 3-30 Ashton Sherman Village 264 Los Angeles, CA — 23,550 93,811 976 23,550 94,787 118,337 (10,157 ) 2014 Dec-16 3-30 Avant 440 Los Angeles, CA — 32,379 137,940 3,203 32,379 141,143 173,522 (21,614 ) 2014 Jun-15 3-30 Avenue 64 224 Emeryville, CA — 27,235 64,403 14,656 27,235 79,059 106,294 (15,897 ) 2007 Apr-14 5-30 Aviara (4) 166 Mercer Island, WA — — 49,813 1,412 — 51,225 51,225 (11,908 ) 2013 Apr-14 5-30 Avondale at Warner Center 446 Woodland Hills, CA — 10,536 24,522 24,703 10,601 49,160 59,761 (34,453 ) 1970 Jan-99 3-30 Axis 2300 115 Irvine, CA — 5,405 33,585 1,963 5,405 35,548 40,953 (13,576 ) 2010 Aug-10 3-30 Bel Air 462 San Ramon, CA — 12,105 18,252 40,856 12,682 58,531 71,213 (40,414 ) 1988 Jan-95 3-30 Belcarra 296 Bellevue, WA — 21,725 92,091 2,283 21,725 94,374 116,099 (19,774 ) 2009 Apr-14 5-30 Bella Villagio 231 San Jose, CA — 17,247 40,343 4,001 17,247 44,344 61,591 (14,888 ) 2004 Sep-10 3-30 BellCentre 248 Bellevue, WA — 16,197 67,207 5,041 16,197 72,248 88,445 (15,892 ) 2001 Apr-14 5-30 Bellerive 63 Los Angeles, CA — 5,401 21,803 1,312 5,401 23,115 28,516 (7,768 ) 2011 Aug-11 3-30 Belmont Terrace 71 Belmont, CA — 4,446 10,290 7,294 4,473 17,557 22,030 (9,414 ) 1974 Oct-06 3-30 Bennett Lofts 165 San Francisco, CA — 21,771 50,800 30,544 28,371 74,744 103,115 (19,437 ) 2004 Dec-12 3-30 Bernardo Crest 216 San Diego, CA — 10,802 43,209 4,737 10,802 47,946 58,748 (10,574 ) 1988 Apr-14 5-30 Bonita Cedars 120 Bonita, CA — 2,496 9,913 5,583 2,503 15,489 17,992 (8,551 ) 1983 Dec-02 3-30 Boulevard 172 Fremont, CA — 3,520 8,182 14,248 3,580 22,370 25,950 (17,944 ) 1978 Jan-96 3-30 Bridle Trails 108 Kirkland, WA — 1,500 5,930 6,614 1,531 12,513 14,044 (8,949 ) 1986 Oct-97 3-30 Brighton Ridge 264 Renton, WA — 2,623 10,800 6,174 2,656 16,941 19,597 (12,601 ) 1986 Dec-96 3-30 Bristol Commons 188 Sunnyvale, CA — 5,278 11,853 10,206 5,293 22,044 27,337 (15,631 ) 1989 Jan-95 3-30 416 on Broadway 115 Glendale, CA — 8,557 34,235 3,407 8,557 37,642 46,199 (12,466 ) 2009 Dec-10 3-30 Bunker Hill 456 Los Angeles, CA — 11,498 27,871 91,959 11,639 119,689 131,328 (67,010 ) 1968 Mar-98 3-30 Camarillo Oaks 564 Camarillo, CA — 10,953 25,254 8,562 11,075 33,694 44,769 (25,023 ) 1985 Jul-96 3-30 Cambridge Park 320 San Diego, CA — 18,185 72,739 3,642 18,185 76,381 94,566 (16,732 ) 1998 Apr-14 5-30 Camino Ruiz Square 159 Camarillo, CA — 6,871 26,119 2,349 6,931 28,408 35,339 (12,693 ) 1990 Dec-06 3-30 Canyon Oaks 250 San Ramon, CA — 19,088 44,473 4,988 19,088 49,461 68,549 (21,478 ) 2005 May-07 3-30 Canyon Pointe 250 Bothell, WA — 4,692 18,288 9,096 4,693 27,383 32,076 (15,931 ) 1990 Oct-03 3-30 Costs Initial cost capitalized Gross amount carried at close of period Apartment Buildings and subsequent to Land and Buildings and Accumulated Date of Date Lives Property Homes Location Encumbrance Land improvements acquisition improvements improvements Total (1) depreciation construction acquired (years) Capri at Sunny Hills 102 Fullerton, CA — 3,337 13,320 9,503 4,048 22,112 26,160 (14,445 ) 1961 Sep-01 3-30 Carmel Creek 348 San Diego, CA — 26,842 107,368 6,878 26,842 114,246 141,088 (25,679 ) 2000 Apr-14 5-30 Carmel Landing 356 San Diego, CA — 16,725 66,901 9,043 16,725 75,944 92,669 (16,943 ) 1989 Apr-14 5-30 Carmel Summit 246 San Diego, CA — 14,968 59,871 4,154 14,968 64,025 78,993 (13,876 ) 1989 Apr-14 5-30 Castle Creek 216 Newcastle, WA — 4,149 16,028 5,185 4,833 20,529 25,362 (14,880 ) 1998 Dec-98 3-30 Catalina Gardens 128 Los Angeles, CA — 6,714 26,856 1,970 6,714 28,826 35,540 (6,159 ) 1987 Apr-14 5-30 CBC Apartments & The Sweeps 239 Goleta, CA — 11,841 45,320 6,718 11,906 51,973 63,879 (26,615 ) 1962 Jan-06 3-30 Cedar Terrace 180 Bellevue, WA — 5,543 16,442 8,092 5,652 24,425 30,077 (12,765 ) 1984 Jan-05 3-30 CentrePointe 224 San Diego, CA — 3,405 7,743 21,698 3,442 29,404 32,846 (20,349 ) 1974 Jun-97 3-30 Chestnut Street Apartments 96 Santa Cruz, CA — 6,582 15,689 2,057 6,582 17,746 24,328 (7,206 ) 2002 Jul-08 3-30 Collins on Pine 76 Seattle, WA — 7,276 22,226 562 7,276 22,788 30,064 (4,337 ) 2013 May-14 3-30 Corbella at Juanita Bay 169 Kirkland, WA — 5,801 17,415 3,815 5,801 21,230 27,031 (7,273 ) 1978 Nov-10 3-30 Cortesia 308 Rancho Santa Margarita, CA — 13,912 55,649 3,034 13,912 58,683 72,595 (12,706 ) 1999 Apr-14 5-30 Country Villas 180 Oceanside, CA — 4,174 16,583 5,358 4,187 21,928 26,115 (12,942 ) 1976 Dec-02 3-30 Courtyard off Main 110 Bellevue, WA — 7,465 21,405 4,911 7,465 26,316 33,781 (8,924 ) 2000 Oct-10 3-30 Crow Canyon 400 San Ramon, CA — 37,579 87,685 11,695 37,579 99,380 136,959 (22,121 ) 1992 Apr-14 5-30 Deer Valley 171 San Rafael, CA — 21,478 50,116 3,175 21,478 53,291 74,769 (11,659 ) 1996 Apr-14 5-30 Delano 126 Redmond, WA — 7,470 22,511 1,655 7,470 24,166 31,636 (6,762 ) 2005 Dec-11 3-30 Devonshire 276 Hemet, CA — 3,470 13,786 5,988 3,482 19,762 23,244 (11,177 ) 1988 Dec-02 3-30 Elevation 158 Redmond, WA — 4,758 14,285 7,182 4,757 21,468 26,225 (9,807 ) 1986 Jun-10 3-30 Ellington 220 Bellevue, WA — 15,066 45,249 3,914 15,066 49,163 64,229 (9,897 ) 1994 Jul-14 3-30 Emerald Pointe 160 Diamond Bar, CA — 8,458 33,832 2,098 8,458 35,930 44,388 (7,907 ) 1989 Apr-14 5-30 Emerald Ridge 180 Bellevue, WA — 3,449 7,801 6,444 3,449 14,245 17,694 (10,963 ) 1987 Nov-94 3-30 Emerson Valley Village 144 Los Angeles, CA — 13,378 53,240 979 13,378 54,219 67,597 (5,806 ) 2012 Dec-16 3-30 Enso 183 San Jose, CA — 21,397 71,135 1,630 21,397 72,765 94,162 (10,555 ) 2014 Dec-15 3-30 Esplanade 278 San Jose, CA — 18,170 40,086 15,809 18,429 55,636 74,065 (29,746 ) 2002 Apr-04 3-30 Essex Skyline 349 Santa Ana, CA — 21,537 146,099 10,028 21,537 156,127 177,664 (41,718 ) 2008 Apr-10 3-30 Evergreen Heights 200 Kirkland, WA — 3,566 13,395 6,886 3,649 20,198 23,847 (14,843 ) 1990 Jun-97 3-30 Fairway Apartments at Big Canyon (5) 74 Newport Beach, CA — — 7,850 8,180 — 16,030 16,030 (11,744 ) 1972 Jun-99 3-28 Fairwood Pond 194 Renton, WA — 5,296 15,564 4,408 5,297 19,971 25,268 (10,643 ) 1997 Oct-04 3-30 Foothill Commons 394 Bellevue, WA — 2,435 9,821 41,492 2,440 51,308 53,748 (45,513 ) 1978 Mar-90 3-30 Costs Initial cost capitalized Gross amount carried at close of period Apartment Buildings and subsequent to Land and Buildings and Accumulated Date of Date Lives Property Homes Location Encumbrance Land improvements acquisition improvements improvements Total (1) depreciation construction acquired (years) Foothill Gardens/Twin Creeks 176 San Ramon, CA — 5,875 13,992 11,404 5,964 25,307 31,271 (18,366 ) 1985 Feb-97 3-30 Forest View 192 Renton, WA — 3,731 14,530 3,095 3,731 17,625 21,356 (9,840 ) 1998 Oct-03 3-30 Foster's Landing 490 Foster City, CA — 61,714 144,000 10,178 61,714 154,178 215,892 (35,111 ) 1987 Apr-14 5-30 Fountain Court 320 Seattle, WA — 6,702 27,306 13,162 6,985 40,185 47,170 (28,006 ) 2000 Mar-00 3-30 Fountains at River Oaks 226 San Jose, CA — 26,046 60,773 5,104 26,046 65,877 91,923 (14,742 ) 1990 Apr-14 3-30 Fourth & U 171 Berkeley, CA — 8,879 52,351 3,967 8,879 56,318 65,197 (19,549 ) 2010 Apr-10 3-30 Fox Plaza 445 San Francisco, CA — 39,731 92,706 35,532 39,731 128,238 167,969 (34,285 ) 1968 Feb-13 3-30 The Henley I/The Henley II 215 Glendale, CA — 6,695 16,753 27,953 6,733 44,668 51,401 (26,394 ) 1970 Jun-99 3-30 Highlands at Wynhaven 333 Issaquah, WA — 16,271 48,932 14,851 16,271 63,783 80,054 (27,806 ) 2000 Aug-08 3-30 Hillcrest Park 608 Newbury Park, CA — 15,318 40,601 21,179 15,755 61,343 77,098 (42,560 ) 1973 Mar-98 3-30 Hillsdale Garden 697 San Mateo, CA — 22,000 94,681 28,988 22,000 123,669 145,669 (58,877 ) 1948 Sep-06 3-30 Hope Ranch 108 Santa Barbara, CA — 4,078 16,877 2,989 4,208 19,736 23,944 (8,757 ) 1965 Mar-07 3-30 Huntington Breakers 342 Huntington Beach, CA — 9,306 22,720 21,487 9,315 44,198 53,513 (32,546 ) 1984 Oct-97 3-30 Inglenook Court 224 Bothell, WA — 3,467 7,881 8,307 3,474 16,181 19,655 (13,291 ) 1985 Oct-94 3-30 Lafayette Highlands 150 Lafayette, CA — 17,774 41,473 3,526 17,774 44,999 62,773 (9,732 ) 1973 Apr-14 5-30 Lakeshore Landing 308 San Mateo, CA — 38,155 89,028 8,183 38,155 97,211 135,366 (22,592 ) 1988 Apr-14 5-30 Laurels at Mill Creek 164 Mill Creek, WA — 1,559 6,430 8,202 1,595 14,596 16,191 (10,517 ) 1981 Dec-96 3-30 Lawrence Station 336 Sunnyvale, CA — 45,532 106,735 2,006 45,532 108,741 154,273 (27,218 ) 2012 Apr-14 5-30 Le Parc 140 Santa Clara, CA — 3,090 7,421 13,782 3,092 21,201 24,293 (16,474 ) 1975 Feb-94 3-30 Marbrisa 202 Long Beach, CA — 4,700 18,605 9,755 4,760 28,300 33,060 (17,214 ) 1987 Sep-02 3-30 Marina City Club (6) 101 Marina Del Rey, CA — — 28,167 31,783 — 59,950 59,950 (28,367 ) 1971 Jan-04 3-30 Marina Cove (7) 292 Santa Clara, CA — 5,320 16,431 15,948 5,324 32,375 37,699 (26,197 ) 1974 Jun-94 3-30 Mariner's Place 105 Oxnard, CA — 1,555 6,103 2,589 1,562 8,685 10,247 (6,020 ) 1987 May-00 3-30 MB 360 360 San Francisco, CA — 42,001 212,648 11,373 42,001 224,021 266,022 (41,021 ) 2014 Apr-14 3-30 Mesa Village 133 Clairemont, CA — 1,888 7,498 2,591 1,894 10,083 11,977 (5,624 ) 1963 Dec-02 3-30 Mill Creek at Windermere 400 San Ramon, CA — 29,551 69,032 6,201 29,551 75,233 104,784 (31,986 ) 2005 Sep-07 3-30 Mio 103 San Jose, CA — 11,012 39,982 557 11,012 40,539 51,551 (5,695 ) 2015 Jan-16 3-30 Mirabella 188 Marina Del Rey, CA — 6,180 26,673 16,790 6,270 43,373 49,643 (26,253 ) 2000 May-00 3-30 Mira Monte 354 Mira Mesa, CA — 7,165 28,459 11,933 7,186 40,371 47,557 (25,280 ) 1982 Dec-02 3-30 Miracle Mile/Marbella 236 Los Angeles, CA — 7,791 23,075 15,151 7,886 38,131 46,017 (27,856 ) 1988 Aug-97 3-30 Mission Hills 282 Oceanside, CA — 10,099 38,778 11,134 10,167 49,844 60,011 (24,458 ) 1984 Jul-05 3-30 Mission Peaks 453 Fremont, CA — 46,499 108,498 7,387 46,499 115,885 162,384 (25,036 ) 1995 Apr-14 5-30 Costs Initial cost capitalized Gross amount carried at close of period Apartment Buildings and subsequent to Land and Buildings and Accumulated Date of Date Lives Property Homes Location Encumbrance Land improvements acquisition improvements improvements Total (1) depreciation construction acquired (years) Mission Peaks II 336 Fremont, CA — 31,429 73,334 7,308 31,429 80,642 112,071 (17,908 ) 1989 Apr-14 5-30 Montclaire 390 Sunnyvale, CA — 4,842 19,776 28,185 4,997 47,806 52,803 (41,752 ) 1973 Dec-88 3-30 Monterey Villas 122 Oxnard, CA — 2,349 5,579 6,873 2,424 12,377 14,801 (8,553 ) 1974 Jul-97 3-30 Muse 152 North Hollywood, CA — 7,822 33,436 3,466 7,823 36,901 44,724 (13,932 ) 2011 Feb-11 3-30 Museum Park 117 San Jose, CA — 13,864 32,348 2,012 13,864 34,360 48,224 (7,530 ) 2002 Apr-14 5-30 One South Market 312 San Jose, CA — 28,290 148,649 162 28,290 148,811 177,101 (3,931 ) 2015 Mar-19 3-30 Palm Valley 1,099 San Jose, CA — 133,802 312,205 15,296 133,802 327,501 461,303 (35,244 ) 2008 Jan-17 3-30 Paragon Apartments 301 Fremont, CA — 32,230 77,320 2,173 32,230 79,493 111,723 (14,796 ) 2013 Jul-14 3-30 Park Catalina 90 Los Angeles, CA — 4,710 18,839 3,372 4,710 22,211 26,921 (7,029 ) 2002 Jun-12 3-30 Park Highland 250 Bellevue, WA — 9,391 38,224 12,981 9,391 51,205 60,596 (13,942 ) 1993 Apr-14 5-30 Park Hill at Issaquah 245 Issaquah, WA — 7,284 21,937 10,119 7,284 32,056 39,340 (16,614 ) 1999 Feb-99 3-30 Park Viridian 320 Anaheim, CA — 15,894 63,574 3,789 15,894 67,363 83,257 (14,776 ) 2008 Apr-14 5-30 Park West 126 San Francisco, CA — 9,424 21,988 12,500 9,424 34,488 43,912 (11,971 ) 1958 Sep-12 3-30 Parkwood at Mill Creek 240 Mill Creek, WA — 10,680 42,722 3,376 10,680 46,098 56,778 (10,263 ) 1989 Apr-14 5-30 Patent 523 295 Seattle, WA — 14,558 69,417 5,923 14,558 75,340 89,898 (26,798 ) 2010 Mar-10 3-30 Pathways at Bixby Village 296 Long Beach, CA — 4,083 16,757 21,850 6,239 36,451 42,690 (31,839 ) 1975 Feb-91 3-30 Piedmont 396 Bellevue, WA — 19,848 59,606 12,913 19,848 72,519 92,367 (16,747 ) 1969 May-14 3-30 Pinehurst (8) 28 Ventura, CA — — 1,711 731 — 2,442 2,442 (1,517 ) 1973 Dec-04 3-24 Pinnacle at Fullerton 192 Fullerton, CA — 11,019 45,932 3,983 11,019 49,915 60,934 (11,134 ) 2004 Apr-14 5-30 Pinnacle on Lake Washington 180 Renton, WA — 7,760 31,041 3,513 7,760 34,554 42,314 (7,545 ) 2001 Apr-14 5-30 Pinnacle at MacArthur Place 253 Santa Ana, CA — 15,810 66,401 5,238 15,810 71,639 87,449 (15,689 ) 2002 Apr-14 5-30 Pinnacle at Otay Ranch I & II 364 Chula Vista, CA — 17,023 68,093 4,227 17,023 72,320 89,343 (15,862 ) 2001 Apr-14 5-30 Pinnacle at Talega 362 San Clemente, CA — 19,292 77,168 3,097 19,292 80,265 99,557 (17,314 ) 2002 Apr-14 5-30 Pinnacle Sonata 268 Bothell, WA — 14,647 58,586 4,597 14,647 63,183 77,830 (13,613 ) 2000 Apr-14 5-30 Pointe at Cupertino 116 Cupertino, CA — 4,505 17,605 12,637 4,505 30,242 34,747 (19,206 ) 1963 Aug-98 3-30 Pure Redmond 105 Redmond, WA — 7,461 31,363 — 7,461 31,363 38,824 (46 ) 2016 Dec-19 3-30 Radius 264 Redwood City, CA — 11,702 152,336 904 11,702 153,240 164,942 (33,929 ) 2015 Apr-14 3-30 Reed Square 100 Sunnyvale, CA — 6,873 16,037 8,451 6,873 24,488 31,361 (10,156 ) 1970 Jan-12 3-30 Regency at Encino 75 Encino, CA — 3,184 12,737 3,911 3,184 16,648 19,832 (6,945 ) 1989 Dec-09 3-30 Renaissance at Uptown Orange 460 Orange, CA — 27,870 111,482 6,212 27,870 117,694 145,564 (25,469 ) 2007 Apr-14 5-30 Reveal 438 Woodland Hills, CA — 25,073 121,314 2,446 25,073 123,760 148,833 (22,720 ) 2010 Apr-15 3-30 Salmon Run at Perry Creek 132 Bothell, WA — 3,717 11,483 2,941 3,801 14,340 18,141 (8,857 ) 2000 Oct-00 3-30 Costs Initial cost capitalized Gross amount carried at close of period Apartment Buildings and subsequent to Land and Buildings and Accumulated Date of Date Lives Property Homes Location Encumbrance Land improvements acquisition improvements improvements Total (1) depreciation construction acquired (years) Sammamish View 153 Bellevue, WA — 3,324 7,501 7,285 3,331 14,779 18,110 (12,571 ) 1986 Nov-94 3-30 101 San Fernando 323 San Jose, CA — 4,173 58,961 13,374 4,173 72,335 76,508 (26,862 ) 2001 Jul-10 3-30 San Marcos 432 Richmond, CA — 15,563 36,204 33,430 22,866 62,331 85,197 (33,909 ) 2003 Nov-03 3-30 Santee Court/Santee Village 238 Los Angeles, CA — 9,581 40,317 11,607 9,582 51,923 61,505 (17,070 ) 2004 Oct-10 3-30 Shadow Point 172 Spring Valley, CA — 2,812 11,170 4,305 2,820 15,467 18,287 (8,864 ) 1983 Dec-02 3-30 Shadowbrook 418 Redmond, WA — 19,292 77,168 5,704 19,292 82,872 102,164 (18,117 ) 1986 Apr-14 5-30 Slater 116 108 Kirkland, WA — 7,379 22,138 1,194 7,379 23,332 30,711 (5,181 ) 2013 Sep-13 3-30 Solstice 280 Sunnyvale, CA — 34,444 147,262 6,544 34,444 153,806 188,250 (36,993 ) 2014 Apr-14 5-30 Station Park Green - Phase I 121 San Mateo, CA — 14,923 96,229 5,610 14,924 101,838 116,762 (8,241 ) 2018 Mar-18 3-30 Stevenson Place 200 Fremont, CA — 996 5,582 13,651 1,001 19,228 20,229 (14,432 ) 1975 Apr-00 3-30 Stonehedge Village 196 Bothell, WA — 3,167 12,603 8,669 3,201 21,238 24,439 (14,829 ) 1986 Oct-97 3-30 Summerhill Park 100 Sunnyvale, CA — 2,654 4,918 11,180 2,656 16,096 18,752 (11,728 ) 1988 Sep-88 3-30 Summit Park 300 San Diego, CA — 5,959 23,670 8,485 5,977 32,137 38,114 (18,375 ) 1972 Dec-02 3-30 Taylor 28 197 Seattle, WA — 13,915 57,700 3,391 13,915 61,091 75,006 (13,005 ) 2008 Apr-14 5-30 The Audrey at Belltown 137 Seattle, WA — 9,228 36,911 1,290 9,228 38,201 47,429 (8,013 ) 1992 Apr-14 5-30 The Avery 121 Los Angeles, CA — 6,964 29,922 726 6,964 30,648 37,612 (5,957 ) 2014 Mar-14 3-30 The Bernard 63 Seattle, WA — 3,699 11,345 800 3,689 12,155 15,844 (3,574 ) 2008 Sep-11 3-30 The Blake LA 196 Los Angeles, CA — 4,023 9,527 22,158 4,031 31,677 35,708 (18,135 ) 1979 Jun-97 3-30 The Cairns 99 Seattle, WA — 6,937 20,679 2,389 6,939 23,066 30,005 (9,915 ) 2006 Jun-07 3-30 The Commons 264 Campbell, CA — 12,555 29,307 9,206 12,556 38,512 51,068 (14,792 ) 1973 Jul-10 3-30 The Elliot at Mukilteo 301 Mukilteo, WA — 2,498 10,595 17,699 2,824 27,968 30,792 (21,381 ) 1981 Jan-97 3-30 The Grand 243 Oakland, CA — 4,531 89,208 7,334 4,531 96,542 101,073 (37,589 ) 2009 Jan-09 3-30 The Hallie 292 Pasadena, CA — 2,202 4,794 54,674 8,385 53,285 61,670 (35,599 ) 1972 Apr-97 3-30 The Huntington 276 Huntington Beach, CA — 10,374 41,495 5,741 10,374 47,236 57,610 (13,725 ) 1975 Jun-12 3-30 The Landing at Jack London Square 282 Oakland, CA — 33,554 78,292 6,329 33,554 84,621 118,175 (19,726 ) 2001 Apr-14 5-30 The Lofts at Pinehurst 118 Ventura, CA — 1,570 3,912 5,499 1,618 9,363 10,981 (6,164 ) 1971 Jun-97 3-30 The Palisades 192 Bellevue, WA — 1,560 6,242 13,743 1,565 19,980 21,545 (17,648 ) 1977 May-90 3-30 The Palms at Laguna Niguel 460 Laguna Niguel, CA — 23,584 94,334 9,442 23,584 103,776 127,360 (23,149 ) 1988 Apr-14 5-30 The Stuart 188 Pasadena, CA — 13,574 54,298 2,693 13,574 56,991 70,565 (12,753 ) 2007 Apr-14 5-30 The Trails of Redmond 423 Redmond, WA — 21,930 87,720 5,406 21,930 93,126 115,056 (20,366 ) 1985 Apr-14 5-30 Tierra Vista 404 Oxnard, CA — 13,652 53,336 6,023 13,661 59,350 73,011 (32,123 ) 2001 Jan-01 3-30 Costs Initial cost capitalized Gross amount carried at close of period Apartment Buildings and subsequent to Land and Buildings and Accumulated Date of Date Lives Property Homes Location Encumbrance Land improvements acquisition improvements improvements Total (1) depreciation construction acquired (years) Tiffany Court 101 Los Angeles, CA — 6,949 27,796 1,857 6,949 29,653 36,602 (6,429 ) 1987 Apr-14 5-30 Trabuco Villas 132 Lake Forest, CA — 3,638 8,640 4,061 3,890 12,449 16,339 (8,740 ) 1985 Oct-97 3-30 Via 284 Sunnyvale, CA — 22,000 82,270 3,189 22,016 85,443 107,459 (27,803 ) 2011 Jul-11 3-30 Villa Granada 270 Santa Clara, CA — 38,299 89,365 2,200 38,299 91,565 129,864 (19,559 ) 2010 Apr-14 5-30 Villa Siena 272 Costa Mesa, CA — 13,842 55,367 8,399 13,842 63,766 77,608 (14,671 ) 1974 Apr-14 5-30 Village Green 272 La Habra, CA — 6,488 36,768 4,061 6,488 40,829 47,317 (9,428 ) 1971 Apr-14 5-30 Vista Belvedere 76 Tiburon, CA — 5,573 11,901 8,844 5,573 20,745 26,318 (12,068 ) 1963 Aug-04 3-30 Vox Apartments 58 Seattle, WA — 5,545 16,635 408 5,545 17,043 22,588 (3,543 ) 2013 Oct-13 3-30 Walnut Heights 163 Walnut, CA — 4,858 19,168 5,645 4,887 24,784 29,671 (13,726 ) 1964 Oct-03 3-30 Wandering Creek 156 Kent, WA — 1,285 4,980 5,152 1,296 10,121 11,417 (7,945 ) 1986 Nov-95 3-30 Wharfside Pointe 155 Seattle, WA — 2,245 7,020 12,465 2,258 19,472 21,730 (14,892 ) 1990 Jun-94 3-30 Willow Lake 508 San Jose, CA — 43,194 101,030 15,998 43,194 117,028 160,222 (32,271 ) 1989 Oct-12 3-30 5600 Wilshire 284 Los Angeles, CA — 30,535 91,604 4,495 30,535 96,099 126,634 (20,175 ) 2008 Apr-14 5-30 Wilshire La Brea 478 Los Angeles, CA — 56,932 211,998 11,252 56,932 223,250 280,182 (52,822 ) 2014 Apr-14 5-30 Wilshire Promenade 149 Fullerton, CA — 3,118 7,385 10,727 3,797 17,433 21,230 (11,640 ) 1992 Jan-97 3-30 Windsor Ridge 216 Sunnyvale, CA — 4,017 10,315 16,759 4,021 27,070 31,091 (22,682 ) 1989 Mar-89 3-30 Woodland Commons 302 Bellevue, WA — 2,040 8,727 24,610 2,044 33,333 35,377 (22,838 ) 1978 Mar-90 3-30 Woodside Village 145 Ventura, CA — 5,331 21,036 5,387 5,341 26,413 31,754 (13,691 ) 1987 Dec-04 3-30 43,932 $ — $ 2,415,080 $ 8,256,799 $ 1,643,811 $ 2,443,633 $ 9,872,057 $ 12,315,690 $ (3,217,204 ) Costs Initial cost capitalized Gross amount carried at close of period Buildings and subsequent Land and Buildings and Accumulated Property Encumbrance Land improvements to acquisition improvements improvements Total (1) depreciation Other real estate assets — 3,079 12,315 12,183 3,909 23,668 27,577 (15,356 ) $ — $ 3,079 $ 12,315 $ 12,183 $ 3,909 $ 23,668 $ 27,577 $ (15,356 ) Total $ 990,667 $ 2,736,256 $ 9,395,624 $ 1,906,262 $ 2,773,805 $ 11,264,337 $ 14,038,142 $ (3,689,482 ) (1) The aggregate cost for federal income tax purposes is approximately $11.0 billion (unaudited). (2) A portion of land is leased pursuant to a ground lease expiring 2070. (3) The land is leased pursuant to a ground lease expiring 2082. (4) The land is leased pursuant to a ground lease expiring 2070. (5) The land is leased pursuant to a ground lease expiring 2027. (6) The land is leased pursuant to a ground lease expiring 2067. (7) A portion of land is leased pursuant to a ground lease expiring in 2028. (8) The land is leased pursuant to a ground lease expiring in 2028. A summary of activity for rental properties and accumulated depreciation is as follows: 2019 2018 2017 2019 2018 2017 Rental properties: Accumulated depreciation: Balance at beginning of year $ 13,366,101 $ 13,362,073 $ 12,687,722 Balance at beginning of year $ 3,209,548 $ 2,769,297 $ 2,311,546 Acquisition, development, and improvement of real estate 672,041 325,986 700,892 Depreciation expense 479,934 478,721 464,043 Disposition of real estate and other — (321,958 ) (28,367 ) Depreciation expense - Disposals and other — (38,470 ) (6,292 ) Reclassification from other assets and into building and improvements, net — — 1,826 Balance at the end of year $ 3,689,482 $ 3,209,548 $ 2,769,297 Balance at the end of year $ 14,038,142 $ 13,366,101 $ 13,362,073

Summary of Critical and Signi_2

Summary of Critical and Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2019
Accounting Policies [Abstract]
Principles of Consolidation and Basis of Presentation	Principles of Consolidation and Basis of Presentation The accounts of the Company, its controlled subsidiaries and the variable interest entities ("VIEs") in which it is the primary beneficiary are consolidated in the accompanying financial statements and prepared in accordance with U.S. generally accepted accounting principles ("U.S. GAAP"). In the opinion of management, all adjustments necessary for a fair presentation of the financial position, results of operations and cash flows for the periods presented have been included and are normal and recurring in nature. All significant inter-company accounts and transactions have been eliminated. Certain reclassifications have been made to conform to the current year’s presentation. Noncontrolling interest includes the 3.4% limited partner interests in the Operating Partnership not held by the Company at both December 31, 2019 and 2018 . These percentages include the Operating Partnership’s vested long-term incentive plan units (see Note 14).
Recent Accounting Pronouncements	Recent Accounting Pronouncements In June 2016, the FASB issued ASU No. 2016-13 "Measurement of Credit Losses on Financial Instruments," which amends the current approach to estimate credit losses on certain financial assets, including trade and other receivables, available-for-sale securities, and other financial instruments. Generally, this amendment requires entities to establish a valuation allowance for the expected lifetime losses of these certain financial assets. Subsequent changes in the valuation allowance are recorded in current earnings and reversal of previous losses are permitted. Currently, U.S. GAAP requires entities to write down credit losses only when losses are probable and loss reversals are not permitted. The FASB additionally issued various updates to clarify and amend the guidance provided in ASU 2016-13. In May 2019, the FASB issued ASU 2019-04, "Codification Improvements to Topic 326, Financial Instruments - Credit Losses, Topic 815, Derivatives and Hedging, and Topic 825, Financial Instruments," which, with respect to credit losses, among other things, clarifies and addresses issues related to accrued interest, transfers between classifications of loans or debt securities, recoveries, and variable interest rates. Additionally, in May 2019, the FASB issued ASU 2019-05, "Financial Instruments - Credit Losses (Topic 326): Targeted Transition Relief," which allows entities to irrevocably elect the fair value option on certain financial instruments. The new standards will be effective for the Company beginning January 1, 2020 and early adoption is permitted. The Company expects to apply the new standard on January 1, 2020 and does not expect the adoption to have a material impact on the Company's consolidated results of operations or financial position. In August 2018, the FASB issued ASU No. 2018-13 "Fair Value Measurement (Topic 820): Disclosure Framework - Changes to the Disclosure Requirements for Fair Value Measurement," which eliminates certain disclosure requirements affecting all levels of measurements, and modifies and adds new disclosure requirements for Level 3 measurements. The new standard will be effective for the Company beginning January 1, 2020 and early adoption is permitted. The Company expects to apply the new standard on January 1, 2020 and does not expect the adoption to have a material impact on the Company's consolidated results of operations or financial position.
Real Estate Rental Properties	Real Estate Rental Properties Significant expenditures, which improve or extend the life of an asset and have a useful life of greater than one year , are capitalized. Operating real estate assets are stated at cost and consist of land and land improvements, buildings and improvements, furniture, fixtures and equipment, and other costs incurred during their development, redevelopment and acquisition. Expenditures for maintenance and repairs are charged to expense as incurred. The depreciable life of various categories of fixed assets is as follows: Computer software and equipment 3 - 5 years Interior apartment home improvements 5 years Furniture, fixtures and equipment 5 - 10 years Land improvements and certain exterior components of real property 10 years Real estate structures 30 years The Company capitalizes all costs incurred with the predevelopment, development or redevelopment of real estate assets or are associated with the construction or expansion of real property. Such capitalized costs include land, land improvements, allocated costs of the Company’s project management staff, construction costs, as well as interest and related loan fees, property taxes and insurance. Capitalization begins for predevelopment, development, and redevelopment projects when activity commences. Capitalization ends when the apartment home is completed and the property is available for a new tenant or if the development activities cease. The Company allocates the purchase price of real estate on a relative fair value basis to land and building including personal property, and identifiable intangible assets, such as the value of above, below and in-place leases. In making estimates of relative fair values for purposes of allocating purchase price, the Company utilizes a number of sources, including independent land appraisals which consider comparable market transactions, its own analysis of recently acquired or developed comparable properties in our portfolio for land comparables and building replacement costs, and other publicly available market data. In calculating the fair value of identified intangible assets of an acquired property, the in-place leases are valued based on in-place rent rates and amortized over the average remaining term of all acquired leases. The values of the above and below market leases are amortized and recorded as either a decrease (in the case of above market leases) or an increase (in the case of below market leases) to rental revenue over the remaining term of the associated leases acquired. The value of acquired in-place leases are amortized to expense over the average remaining term of the leases acquired. The net carrying value of acquired in-place leases is $1.2 million and $0.1 million as of December 31, 2019 and 2018 , respectively, and are included in prepaid expenses and other assets on the Company's consolidated balance sheets. The Company periodically assesses the carrying value of its real estate investments for indicators of impairment. The judgments regarding the existence of impairment indicators are based on monitoring investment market conditions and performance compared to budget for operating properties including the net operating income for the most recent 12 month period, monitoring estimated costs for properties under development, the Company's ability to hold and its intent with regard to each asset, and each property's remaining useful life. Whenever events or changes in circumstances indicate that the carrying amount of a property held for investment may not be fully recoverable, the carrying amount is evaluated. If the sum of the expected future cash flows (undiscounted and without interest charges) is less than the carrying amount (including intangible assets) of a property held for investment, then the Company will recognize an impairment loss equal to the excess of the carrying amount over the fair value of the property. Fair value of a property is determined using conventional real estate valuation methods, such as discounted cash flow, the property’s unleveraged yield in comparison to the unleveraged yields and/or sales prices of similar communities that have been recently sold, and other third party information, if available. Communities held for sale are carried at the lower of cost and fair value less estimated costs to sell. As of both December 31, 2019 and 2018, no properties were classified as held for sale. The Company recorded an impairment charge of $7.1 million for the year ended December 31, 2019 on a parcel of land that was part of a consolidated co-investment with Canada Pension Plan Investment Board ("CPPIB" or "CPP"). The impairment charge resulted from the Company's offer to acquire CPPIB's 45% interest in the co-investment. The impairment analysis over the parcel’s fair value was determined using internally developed models based on market assumptions. No impairment charges were recorded for the years ended December 31, 2018 or 2017. In the normal course of business, the Company will receive purchase offers for its communities, either solicited or unsolicited. For those offers that are accepted, the prospective buyer will usually require a due diligence period before consummation of the transaction. It is not unusual for matters to arise that result in the withdrawal or rejection of the offer during this process. The Company classifies real estate as "held for sale" when all criteria under the accounting standard for the disposals of long-lived assets have been met.
Co-investments	Co-investments The Company owns investments in joint ventures in which it has significant influence, but its ownership interest does not meet the criteria for consolidation in accordance with U.S. GAAP. Therefore, the Company accounts for co-investments using the equity method of accounting. Under the equity method of accounting, the investment is carried at the cost of assets contributed, plus the Company’s equity in earnings less distributions received and the Company’s share of losses. The significant accounting policies of the Company’s co-investment entities are consistent with those of the Company in all material respects. Upon the acquisition of a controlling interest of a co-investment, the co-investment entity is consolidated and a gain or loss is recognized upon the remeasurement of co-investments in the consolidated statement of income equal to the amount by which the fair value of the co-investment interest in the Company previously owned exceeds its carrying value. A majority of the co-investments, excluding most preferred equity investments, compensate the Company for its asset management services and some of these investments may provide promote income if certain financial return benchmarks are achieved. Asset management fees are recognized when earned, and promote fees are recognized when the earnings events have occurred and the amount is determinable and collectible. Any promote fees are reflected in equity income from co-investments.
Revenues and Gains on Sale of Real Estate	Revenues and Gains on Sale of Real Estate Revenues from tenants renting or leasing apartment homes are recorded when due from tenants and are recognized monthly as they are earned, which approximates a straight-line basis. Apartment homes are rented under short-term leases (generally, lease terms of 9 to 12 months ). Revenues from tenants leasing commercial space are recorded on a straight-line basis over the life of the respective lease. See Note 4, Revenues, and Note 10, Lease Agreements - Company as Lessor, for additional information regarding such revenues. The Company also generates other property-related revenue associated with the leasing of apartment homes, including storage income, pet rent, and other miscellaneous revenue. Similar to rental income, such revenues are recorded when due from tenants and recognized monthly as they are earned. Apart from rental and other property-related revenue, revenues from contracts with customers are recognized as control of the promised services is passed to the customer. For customer contracts related to management and other fees from affiliates (which includes asset management and property management), the transaction price and amount of revenue to be recognized is determined each quarter based on the management fee calculated and earned for that month or quarter. The contract will contain a description of the service and the fee percentage for management services. Payments from such services are one month or one quarter in arrears of the service performed. Subsequent to the adoption of Accounting Standards Codification ("ASC") 610-20 "Gains and Losses from the Derecognition of Nonfinancial Assets" on January 1, 2018, the Company recognizes any gains on sales of real estate when it transfers control of a property and when it is probable that the Company will collect substantially all of the related consideration.
Cash, Cash Equivalents and Restricted Cash	Cash, Cash Equivalents and Restricted Cash Highly liquid investments with original maturities of three months or less when purchased are classified as cash equivalents. Restricted cash balances relate primarily to reserve requirements for capital replacement at certain communities in connection with the Company’s mortgage debt.
Marketable Securities	The Company uses the specific identification method to determine the cost basis of a debt security sold and to reclassify amounts from accumulated other comprehensive loss for such securities. The Company reports its equity securities and available for sale debt securities at fair value, based on quoted market prices (Level 1 for the common stock and investment funds, Level 2 for the unsecured bonds and Level 3 for investments in mortgage backed securities, as defined by the FASB standard for fair value measurements as discussed later in Note 2). As of December 31, 2019 and 2018, $3.6 million and $6.7 million , respectively, of equity securities presented within common stock and stock funds in the tables below represent investments measured at fair value, using net asset value as a practical expedient, and are not categorized in the fair value hierarchy.
Notes Receivable	Notes Receivable Notes receivable relate to real estate financing arrangements including mezzanine and bridge loans. Interest is recognized over the life of the note as interest income.
Capitalization Policy	Capitalization Policy The Company capitalizes all direct and certain indirect costs, including interest, real estate taxes and insurance, incurred during development and redevelopment activities. Interest is capitalized on real estate assets that require a period of time to get them ready for their intended use. The amount of interest capitalized is based upon the average amount of accumulated development expenditures during the reporting period. Included in capitalized costs are management’s estimates of the direct and incremental personnel costs and indirect project costs associated with the Company's development and redevelopment activities. Indirect project costs consist primarily of personnel costs associated with construction administration and development, including accounting, legal fees, and various corporate and community onsite costs that clearly relate to projects under development. Those costs as well as capitalized development and redevelopment fees totaled $17.9 million , $18.6 million and $18.8 million for the years ended December 31, 2019 , 2018 and 2017
Fair Value of Financial Instruments	Fair Value of Financial Instruments The Company values its financial instruments based on the fair value hierarchy of valuation techniques described in the FASB’s accounting standard for fair value measurements. Level 1 inputs are unadjusted, quoted prices in active markets for identical assets or liabilities at the measurement date. Level 2 inputs include quoted prices for similar assets and liabilities in active markets and inputs other than quoted prices observable for the asset or liability. Level 3 inputs are unobservable inputs for the asset or liability. The Company uses Level 1 inputs for the fair values of its cash equivalents and its marketable securities except for unsecured bonds and mortgage backed securities. The Company uses Level 2 inputs for its investments in unsecured bonds, notes receivable, notes payable, and derivative assets/liabilities. These inputs include interest rates for similar financial instruments. The Company’s valuation methodology for derivatives is described in Note 9. The Company uses Level 3 inputs to estimate the fair value of its mortgage backed securities. The Company’s assessment of the significance of a particular input to the fair value measurement in its entirety requires judgment, and considers factors specific to the asset or liability. Management believes that the carrying amounts of the outstanding balances under its lines of credit, and notes and other receivables approximate fair value as of December 31, 2019 and 2018 , because interest rates, yields and other terms for these instruments are consistent with interest rates, yields and other terms currently available for similar instruments. Management has estimated that the fair value of fixed rate debt with a carrying value of $5.2 billion and $5.0 billion at December 31, 2019 and 2018 , respectively, to be $5.4 billion and $5.0 billion at December 31, 2019 and 2018, respectively. Management has estimated the fair value of the Company’s $660.4 million and $619.6 million of variable rate debt at December 31, 2019 and 2018 , respectively, to be $655.8 million and $615.2 million at December 31, 2019 and 2018 , respectively, based on the terms of existing mortgage notes payable, unsecured debt, and variable rate demand notes compared to those available in the marketplace. Management believes that the carrying amounts of cash and cash equivalents, restricted cash, accounts payable and accrued liabilities, construction payables, other liabilities and dividends payable approximate fair value as of December 31, 2019 and 2018 due to the short-term maturity of these instruments. Marketable securities, except mortgage backed securities, are carried at fair value as of December 31, 2019 and 2018 . At December 31, 2019 and 2018 , the Company’s investments in mortgage backed securities had a carrying value of $72.7 million and $127.2 million , respectively. In November 2019, the Company received cash proceeds of $83.1 million from the maturity of an investment in a mortgage backed security. The Company estimated the fair value of its investment in mortgage backed securities at December 31, 2019 and 2018 to be approximately $72.7 million and $129.5 million , respectively. The Company determines the fair value of the mortgage backed securities based on unobservable inputs (Level 3 of the fair value hierarchy) considering the assumptions that market participants would make in valuing these securities. Assumptions such as estimated default rates and discount rates are used to determine expected, discounted cash flows to estimate the fair value.
Interest Rate Protection, Swap, and Forward Contracts	Interest Rate Protection, Swap, and Forward Contracts The Company uses interest rate swaps, interest rate caps, and total return swap contracts to manage interest rate risks. The Company’s objective in using derivatives is to add stability to interest expense and to manage its exposure to interest rate movements or other identified risks. To accomplish this objective, the Company primarily uses interest rate swaps and interest rate caps as part of its cash flow hedging strategy. The Company records all derivatives on its consolidated balance sheets at fair value. The accounting for changes in the fair value of derivatives depends on the intended use of the derivative and the resulting designation. Derivatives used to hedge the exposure to changes in the fair value of an asset, liability, or firm commitment attributable to a particular risk, such as interest rate risk, are considered fair value hedges. Derivatives used to hedge the exposure to variability in expected future cash flows, or other types of forecasted transactions, are considered cash flow hedges. For derivatives designated for accounting purposes as fair value hedges, changes in the fair value of the derivative and the hedged item related to the hedged risk are recognized in earnings. For derivatives designated for accounting purposes as cash flow hedges, the effective portion of changes in the fair value of the derivative is initially reported in other comprehensive income (outside of earnings) and subsequently reclassified to earnings when the hedged transaction affects earnings, and the ineffective portion of changes in the fair value of the derivative is recognized directly in earnings. The Company assesses the initial and ongoing effectiveness of each hedging relationship by comparing the changes in fair value or cash flows of the derivative hedging instrument with the changes in fair value or cash flows of the designated hedged item or transaction. For derivatives not designated for accounting purposes as cash flow hedges, changes in fair value are recognized in earnings. All of the Company’s interest rate swaps are considered cash flow hedges.
Income Taxes	Income Taxes Generally in any year in which Essex qualifies as a real estate investment trust ("REIT") under the Internal Revenue Code (the "IRC"), it is not subject to federal income tax on that portion of its income that it distributes to stockholders. No provision for federal income taxes, other than the taxable REIT subsidiaries discussed below, has been made in the accompanying consolidated financial statements for each of the years in the three-year period ended December 31, 2019 as Essex has elected to be and believes it qualifies under the IRC as a REIT and has made distributions during the periods in amounts to preclude Essex from paying federal income tax. In order to maintain compliance with REIT tax rules, the Company utilizes taxable REIT subsidiaries for various revenue generating or investment activities. The taxable REIT subsidiaries are consolidated by the Company. In general, the activities and tax related provisions, assets and liabilities are not material. On December 22, 2017, the Tax Cuts and Jobs Act ("Tax Act") was signed into law, which reduced the federal income tax rate from 35% to 21% effective January 1, 2018. As a result of the Tax Act, the Company remeasured its net deferred tax liabilities at December 31, 2017, accordingly a net tax benefit of $1.5 million was recorded. As a partnership, the Operating Partnership is not subject to federal or state income taxes, except that in order to maintain Essex's compliance with REIT tax rules that are applicable to Essex, the Operating Partnership utilizes taxable REIT subsidiaries for various revenue generating or investment activities. The taxable REIT subsidiaries are consolidated by the Operating Partnership.
Equity-based Compensation	Equity-based Compensation The cost of share- and unit-based compensation awards is measured at the grant date based on the estimated fair value of the awards. The estimated fair value of stock options and restricted stock granted by the Company are being amortized over the vesting period. The estimated grant date fair values of the long-term incentive plan units (discussed in Note 14) are being amortized over the expected service periods.
Changes in Accumulated Other Comprehensive Loss, by Component	Amounts reclassified from accumulated other comprehensive loss in connection with derivatives are recorded in interest expense on the consolidated statements of income. Realized gains and losses on available for sale debt securities are included in interest and other income on the consolidated statements of income.
Accounting Estimates	Accounting Estimates The preparation of consolidated financial statements, in accordance with U.S. GAAP, requires the Company to make estimates and judgments that affect the reported amounts of assets, liabilities, revenues and expenses and related disclosures of contingent assets and liabilities. On an ongoing basis, the Company evaluates its estimates, including those related to acquiring, developing and assessing the carrying values of its real estate portfolio, its investments in and advances to joint ventures and affiliates, and its notes receivable. The Company bases its estimates on historical experience, current market conditions, and on various other assumptions that are believed to be reasonable under the circumstances. Actual results may vary from those estimates and those estimates could be different under different assumptions or conditions.
Variable Interest Entities	Variable Interest Entities In accordance with accounting standards for consolidation of VIEs, the Company consolidates the Operating Partnership, 17 DownREIT entities (comprising nine communities), and six co-investments as of December 31, 2019 . As of December 31, 2018 , the Company consolidated the Operating Partnership, 16 DownREIT entities (comprising eight communities), and eight co-investments. The Company consolidates these entities because it is deemed the primary beneficiary. The Company has no assets or liabilities other than its investment in the Operating Partnership. The consolidated total assets and liabilities related to the above consolidated co-investments and DownREIT entities, net of intercompany eliminations, were approximately $1.0 billion and $364.3 million , respectively, as of December 31, 2019 , and $849.8 million and $261.7 million , respectively, as of December 31, 2018 . Noncontrolling interests in these entities were $122.5 million and $64.5 million as of December 31, 2019 and 2018 , respectively. The Company's financial risk in each VIE is limited to its equity investment in the VIE. The DownREIT VIEs collectively own nine apartment communities in which the Company is the general partner or manager of the DownREIT entity, the Operating Partnership is a special limited partner or member, and the other limited partners or members were granted rights of redemption for their interests. Such limited partners or members can request to be redeemed and the Company, subject to certain restrictions, can elect to redeem their rights for cash or by issuing shares of its common stock on a one share per unit basis. Conversion values will be based on the market value of the Company's common stock at the time of redemption multiplied by the number of units stipulated under various arrangements, as noted above. The other limited partners or members receive distributions based on the Company's current dividend rate times the number of units held. Total DownREIT units outstanding were 1,033,907 and 912,269 as of December 31, 2019 and 2018 , respectively, and the redemption value of the units, based on the closing price of the Company’s common stock totaled approximately $311.1 million and $223.7 million , as of December 31, 2019 and 2018 , respectively. The carrying value of redeemable noncontrolling interest in the accompanying balance sheets was $37.4 million and $35.5 million as of December 31, 2019 and 2018 , respectively. Of these amounts, $13.0 million and $14.5 million as of December 31, 2019 and 2018 , respectively, represent units of limited partners' or members' interests in DownREIT VIEs as to which it is outside of the Company’s control to redeem the DownREIT units with Company common stock and may potentially be redeemed for cash, and are presented at either their redemption value or historical cost, depending on the limited partner's or members' right to redeem their units as of the balance sheet date. The carrying value of DownREIT units as to which it is within the control of the Company to redeem the units with its common stock was $97.7 million and $32.4 million as of December 31, 2019 and 2018 , respectively, and is classified within noncontrolling interests in the accompanying consolidated balance sheets. Interest holders in VIEs consolidated by the Company are allocated a priority of net income equal to the cash payments made to those interest holders or distributions from cash flow. The remaining results of operations are generally allocated to the Company.

Summary of Critical and Signi_3

Summary of Critical and Significant Accounting Policies (Tables)	12 Months Ended
	Dec. 31, 2019
Summary of Critical and Significant Accounting Policies [Abstract]
Summary of Depreciable Life of Various Categories of Fixed Assets	The depreciable life of various categories of fixed assets is as follows: Computer software and equipment 3 - 5 years Interior apartment home improvements 5 years Furniture, fixtures and equipment 5 - 10 years Land improvements and certain exterior components of real property 10 years Real estate structures 30 years
Schedule of Restricted Cash Reconciliation	The following table provides a reconciliation of cash, cash equivalents, and restricted cash reported within the consolidated balance sheets that sum to the total of the same such amounts shown in the consolidated statements of cash flows ($ in thousands): 2019 2018 2017 Cash and cash equivalents - unrestricted $ 70,087 $ 134,465 $ 44,620 Cash and cash equivalents - restricted 11,007 16,930 16,506 Total unrestricted and restricted cash and cash equivalents shown in the consolidated statements of cash flows $ 81,094 $ 151,395 $ 61,126
Schedule of Cash and Cash Equivalents Reconciliation	The following table provides a reconciliation of cash, cash equivalents, and restricted cash reported within the consolidated balance sheets that sum to the total of the same such amounts shown in the consolidated statements of cash flows ($ in thousands): 2019 2018 2017 Cash and cash equivalents - unrestricted $ 70,087 $ 134,465 $ 44,620 Cash and cash equivalents - restricted 11,007 16,930 16,506 Total unrestricted and restricted cash and cash equivalents shown in the consolidated statements of cash flows $ 81,094 $ 151,395 $ 61,126
Components of Marketable Securities	As of December 31, 2019 and 2018 marketable securities consist of the following ($ in thousands): December 31, 2019 Amortized Cost Gross Unrealized Gain Carrying Value Equity securities: Investment funds - debt securities $ 29,588 $ 544 $ 30,132 Common stock and stock funds 34,941 2,927 37,868 Debt securities: Available for sale U.S. treasury securities 2,421 13 2,434 Investment-grade unsecured bonds 1,048 60 1,108 Held to maturity: Mortgage backed securities 72,651 — 72,651 Total - Marketable securities $ 140,649 $ 3,544 $ 144,193 December 31, 2018 Amortized Cost Gross Unrealized Loss Carrying Value Equity securities: Investment funds - debt securities $ 31,934 $ (568 ) $ 31,366 Common stock and stock funds 39,731 (1,671 ) 38,060 Debt securities: Available for sale U.S. treasury securities 8,983 (31 ) 8,952 Investment-grade unsecured bonds 4,125 (145 ) 3,980 Held to maturity: Mortgage backed securities 127,187 — 127,187 Total - Marketable securities $ 211,960 $ (2,415 ) $ 209,545
Summary of Status of Cash Dividends Distributed	The status of cash dividends distributed for the years ended December 31, 2019 , 2018 , and 2017 related to common stock are classified for tax purposes as follows: 2019 2018 2017 Common Stock Ordinary income 83.81 % 79.72 % 84.04 % Capital gain 13.78 % 15.35 % 13.20 % Unrecaptured section 1250 capital gain 2.41 % 4.93 % 2.76 % 100.00 % 100.00 % 100.00 %
Changes in Accumulated Other Comprehensive Income (Loss), Net by Component	Changes in Accumulated Other Comprehensive Loss, Net, by Component Essex Property Trust, Inc. ($ in thousands) Change in fair value and amortization of swap settlements Unrealized gain (loss) on available for sale securities Total Balance at December 31, 2018 $ (13,077 ) $ (140 ) $ (13,217 ) Cumulative effect upon adoption of ASU No. 2017-12 175 — 175 Other comprehensive income before reclassification 7,836 272 8,108 Amounts reclassified from accumulated other comprehensive loss (8,923 ) (31 ) (8,954 ) Other comprehensive income (loss) (912 ) 241 (671 ) Balance at December 31, 2019 $ (13,989 ) $ 101 $ (13,888 )
Changes in the Redemption Value of Redeemable Noncontrolling Interests	The changes in the redemption value of redeemable noncontrolling interests for the years ended December 31, 2019 , 2018 , and 2017 is as follows: 2019 2018 2017 Balance at January 1, $ 35,475 $ 39,206 $ 44,684 Reclassifications due to change in redemption value and other 2,008 1,164 65 Redemptions (73 ) (4,895 ) (5,543 ) Balance at December 31, $ 37,410 $ 35,475 $ 39,206
Essex Portfolio, L.P.
Summary of Critical and Significant Accounting Policies [Abstract]
Changes in Accumulated Other Comprehensive Income (Loss), Net by Component	Changes in Accumulated Other Comprehensive Loss, by Component Essex Portfolio, L.P. ($ in thousands) Change in fair value and amortization of swap settlements Unrealized gain (loss) on available for sale securities Total Balance at December 31, 2018 $ (9,593 ) $ (145 ) $ (9,738 ) Cumulative effect upon adoption of ASU No. 2017-12 181 — 181 Other comprehensive income before reclassification 8,111 281 8,392 Amounts reclassified from accumulated other comprehensive loss (9,235 ) (32 ) (9,267 ) Other comprehensive income (loss) (943 ) 249 (694 ) Balance at December 31, 2019 $ (10,536 ) $ 104 $ (10,432 )

Real Estate Investments (Tables

Real Estate Investments (Tables)	12 Months Ended
Real Estate Investments (Tables)	Dec. 31, 2019
Real Estate Investments, Net [Abstract]
Schedule of Real Estate Properties	The table below summarizes acquisition activity for the year ended December 31, 2019 ($ in millions): Property Name Location Apartment Homes Essex Ownership Percentage Quarter in 2019 Purchase Price One South Market (1) San Jose, CA 312 100 % Q1 $ 80.6 Brio (2) Walnut Creek, CA 300 N/A Q2 164.9 Township Redwood City, CA 132 100 % Q3 88.7 Pure Redmond Redmond, WA 105 100 % Q4 39.1 Total 2019 849 $ 373.3 (1) In March 2019, the Company purchased the joint venture partner's 45% membership interest in the One South Market co-investment based on an estimated property valuation of $179.0 million . In conjunction with the acquisition, $86.0 million of mortgage debt that encumbered the property was repaid. (2) In June 2019, the Company acquired Brio for a total contract price of $164.9 million in a DownREIT transaction. As part of the acquisition, the Company assumed $98.7 million of mortgage debt in the community. Based on a VIE analysis performed by the Company, the property was consolidated.
Summary of Co Investment	The carrying values of the Company’s co-investments as of December 31, 2019 and 2018 are as follows ($ in thousands, except in parenthetical): Weighted Average Essex Ownership December 31, Percentage (1) 2019 2018 Ownership interest in: CPPIB 55 % $ 345,466 $ 482,507 Wesco I, Wesco III, Wesco IV, and Wesco V 51 % 216,756 194,890 BEXAEW, BEX II, BEX III, and BEX IV 50 % 160,888 121,780 Other 48 % 20,351 34,093 Total operating and other co-investments, net 743,461 833,270 Total predevelopment and development co-investments 50 % 146,944 94,060 Total preferred interest co-investments (includes related party investments of $73.2 million and $51.8 million as of December 31, 2019 and December 31, 2018, respectively - Note 6 - Related Party Transactions for further discussion) 444,934 372,810 Total co-investments, net $ 1,335,339 $ 1,300,140 (1) Weighted average Company ownership percentages are as of December 31, 2019.
Summarized Financial Statement for Co Investment Accounted for Under the Equity Method	The combined summarized financial information of co-investments is as follows ($ in thousands): December 31, 2019 2018 Combined balance sheets: (1) Rental properties and real estate under development $ 4,733,762 $ 4,367,987 Other assets 139,562 104,119 Total assets $ 4,873,324 $ 4,472,106 Debt $ 2,442,213 $ 2,190,764 Other liabilities 117,160 106,316 Equity 2,313,951 2,175,026 Total liabilities and equity $ 4,873,324 $ 4,472,106 Company's share of equity $ 1,335,339 $ 1,300,140 Years ended December 31, 2019 2018 2017 Combined statements of income: (1) Property revenues $ 336,922 $ 332,164 $ 312,841 Property operating expenses (115,658 ) (107,584 ) (110,583 ) Net operating income 221,264 224,580 202,258 Gain on sale of real estate 112,918 24,218 90,663 Interest expense (65,665 ) (63,913 ) (62,844 ) General and administrative (9,575 ) (6,379 ) (9,091 ) Depreciation and amortization (121,006 ) (126,485 ) (118,048 ) Net income $ 137,936 $ 52,021 $ 102,938 Company's share of net income (2) $ 112,136 $ 89,132 $ 86,445 (1) Includes preferred equity investments held by the Company. (2) Includes the Company's share of equity income from joint ventures and preferred equity investments, gain on sales of co-investments, co-investment promote income and income from early redemption of preferred equity investments. Includes related party income of $7.5 million , $2.0 million , and $1.9 million for the years ended December 31, 2019, 2018, and 2017, respectively.

Revenues (Tables)

Revenues (Tables)	12 Months Ended
Revenues (Tables)	Dec. 31, 2019
Revenue from Contract with Customer [Abstract]
Summary of Disaggregation of Revenue	The following table presents the Company’s revenues disaggregated by revenue source ($ in thousands): 2019 2018 2017 Rental income (1) $ 1,425,585 $ 1,366,590 $ 1,326,464 Other property (1) 25,043 24,280 27,861 Management and other fees from affiliates 9,527 9,183 9,574 Total revenues $ 1,460,155 $ 1,400,053 $ 1,363,899 (1) On January 1, 2019, the Company adopted ASU No. 2016-02 and ASU No. 2018-11. As a result of this adoption, certain amounts previously classified as other property revenue have been reclassified to rental income. Prior period amounts have been adjusted to conform to the current period's presentation. The following table presents the Company’s rental and other property-leasing revenues disaggregated by geographic operating segment ($ in thousands): 2019 2018 2017 Southern California $ 610,240 $ 592,281 $ 574,552 Northern California 569,556 522,561 505,313 Seattle Metro 245,476 236,525 229,871 Other real estate assets (1) 25,356 39,503 44,589 Total rental and other property revenues $ 1,450,628 $ 1,390,870 $ 1,354,325 (1) Other real estate assets consists of revenue generated from retail space, commercial properties, held for sale properties, and disposition properties. Executive management does not evaluate such operating performance geographically. The following table presents the Company’s rental and other property revenues disaggregated by current property category status ($ in thousands): 2019 2018 2017 Same-property (1) $ 1,367,311 $ 1,321,862 $ 1,284,030 Acquisitions (2) 22,924 259 — Development (3) 7,562 2,713 — Redevelopment 20,988 20,345 19,641 Non-residential/other, net (4) 31,843 45,691 50,654 Total rental and other property revenues $ 1,450,628 $ 1,390,870 $ 1,354,325 (1) Properties that have comparable stabilized results as of January 1, 2018 and are consolidated by the Company for the years ended December 31, 2019 , 2018, and 2017. A community is generally considered to have reach stabilized operations once it achieves an initial occupancy of 95% . (2) Acquisitions includes properties acquired which did not have comparable stabilized results as of January 1, 2018. (3) Development includes properties developed which did not have stabilized results as of January 1, 2018. (4)

Notes and Other Receivables (Ta

Notes and Other Receivables (Tables)	12 Months Ended
Notes and Other Receivables (Tables)	Dec. 31, 2019
Notes and Other Receivables [Abstract]
Summary of Notes and Other Receivables	Notes and other receivables consist of the following as of December 31, 2019 and 2018 ($ in thousands): 2019 2018 Note receivable, secured, bearing interest at 9.00%, due May 2021 16,828 15,226 Note receivable, secured, bearing interest at 10.75%, due September 2020 (1) — 32,650 Note receivable, secured, bearing interest at 9.90%, due November 2021 12,838 — Related party note receivable, secured, bearing interest at 9.50%, due October 2019 (2)(3) — 6,618 Related party note receivable, secured, bearing variable rate interest, due February 2020 (3) 85,713 — Notes and other receivables from affiliates (4) 4,442 4,457 Other receivables 14,544 12,944 Total notes and receivables $ 134,365 $ 71,895 (1) In December 2019, the Company received cash of $36.1 million for the payoff of this note receivable. (2) In October 2019, the Company received cash of $6.7 million for the payoff of this note receivable. (3) See Note 6, Related Party Transactions, for additional details. (4) These amounts consist of short-term loans outstanding and due from various joint ventures as of December 31, 2019 and 2018, respectively. See Note 6, Related Party Transactions, for additional details.

Unsecured Debt (Tables)

Unsecured Debt (Tables)	12 Months Ended
Unsecured Debt (Tables)	Dec. 31, 2019
Debt Disclosure [Abstract]
Schedule of Unsecured Debt	Unsecured debt consists of the following as of December 31, 2019 and 2018 ($ in thousands): 2019 2018 Weighted Average Maturity In Years Unsecured bonds private placement - fixed rate $ 199,820 $ 274,624 1.5 Term loan - variable rate 349,189 348,813 2.1 Bonds public offering - fixed rate 4,214,197 3,175,879 7.4 Unsecured debt, net (1) 4,763,206 3,799,316 Lines of credit (2) 55,000 — Total unsecured debt $ 4,818,206 $ 3,799,316 Weighted average interest rate on fixed rate unsecured bonds private placement and bonds public offering 3.8 % 3.9 % Weighted average interest rate on variable rate term loan 2.7 % 3.0 % Weighted average interest rate on lines of credit 2.5 % 3.2 % (1) Includes unamortized discount, net of premiums, of $12.2 million and $7.1 million and unamortized debt issuance costs of $24.5 million and $18.5 million as of December 31, 2019 and 2018 , respectively. (2) Lines of credit, related to the Company's two lines of unsecured credit aggregating $1.24 billion , excludes unamortized debt issuance costs of $3.8 million and $3.9 million as of December 31, 2019 and 2018, respectively. These debt issuance costs are included in prepaid expenses and other assets on the consolidated balance sheets.
Summary of Unsecured Private Placement Bonds	The following is a summary of the Company’s unsecured private placement bonds as of December 31, 2019 and 2018 ($ in thousands): Maturity 2019 2018 Coupon Rate Senior unsecured private placement notes December 2019 — 75,000 4.92 % Senior unsecured private placement notes April 2021 100,000 100,000 4.27 % Senior unsecured private placement notes June 2021 50,000 50,000 4.30 % Senior unsecured private placement notes August 2021 50,000 50,000 4.37 % $ 200,000 $ 275,000
Summary of Senior Unsecured Notes	The following is a summary of the Company’s senior unsecured notes as of December 31, 2019 and 2018 ($ in thousands): Maturity 2019 2018 Coupon Senior notes March 2021 $ 300,000 $ 300,000 5.200 % Senior notes August 2022 300,000 300,000 3.625 % Senior notes January 2023 300,000 300,000 3.375 % Senior notes May 2023 300,000 300,000 3.250 % Senior notes May 2024 400,000 400,000 3.875 % Senior notes April 2025 500,000 500,000 3.500 % Senior notes April 2026 450,000 450,000 3.375 % Senior notes May 2027 350,000 350,000 3.625 % Senior notes March 2029 500,000 — 4.000 % Senior notes January 2030 550,000 — 3.000 % Senior notes March 2048 300,000 300,000 4.500 % $ 4,250,000 $ 3,200,000 December 31, 2019 and 2018 ($ in thousands): 2019 2018 Fixed rate mortgage notes payable $ 736,490 $ 1,538,488 Variable rate mortgage notes payable (1) 254,177 268,138 Total mortgage notes payable (2) $ 990,667 $ 1,806,626 Number of properties securing mortgage notes 24 50 Remaining terms 1-27 years 1-28 years Weighted average interest rate 4.1 % 4.3 %
Schedule of Unsecured Debt Principal Payments Excluding Lines of Credit	The aggregate scheduled principal payments of unsecured debt payable, excluding lines of credit, at December 31, 2019 are as follows ($ in thousands): 2020 $ — 2021 500,000 2022 650,000 2023 600,000 2024 400,000 Thereafter 2,650,000 $ 4,800,000 The aggregate scheduled principal payments of mortgage notes payable at December 31, 2019 are as follows ($ in thousands): 2020 $ 288,057 2021 31,653 2022 43,188 2023 2,945 2024 3,109 Thereafter 618,383 $ 987,335 (1) Variable rate mortgage notes payable, including $255.4 million in bonds that have been converted to variable rate through total return swap contracts, consists of multifamily housing mortgage revenue bonds secured by deeds of trust on rental properties and guaranteed by collateral pledge agreements, payable monthly at a variable rate as defined in the Loan Agreement (approximately 2.3% at December 2019 and 2.5% at December 2018) including credit enhancement and underwriting fees. Among the terms imposed on the properties, which are security for the bonds, is a requirement that 20% of the apartment homes are subject to tenant income criteria. Once the bonds have been repaid, the properties may no longer be obligated to comply with such tenant income criteria. Principal balances are due in full at various maturity dates from December 2027 through December 2046. The Company had no interest rate cap agreements as of December 31, 2019. As of December 31, 2018, $9.9 million of these bonds was subject to various interest rate cap agreements that limit the maximum interest rate to such bonds. The interest rate cap agreements matured in December 2019. (2) Includes total unamortized premium, net of discounts, of $ 5.9 million and $ 14.9 million and reduced by unamortized debt issuance costs of $2.6 million and $4.2 million as of December 31, 2019 and 2018 , respectively.

Mortgage Notes Payable (Tables)

Mortgage Notes Payable (Tables)	12 Months Ended
Mortgage Notes Payable (Tables)	Dec. 31, 2019
Notes Payable [Abstract]
Summary of Mortgages Notes Payable	The following is a summary of the Company’s senior unsecured notes as of December 31, 2019 and 2018 ($ in thousands): Maturity 2019 2018 Coupon Senior notes March 2021 $ 300,000 $ 300,000 5.200 % Senior notes August 2022 300,000 300,000 3.625 % Senior notes January 2023 300,000 300,000 3.375 % Senior notes May 2023 300,000 300,000 3.250 % Senior notes May 2024 400,000 400,000 3.875 % Senior notes April 2025 500,000 500,000 3.500 % Senior notes April 2026 450,000 450,000 3.375 % Senior notes May 2027 350,000 350,000 3.625 % Senior notes March 2029 500,000 — 4.000 % Senior notes January 2030 550,000 — 3.000 % Senior notes March 2048 300,000 300,000 4.500 % $ 4,250,000 $ 3,200,000 December 31, 2019 and 2018 ($ in thousands): 2019 2018 Fixed rate mortgage notes payable $ 736,490 $ 1,538,488 Variable rate mortgage notes payable (1) 254,177 268,138 Total mortgage notes payable (2) $ 990,667 $ 1,806,626 Number of properties securing mortgage notes 24 50 Remaining terms 1-27 years 1-28 years Weighted average interest rate 4.1 % 4.3 %
Aggregate Scheduled Principal Payments of Mortgage Notes Payable	The aggregate scheduled principal payments of unsecured debt payable, excluding lines of credit, at December 31, 2019 are as follows ($ in thousands): 2020 $ — 2021 500,000 2022 650,000 2023 600,000 2024 400,000 Thereafter 2,650,000 $ 4,800,000 The aggregate scheduled principal payments of mortgage notes payable at December 31, 2019 are as follows ($ in thousands): 2020 $ 288,057 2021 31,653 2022 43,188 2023 2,945 2024 3,109 Thereafter 618,383 $ 987,335 (1) Variable rate mortgage notes payable, including $255.4 million in bonds that have been converted to variable rate through total return swap contracts, consists of multifamily housing mortgage revenue bonds secured by deeds of trust on rental properties and guaranteed by collateral pledge agreements, payable monthly at a variable rate as defined in the Loan Agreement (approximately 2.3% at December 2019 and 2.5% at December 2018) including credit enhancement and underwriting fees. Among the terms imposed on the properties, which are security for the bonds, is a requirement that 20% of the apartment homes are subject to tenant income criteria. Once the bonds have been repaid, the properties may no longer be obligated to comply with such tenant income criteria. Principal balances are due in full at various maturity dates from December 2027 through December 2046. The Company had no interest rate cap agreements as of December 31, 2019. As of December 31, 2018, $9.9 million of these bonds was subject to various interest rate cap agreements that limit the maximum interest rate to such bonds. The interest rate cap agreements matured in December 2019. (2) Includes total unamortized premium, net of discounts, of $ 5.9 million and $ 14.9 million and reduced by unamortized debt issuance costs of $2.6 million and $4.2 million as of December 31, 2019 and 2018 , respectively.

Lease Agreements - Company as_3

Lease Agreements - Company as Lessor (Tables)	12 Months Ended
Lease Agreements - Company as Lessor (Tables)	Dec. 31, 2019
Leases [Abstract]
Summary of Lessor Future Minimum Base Rent	A maturity analysis of undiscounted future minimum non-cancelable base rent to be received under the above operating leases as of December 31, 2019 is summarized as follows ($ in thousands): Future Minimum Rent 2020 $ 746,150 2021 17,986 2022 14,482 2023 13,302 2024 11,542 Thereafter 26,967 $ 830,429
Schedule of Future Minimum Rental Payments for Operating Leases	As of December 31, 2018, in accordance with previously applicable lease accounting guidance, ASC 840 "Leases", the future minimum non-cancelable base rent to be received under one commercial building and commercial portions of mixed use communities, for which the Company was the lessor, was as follows ($ in thousands): Future Minimum Rent 2019 $ 16,386 2020 15,842 2021 14,412 2022 13,324 2023 12,181 Thereafter 33,034 $ 105,179 As of December 31, 2018, in accordance with previously applicable lease accounting guidance, ASC 840, the total minimum lease commitments under operating leases was as follows ($ in thousands): Future Minimum Rent 2019 $ 6,811 2020 6,855 2021 6,877 2022 6,888 2023 6,860 Thereafter 153,258 $ 187,549

Lease Agreements - Company as_4

Lease Agreements - Company as Lessee (Tables)	12 Months Ended
Lease Agreements - Company as Lessee (Tables)	Dec. 31, 2019
Leases [Abstract]
Schedule of Balance Sheet Information Related to Leases	Supplemental consolidated balance sheet information related to leases as of December 31, 2019 is as follows ($ in thousands): Classification December 31, 2019 Assets Operating lease right-of-use assets Operating lease right-of-use assets $ 74,744 Total leased assets $ 74,744 Liabilities Operating lease liabilities Operating lease liabilities 76,740 Total lease liabilities $ 76,740
Schedule of Components of Lease Expense/Discount Rate Information	The components of lease expense for the year ended December 31, 2019 were as follows ($ in thousands): December 31, 2019 Operating lease cost $ 6,745 Variable lease cost 783 Short-term lease cost 610 Sublease income (436 ) Total lease cost $ 7,702 Lease term and discount rate information for leases at December 31, 2019 are as follows: Weighted-average of remaining lease terms (years) Operating Leases 39 Weighted-average of discount rates Operating Leases 4.99 %
Schedule of Maturity Analysis of Operating Lease Liabilities	A maturity analysis of lease liabilities as of December 31, 2019 are as follows ($ in thousands): Operating Leases 2020 $ 6,855 2021 6,877 2022 6,888 2023 6,860 2024 6,585 Thereafter 146,673 Total lease payments $ 180,738 Less: Imputed interest (103,998 ) Present Value of lease liabilities $ 76,740
Schedule of Future Minimum Rental Payments for Operating Leases	As of December 31, 2018, in accordance with previously applicable lease accounting guidance, ASC 840 "Leases", the future minimum non-cancelable base rent to be received under one commercial building and commercial portions of mixed use communities, for which the Company was the lessor, was as follows ($ in thousands): Future Minimum Rent 2019 $ 16,386 2020 15,842 2021 14,412 2022 13,324 2023 12,181 Thereafter 33,034 $ 105,179 As of December 31, 2018, in accordance with previously applicable lease accounting guidance, ASC 840, the total minimum lease commitments under operating leases was as follows ($ in thousands): Future Minimum Rent 2019 $ 6,811 2020 6,855 2021 6,877 2022 6,888 2023 6,860 Thereafter 153,258 $ 187,549

Net Income Per Common Share a_2

Net Income Per Common Share and Net Income Per Common Unit (Tables)	12 Months Ended
	Dec. 31, 2019
Net Income Per Share and Net Income Per Unit [Line Items]
Schedule of Net Income Per Common Share and Net Income Per Unit	Basic and diluted income per share is calculated as follows for the years ended December 31 ($ in thousands, except share and per share amounts): 2019 2018 2017 Income Weighted- average Common Shares Per Common Share Amount Income Weighted- average Common Shares Per Common Share Amount Income Weighted- average Common Shares Per Common Share Amount Basic: Net income available to common stockholders $ 439,286 65,840,422 $ 6.67 $ 390,153 66,041,058 $ 5.91 $ 433,059 65,829,155 $ 6.58 Effect of Dilutive Securities Stock options — 99,033 — 44,031 — 69,100 Diluted: Net income available to common stockholders $ 439,286 65,939,455 $ 6.66 $ 390,153 66,085,089 $ 5.90 $ 433,059 65,898,255 $ 6.57
Essex Portfolio, L.P.
Net Income Per Share and Net Income Per Unit [Line Items]
Schedule of Net Income Per Common Share and Net Income Per Unit	Basic and diluted income per unit is calculated as follows for the years ended December 31 ($ in thousands, except unit and per unit amounts): 2019 2018 2017 Income Weighted- average Common Units Per Common Unit Amount Income Weighted- average Common Units Per Common Unit Amount Income Weighted- average Common Units Per Common Unit Amount Basic: Net income available to common unitholders $ 454,629 68,140,900 $ 6.67 $ 403,605 68,315,999 $ 5.91 $ 447,884 68,081,730 $ 6.58 Effect of Dilutive Securities Stock options — 99,033 — 44,031 — 69,100 Diluted: Net income available to common unitholders $ 454,629 68,239,933 $ 6.66 $ 403,605 68,360,030 $ 5.90 $ 447,884 68,150,830 $ 6.57

Equity Based Compensation Pla_2

Equity Based Compensation Plans (Tables)	12 Months Ended
Equity Based Compensation Plans (Tables)	Dec. 31, 2019
Share-based Payment Arrangement, Noncash Expense [Abstract]
Weighted Average Assumptions Used to Estimate Fair Value of Stock Options	The fair value of stock options was estimated on the date of grant using the Black-Scholes option pricing model with the following weighted average assumptions used for grants: 2019 2018 2017 Stock price $ 304.85 $ 262.09 $ 240.56 Risk-free interest rates 2.01 % 2.76 % 2.30 % Expected lives 6 years 6 years 6 years Volatility 19.56 % 24.89 % 24.10 % Dividend yield 2.72 % 2.81 % 2.90 %
Summary of Stock Options Activity	A summary of the status of the Company’s stock option plans as of December 31, 2019 , 2018 , and 2017 and changes during the years ended on those dates is presented below: 2019 2018 2017 Shares Weighted- average exercise price Shares Weighted- average exercise price Shares Weighted- average exercise price Outstanding at beginning of year 612,954 $ 224.57 536,208 $ 211.41 557,648 $ 181.50 Granted 148,147 304.85 119,361 262.09 164,677 240.56 Exercised (182,817 ) 205.25 (39,175 ) 159.05 (176,489 ) 146.86 Forfeited and canceled (5,313 ) 257.87 (3,440 ) 221.80 (9,628 ) 160.40 Outstanding at end of year 572,971 251.10 612,954 224.57 536,208 211.41 Options exercisable at year end 305,379 223.90 322,837 206.63 223,796 191.09
Summary of Restricted Stock Activity	The following table summarizes information about restricted stock outstanding as of December 31, 2019 , 2018 and 2017 and changes during the years ended: 2019 2018 2017 Shares Weighted- average grant price Shares Weighted- average grant price Shares Weighted- average grant price Unvested at beginning of year 91,058 $ 180.99 90,823 $ 163.49 58,349 $ 149.11 Granted 41,643 235.93 51,945 194.70 62,706 177.28 Vested (13,222 ) 143.56 (48,212 ) 150.76 (29,675 ) 170.17 Forfeited and canceled (4,602 ) 158.06 (3,498 ) 158.71 (557 ) 119.37 Unvested at end of year 114,877 197.62 91,058 180.99 90,823 163.49
Summary of Long Term Incentive Plan - Z Units	The following table summarizes information about the LTIP Units outstanding as of December 31, 2019 : Long-Term Incentive Plan - LTIP Units Total Vested Units Total Unvested Units Total Outstanding Units Weighted- average Grant-date Fair Value Weighted- average Remaining Contractual Life (years) Balance, December 31, 2016 181,027 60,027 241,054 $ 75.11 8.5 Granted — — — Vested 32,961 (32,961 ) — Converted (688 ) — (688 ) Cancelled — (3,854 ) (3,854 ) Balance, December 31, 2017 213,300 23,212 236,512 $ 75.03 7.5 Granted — — — Vested 12,051 (12,051 ) — Converted (91,270 ) — (91,270 ) Cancelled — — — Balance, December 31, 2018 134,081 11,161 145,242 $ 75.03 6.5 Granted — — — Vested 9,176 (9,176 ) — Converted — — — Cancelled — (95 ) (95 ) Balance, December 31, 2019 143,257 1,890 145,147 $ 75.03 5.2

Segment Information (Tables)

Segment Information (Tables)	12 Months Ended
Segment Information (Tables)	Dec. 31, 2019
Segment Reporting [Abstract]
Summary of Reportable Operating Segments of Revenue and NOI	The revenues and NOI for each of the reportable operating segments are summarized as follows for the years ended December 31, 2019 , 2018 , and 2017 ($ in thousands): Years Ended December 31, 2019 2018 2017 Revenues: Southern California $ 610,240 $ 592,281 $ 574,552 Northern California 569,556 522,561 505,313 Seattle Metro 245,476 236,525 229,871 Other real estate assets 25,356 39,503 44,589 Total property revenues $ 1,450,628 $ 1,390,870 $ 1,354,325 Net operating income: Southern California $ 434,267 $ 421,274 $ 407,771 Northern California 420,320 385,483 371,597 Seattle Metro 173,875 165,244 162,111 Other real estate assets 24,471 33,535 37,460 Total net operating income 1,052,933 1,005,536 978,939 Management and other fees from affiliates 9,527 9,183 9,574 Corporate-level property management expenses (32,899 ) (31,062 ) (30,156 ) Depreciation and amortization (483,750 ) (479,884 ) (468,881 ) General and administrative (54,262 ) (53,451 ) (41,385 ) Expensed acquisition and investment related costs (168 ) (194 ) (1,569 ) Impairment loss (7,105 ) — — Gain (loss) on sale of real estate and land (3,164 ) 61,861 26,423 Interest expense (217,339 ) (220,492 ) (222,894 ) Total return swap income 8,446 8,707 10,098 Interest and other income 46,298 23,010 24,604 Equity income from co-investments 112,136 89,132 86,445 Deferred tax expense on unrealized gain on unconsolidated co-investment (1,457 ) — — Gain (loss) on early retirement of debt, net 3,717 — (1,796 ) Gain on remeasurement of co-investment 31,535 1,253 88,641 Net income $ 464,448 $ 413,599 $ 458,043
Summary of Total Assets from Reportable Operating Segments	Total assets for each of the reportable operating segments are summarized as follows as of December 31, 2019 and 2018 ($ in thousands): As of December 31, 2019 2018 Assets: Southern California $ 4,233,110 $ 4,368,882 Northern California 4,622,268 4,289,232 Seattle Metro 1,481,061 1,485,040 Other real estate assets 12,221 13,399 Net reportable operating segments - real estate assets 10,348,660 10,156,553 Real estate under development 546,075 454,629 Co-investments 1,335,339 1,300,140 Cash and cash equivalents, including restricted cash 81,094 151,395 Marketable securities 144,193 209,545 Notes and other receivables 134,365 71,895 Operating lease right-of-use assets 74,744 — Prepaid expenses and other assets 40,935 39,439 Total assets $ 12,705,405 $ 12,383,596

Quarterly Results of Operatio_2

Quarterly Results of Operations (Unaudited) (Tables)	12 Months Ended
Quarterly Results of Operations (Unaudited) (Tables)	Dec. 31, 2019
Quarterly Results of Operations (Unaudited) [Abstract]
Summary of Quarterly Results of Operations	Essex Property Trust, Inc. The following is a summary of quarterly results of operations for 2019 and 2018 ( $ in thousands, except per share and dividend amounts ): Quarter ended December 31 Quarter ended September 30 Quarter ended June 30 Quarter ended March 31 2019: Total property revenues $ 372,861 $ 364,504 $ 359,375 $ 353,888 Net income $ 135,182 $ 105,700 $ 98,061 $ 125,505 Net income available to common stockholders $ 128,818 $ 99,335 $ 92,275 $ 118,858 Per share data: Net income: Basic (1) $ 1.95 $ 1.51 $ 1.40 $ 1.81 Diluted (1) $ 1.95 $ 1.51 $ 1.40 $ 1.81 Dividends declared $ 1.95 $ 1.95 $ 1.95 $ 1.95 2018: Total property revenues $ 350,787 $ 348,610 $ 346,526 $ 344,947 Net income $ 124,440 $ 86,110 $ 106,410 $ 96,639 Net income available to common stockholders $ 117,820 $ 80,975 $ 100,440 $ 90,918 Per share data: Net income: Basic (1) $ 1.78 $ 1.23 $ 1.52 $ 1.38 Diluted (1) $ 1.78 $ 1.22 $ 1.52 $ 1.38 Dividends declared $ 1.86 $ 1.86 $ 1.86 $ 1.86 (1) Quarterly earnings per common share amounts may not total to the annual amounts due to rounding and the changes in the number of weighted common shares outstanding and included in the calculation of basic and diluted shares.
Essex Portfolio, L.P.
Quarterly Results of Operations (Unaudited) [Abstract]
Summary of Quarterly Results of Operations	Essex Portfolio, L.P. The following is a summary of quarterly results of operations for 2019 and 2018 ( $ in thousands, except per unit and distribution amounts ): Quarter ended December 31 Quarter ended September 30 Quarter ended June 30 Quarter ended March 31 2019: Total property revenues $ 372,861 $ 364,504 $ 359,375 $ 353,888 Net income $ 135,182 $ 105,700 $ 98,061 $ 125,505 Net income available to common unitholders $ 133,298 $ 102,799 $ 95,503 $ 123,029 Per unit data: Net income: Basic (1) $ 1.95 $ 1.51 $ 1.40 $ 1.81 Diluted (1) $ 1.95 $ 1.51 $ 1.40 $ 1.81 Distributions declared $ 1.95 $ 1.95 $ 1.95 $ 1.95 2018: Total property revenues $ 350,787 $ 348,610 $ 346,526 $ 344,947 Net income $ 124,440 $ 86,110 $ 106,410 $ 96,639 Net income available to common unitholders $ 121,891 $ 83,764 $ 103,900 $ 94,050 Per unit data: Net income: Basic (1) $ 1.78 $ 1.23 $ 1.52 $ 1.38 Diluted (1) $ 1.78 $ 1.23 $ 1.52 $ 1.38 Distributions declared $ 1.86 $ 1.86 $ 1.86 $ 1.86 (1) Quarterly earnings per common unit amounts may not total to the annual amounts due to rounding and the changes in the number of weighted common units outstanding and included in the calculation of basic and diluted units.

Organization (Details)

Organization (Details) $ in Millions	12 Months Ended
Organization (Details) $ in Millions	Dec. 31, 2019USD ($)communitybuildinginvestmentapartmentprojectshares	Dec. 31, 2018USD ($)shares
Organization, Consolidation and Presentation of Financial Statements [Abstract]
General partner ownership interest	96.60%	96.60%
Limited partner - ownership percentage	3.40%	3.40%
Operating Partnership units outstanding (in shares) \| shares	2,301,653	2,305,389
Redemption value of operating partnership units outstanding \| $	$ 692.5	$ 565.3
Number of apartment communities owned \| community	250
Number of apartment units owned \| apartment	60,570
Ownership interests, number of commercial buildings \| building	1
Ownership interests, number of consolidated projects \| project	5
Ownership Interests, number of unconsolidated projects \| investment	2

Summary of Critical and Signi_4

Summary of Critical and Significant Accounting Policies (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2019USD ($)communityinvestmentpartnershipshares	Dec. 31, 2018USD ($)communityinvestmentpartnershipshares	Dec. 31, 2017USD ($)	Jan. 01, 2019USD ($)	Dec. 31, 2016USD ($)
Property, Plant and Equipment [Line Items]
Noncontrolling interest in operating partnership	3.40%	3.40%
Real Estate Rental Properties [Abstract]
Minimum threshold useful life of assets for capitalization	1 year
Depreciable life of various categories of fixed assets [Abstract]
Acquired in-place lease value, net	$ 1,200	$ 100
Number of communities held-for-sale \| community	0	0
Asset impairment charges	$ 7,105	$ 0	$ 0
Other-than-temporary impairment	$ 11,500
Revenues and Gains on Sale of Real Estate [Abstract]
Lease terms, minimum	9 months
Lease terms, maximum	12 months
Cash Equivalents and Restricted Cash [Abstract]
Original maturities of highly liquid investments to be classified as cash equivalents, maximum	3 months
Cash and cash equivalents - unrestricted	$ 70,087	134,465	44,620
Cash and cash equivalents - restricted	11,007	16,930	16,506
Total unrestricted and restricted cash and cash equivalents shown in the consolidated statements of cash flows	81,094	151,395	61,126		$ 170,302
Capitalization
Capitalized internal costs related to development and redevelopment projects	17,900	18,600	18,800
Fair Value of Financial Instruments
Fixed rate debt carrying amount	5,200,000	5,000,000
Fixed rate debt fair value	5,400,000	5,000,000
Variable rate debt carrying amount	660,400	619,600
Variable rate debt fair value	655,800	615,200
Mortgage-backed-securities available-for-sale fair value	$ 72,700	$ 129,500
Investments, Owned, Federal Income Tax Note [Line Items]
Tax cuts and jobs act of 2017, change in tax rate			1,500
Status of cash dividends distributed
Number of DownREIT limited partnerships \| partnership	17	16
Number of communities in DownREIT Partnerships \| community	9	8
Number of consolidated co-investments that now meet the definition of a VIE \| investment	6	8
Assets related to VIE, net intercompany eliminations	$ 1,000,000	$ 849,800
Liabilities related to VIE, net intercompany eliminations	364,300	261,700
Noncontrolling interests in VIE	$ 122,500	$ 64,500
Total DownREIT units outstanding (in shares) \| shares	1,033,907	912,269
Redemption value of the variable interest entities	$ 311,100	$ 223,700
Redeemable noncontrolling interest	37,410	35,475	$ 39,206		$ 44,684
Redeemable noncontrolling interest, units of limited partners' interests in DownREIT VIEs	13,000	14,500
Noncontrolling interest in limited partnerships	97,700	$ 32,400
CPPIB
Depreciable life of various categories of fixed assets [Abstract]
Asset impairment charges	$ 7,105
Equity method investment, ownership percentage	45.00%
Computer Software and Equipment \| Minimum
Depreciable life of various categories of fixed assets [Abstract]
Depreciable life, average	3 years
Computer Software and Equipment \| Maximum
Depreciable life of various categories of fixed assets [Abstract]
Depreciable life, average	5 years
Interior Apartment Home Improvements
Depreciable life of various categories of fixed assets [Abstract]
Depreciable life, average	5 years
Furniture, Fixtures and Equipment \| Minimum
Depreciable life of various categories of fixed assets [Abstract]
Depreciable life, average	5 years
Furniture, Fixtures and Equipment \| Maximum
Depreciable life of various categories of fixed assets [Abstract]
Depreciable life, average	10 years
Land Improvements and Certain Exterior Components of Real Property
Depreciable life of various categories of fixed assets [Abstract]
Depreciable life, average	10 years
Real Estate Structures
Depreciable life of various categories of fixed assets [Abstract]
Depreciable life, average	30 years
Accounting Standards Update 2017-12
Property, Plant and Equipment [Line Items]
Accumulated other comprehensive loss				$ 200
Common Stock
Status of cash dividends distributed
Ordinary income	83.81%	79.72%	84.04%
Capital gain	13.78%	15.35%	13.20%
Unrecaptured section 1250 capital gain	2.41%	4.93%	2.76%
Total cash dividends distributed, percentage	100.00%	100.00%	100.00%
Mortgage Backed Securities
Fair Value of Financial Instruments
Mortgage-backed-securities held-to-maturity carrying value	$ 72,651	$ 127,187

Summary of Critical and Signi_5

Summary of Critical and Significant Accounting Policies - Marketable Securities (Details) - USD ($) $ in Thousands	1 Months Ended	12 Months Ended
	Nov. 30, 2019	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Marketable Securities [Line Items]
Carrying Value		$ 3,600	$ 6,700
Equity securities:
Unrealized gain (loss) on equity securities recognized through income		5,710	(5,159)	$ 0
Carrying Value		3,600	6,700
Debt Securities, Held-to-maturity, Fair Value to Amortized Cost [Abstract]
Total - Marketable securities, amortized cost		140,649	211,960
Total - Marketable securities, gross unrealized gain (loss)		3,544	(2,415)
Total - Marketable securities, carrying value		144,193	209,545
Proceeds from maturity of mortgage backed security	$ 83,100
Accelerated interest income	$ 7,000
Proceeds from sale and maturities of marketable securities		147,500	31,500	35,500
Marketable securities, realized gain (loss)		1,300	700	1,900
Unrealized gain (loss) on equity securities recognized through income		5,710	(5,159)	$ 0
Interest and Other Income
Equity securities:
Unrealized gain (loss) on equity securities recognized through income		5,700	(5,200)
Debt Securities, Held-to-maturity, Fair Value to Amortized Cost [Abstract]
Unrealized gain (loss) on equity securities recognized through income		5,700	(5,200)
Investment Funds - Debt Securities
Marketable Securities [Line Items]
Carrying Value		30,132	31,366
Equity securities:
Amortized Cost		29,588	31,934
Unrealized gain (loss) on equity securities recognized through income		544	(568)
Carrying Value		30,132	31,366
Debt Securities, Held-to-maturity, Fair Value to Amortized Cost [Abstract]
Unrealized gain (loss) on equity securities recognized through income		544	(568)
Common Stock and Stock Funds
Marketable Securities [Line Items]
Carrying Value		37,868	38,060
Equity securities:
Amortized Cost		34,941	39,731
Unrealized gain (loss) on equity securities recognized through income		2,927	(1,671)
Carrying Value		37,868	38,060
Debt Securities, Held-to-maturity, Fair Value to Amortized Cost [Abstract]
Unrealized gain (loss) on equity securities recognized through income		2,927	(1,671)
U.S. Treasury Securities
Debt Securities, Held-to-maturity, Fair Value to Amortized Cost [Abstract]
Available-for-sale, amortized cost		2,421	8,983
Available-for-sale, gross unrealized gain (Loss)		13	(31)
Available-for-sale, carrying value		2,434	8,952
Investment-Grade Unsecured Bonds
Debt Securities, Held-to-maturity, Fair Value to Amortized Cost [Abstract]
Available-for-sale, amortized cost		1,048	4,125
Available-for-sale, gross unrealized gain (Loss)		60	(145)
Available-for-sale, carrying value		1,108	3,980
Mortgage Backed Securities
Debt Securities, Held-to-maturity, Fair Value to Amortized Cost [Abstract]
Held to maturity, amortized cost		72,651	127,187
Held to maturity, gross unrealized gain (loss)		0	0
Held to maturity carrying value		$ 72,651	$ 127,187

Summary of Critical and Signi_6

Summary of Critical and Significant Accounting Policies - AOCI (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Jan. 01, 2019
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at December 31, 2018	$ 6,267,073
Other comprehensive income before reclassification	8,108
Amounts reclassified from accumulated other comprehensive loss	(8,954)
Other comprehensive income (loss)	(671)
Balance at December 31, 2019	6,220,427
Change in Fair Value and Amortization of Swap Agreements
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at December 31, 2018	(13,077)
Cumulative effect upon adoption of ASU No. 2017-12		$ 175
Other comprehensive income before reclassification	7,836
Amounts reclassified from accumulated other comprehensive loss	(8,923)
Other comprehensive income (loss)	(912)
Balance at December 31, 2019	(13,989)
Unrealized Gains on Available for Sale Securities
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at December 31, 2018	(140)
Cumulative effect upon adoption of ASU No. 2017-12		0
Other comprehensive income before reclassification	272
Amounts reclassified from accumulated other comprehensive loss	(31)
Other comprehensive income (loss)	241
Balance at December 31, 2019	101
Accumulated Other Comprehensive Loss, Net
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at December 31, 2018	(13,217)
Cumulative effect upon adoption of ASU No. 2017-12		175
Balance at December 31, 2019	(13,888)
Essex Portfolio, L.P.
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Other comprehensive income before reclassification	8,392
Amounts reclassified from accumulated other comprehensive loss	(9,267)
Other comprehensive income (loss)	(694)
Essex Portfolio, L.P. \| Change in Fair Value and Amortization of Swap Agreements
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at December 31, 2018	(9,593)
Cumulative effect upon adoption of ASU No. 2017-12		181
Other comprehensive income before reclassification	8,111
Amounts reclassified from accumulated other comprehensive loss	(9,235)
Other comprehensive income (loss)	(943)
Balance at December 31, 2019	(10,536)
Essex Portfolio, L.P. \| Unrealized Gains on Available for Sale Securities
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at December 31, 2018	(145)
Cumulative effect upon adoption of ASU No. 2017-12		0
Other comprehensive income before reclassification	281
Amounts reclassified from accumulated other comprehensive loss	(32)
Other comprehensive income (loss)	249
Balance at December 31, 2019	104
Essex Portfolio, L.P. \| Accumulated Other Comprehensive Loss, Net
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at December 31, 2018	(9,738)
Cumulative effect upon adoption of ASU No. 2017-12		$ 181
Balance at December 31, 2019	$ (10,432)

Summary of Critical and Signi_7

Summary of Critical and Significant Accounting Policies - Redeemable Noncontrolling Interests (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Accounting Policies [Abstract]
Redeemable noncontrolling interest	$ 35,475	$ 39,206	$ 39,206
Stockholders' Equity Attributable to Noncontrolling Interest [Roll Forward]
Balance at January 1,	35,475	39,206	44,684
Reclassifications due to change in redemption value and other	2,008	1,164	65
Redemptions	(73)	(4,895)	(5,543)
Balance at December 31,	$ 37,410	$ 35,475	$ 39,206

Real Estate Investments - Acqui

Real Estate Investments - Acquisitions and Sales Of Real Estate (Details)	1 Months Ended			3 Months Ended				12 Months Ended
	Dec. 31, 2019USD ($)unit	Jun. 30, 2019USD ($)	Mar. 31, 2019USD ($)	Dec. 31, 2019USD ($)unit	Sep. 30, 2019USD ($)unit	Jun. 30, 2019USD ($)unit	Mar. 31, 2019USD ($)unit	Dec. 31, 2019USD ($)communityunit	Dec. 31, 2018USD ($)communityunit
Schedule of Equity Method Investments [Line Items]
Number of units acquired \| unit								849
Purchase Price								$ 373,300,000	$ 35,400,000
Investment in real estate	$ 14,038,142,000			$ 14,038,142,000				14,038,142,000
Encumbrance	990,667,000			990,667,000				990,667,000
Land and Land Improvements
Schedule of Equity Method Investments [Line Items]
Purchase Price								72,400,000
Building and Improvements
Schedule of Equity Method Investments [Line Items]
Purchase Price								402,400,000
Prepaid Expenses and Other Assets
Schedule of Equity Method Investments [Line Items]
Purchase Price								3,300,000
Mortgage Notes Payable
Schedule of Equity Method Investments [Line Items]
Purchase Price								149,000,000
One South Market
Schedule of Equity Method Investments [Line Items]
Limited partnership interest			45.00%
Investment in real estate			$ 179,000,000				$ 179,000,000
Encumbrance			$ 86,000,000				$ 86,000,000
Brio
Schedule of Equity Method Investments [Line Items]
Purchase Price		$ 164,900,000
Encumbrance		$ 98,700,000				$ 98,700,000
Hidden Valley
Schedule of Equity Method Investments [Line Items]
Purchase Price	$ 24,200,000
Limited partnership interest	25.00%
Investment in real estate	$ 97,000,000			97,000,000				97,000,000
Encumbrance	$ 29,700,000			$ 29,700,000				$ 29,700,000
Apartment Building
Schedule of Equity Method Investments [Line Items]
Number of communities acquired \| community								4	1
Number of units acquired \| unit								849	166
Apartment Building \| One South Market
Schedule of Equity Method Investments [Line Items]
Number of units acquired \| unit							312
Essex Ownership Percentage			100.00%				100.00%
Purchase Price							$ 80,600,000
Apartment Building \| Brio
Schedule of Equity Method Investments [Line Items]
Number of units acquired \| unit						300
Purchase Price						$ 164,900,000
Apartment Building \| Township
Schedule of Equity Method Investments [Line Items]
Number of units acquired \| unit					132
Essex Ownership Percentage					100.00%
Purchase Price					$ 88,700,000
Apartment Building \| Pure Redmond
Schedule of Equity Method Investments [Line Items]
Number of units acquired \| unit				105
Essex Ownership Percentage	100.00%			100.00%				100.00%
Purchase Price				$ 39,100,000
Apartment Building \| Hidden Valley
Schedule of Equity Method Investments [Line Items]
Number of units acquired \| unit	324

Real Estate Investments - Sales

Real Estate Investments - Sales of Real Estate Investments (Details) $ in Millions	12 Months Ended
	Dec. 31, 2019USD ($)	Dec. 31, 2018USD ($)communityunit	Dec. 31, 2017USD ($)communityunit
Communities Sold in 2019 \| Santa Mateo, CA
Real Estate Properties [Line Items]
Gain (loss) on sale of properties	$ (3.2)
Communities Sold in 2019 \| Rental and Other Property \| Santa Clara, CA
Real Estate Properties [Line Items]
Total property revenues	10.8
Communities Sold in 2019 \| Rental and Other Property \| Santa Mateo, CA
Real Estate Properties [Line Items]
Total property revenues	$ 12.5
Communities Sold in 2018
Real Estate Properties [Line Items]
Number of communities sold \| community		2
Number of units sold \| unit		669
Gain (loss) on sale of properties		$ 61.9
Communities Sold in 2018 \| Rental and Other Property
Real Estate Properties [Line Items]
Total property revenues		$ 352
Communities Sold in 2017
Real Estate Properties [Line Items]
Number of communities sold \| community			1
Number of units sold \| unit			270
Gain (loss) on sale of properties			$ 26.2
Communities Sold in 2017 \| Rental and Other Property
Real Estate Properties [Line Items]
Total property revenues			$ 132.5

Real Estate Investments - Co-In

Real Estate Investments - Co-Investments (Details)	1 Months Ended				12 Months Ended
Real Estate Investments - Co-Investments (Details)	Dec. 31, 2019USD ($)	Nov. 30, 2019USD ($)apartment	Oct. 31, 2019USD ($)apartment	Aug. 31, 2019USD ($)apartment	Dec. 31, 2019USD ($)unit	Dec. 31, 2018USD ($)	Dec. 31, 2017USD ($)	Dec. 01, 2019	Aug. 01, 2019
Business Acquisition [Line Items]
Promote interest earned				$ 52,200,000
Number of units acquired \| unit					849
Purchase price					$ 373,300,000	$ 35,400,000
Debt assumed in connection with acquisition					143,006,000	45,804,000	$ 51,882,000
Investments in (distributions in excess of investments in) and advance to affiliates, subsidiaries, associates and joint ventures	$ 1,335,339,000				1,335,339,000	1,300,140,000
Membership Combined Balance Sheets [Abstract]
Rental properties and real estate under development	546,075,000				546,075,000	454,629,000
Other liabilities	36,565,000				36,565,000	33,375,000
Membership Combined Statements Of Income [Abstract]
Interest expense					(217,339,000)	(220,492,000)	(222,894,000)
General and administrative					(54,262,000)	(53,451,000)	(41,385,000)
Equity income from co-investments					112,136,000	89,132,000	86,445,000
Investments with Related Parties
Membership Combined Statements Of Income [Abstract]
Equity income from co-investments					$ 7,500,000	2,000,000	1,900,000
BEX IV
Business Acquisition [Line Items]
Ownership percentage				50.10%
Debt assumed in connection with acquisition	44,400,000
BEX IV, LLC (BEX IV), Menlo Park
Business Acquisition [Line Items]
Number of units acquired \| apartment				195
Purchase price				$ 148,000,000
Debt assumed in connection with acquisition				$ 44,400,000
Wesco V, LLC (Wesco V), Emeryville
Business Acquisition [Line Items]
Number of units acquired \| apartment				331
Purchase price				$ 178,000,000
Debt assumed in connection with acquisition	89,000,000			$ 89,000,000
Canadian Pension Plan Investment Board (CPPIB or CPP), San Francisco, CA
Business Acquisition [Line Items]
Ownership percentage			55.00%
Number of units acquired \| apartment			463
Gain on sale of properties			$ 50,200,000
Canadian Pension Plan Investment Board (CPPIB or CPP), San Francisco, CA \| Rental and Other Property
Business Acquisition [Line Items]
Total property revenues			$ 311,000,000
Velo & Ray Apartments, Seattle, WA
Business Acquisition [Line Items]
Number of units acquired \| apartment		308
Purchase price		$ 133,000,000
Debt assumed in connection with acquisition		$ 85,500,000
CPPIB
Business Acquisition [Line Items]
Ownership percentage					55.00%
Investments in (distributions in excess of investments in) and advance to affiliates, subsidiaries, associates and joint ventures	345,466,000				$ 345,466,000	482,507,000
Wesco I, III, IV and V
Business Acquisition [Line Items]
Ownership percentage					51.00%
Investments in (distributions in excess of investments in) and advance to affiliates, subsidiaries, associates and joint ventures	216,756,000				$ 216,756,000	194,890,000
BEXAEW, BEX II, BEX III, and BEX IV
Business Acquisition [Line Items]
Ownership percentage					50.00%
Investments in (distributions in excess of investments in) and advance to affiliates, subsidiaries, associates and joint ventures	160,888,000				$ 160,888,000	121,780,000
Other
Business Acquisition [Line Items]
Ownership percentage					48.00%
Investments in (distributions in excess of investments in) and advance to affiliates, subsidiaries, associates and joint ventures	20,351,000				$ 20,351,000	34,093,000
Total Operating Co-investments
Business Acquisition [Line Items]
Investments in (distributions in excess of investments in) and advance to affiliates, subsidiaries, associates and joint ventures	743,461,000				$ 743,461,000	833,270,000
Total Development Co-Investments
Business Acquisition [Line Items]
Ownership percentage					50.00%
Investments in (distributions in excess of investments in) and advance to affiliates, subsidiaries, associates and joint ventures	146,944,000				$ 146,944,000	94,060,000
Total Preferred Interest Investments
Business Acquisition [Line Items]
Investments in (distributions in excess of investments in) and advance to affiliates, subsidiaries, associates and joint ventures	444,934,000				444,934,000	372,810,000
Total Preferred Interest Investments \| Investments in Majority-Owned Subsidiaries
Business Acquisition [Line Items]
Investments in (distributions in excess of investments in) and advance to affiliates, subsidiaries, associates and joint ventures	73,200,000				73,200,000	51,800,000
Total Co Investment
Membership Combined Balance Sheets [Abstract]
Rental properties and real estate under development	4,733,762,000				4,733,762,000	4,367,987,000
Other assets	139,562,000				139,562,000	104,119,000
Total assets	4,873,324,000				4,873,324,000	4,472,106,000
Debt	2,442,213,000				2,442,213,000	2,190,764,000
Other liabilities	117,160,000				117,160,000	106,316,000
Equity	2,313,951,000				2,313,951,000	2,175,026,000
Total liabilities and equity	4,873,324,000				4,873,324,000	4,472,106,000
Company's share of equity	$ 1,335,339,000				1,335,339,000	1,300,140,000
Membership Combined Statements Of Income [Abstract]
Property revenues					336,922,000	332,164,000	312,841,000
Property operating expenses					(115,658,000)	(107,584,000)	(110,583,000)
Net operating income					221,264,000	224,580,000	202,258,000
Gain on sale of real estate					112,918,000	24,218,000	90,663,000
Interest expense					(65,665,000)	(63,913,000)	(62,844,000)
General and administrative					(9,575,000)	(6,379,000)	(9,091,000)
Depreciation and amortization					(121,006,000)	(126,485,000)	(118,048,000)
Net income					137,936,000	52,021,000	102,938,000
Company's share of net income					$ 112,136,000	$ 89,132,000	$ 86,445,000
LIBOR Swap Rate \| BEX IV
Business Acquisition [Line Items]
Interest rate percentage								3.23%
LIBOR Swap Rate \| BEX IV, LLC (BEX IV), Menlo Park
Business Acquisition [Line Items]
Interest rate percentage									3.25%
LIBOR Swap Rate \| Wesco V, LLC (Wesco V), Emeryville
Business Acquisition [Line Items]
Interest rate percentage								1.30%	1.30%
LIBOR Swap Rate \| Velo & Ray Apartments, Seattle, WA
Business Acquisition [Line Items]
Interest rate percentage		1.30%

Real Estate Investments - Devel

Real Estate Investments - Development Co-Investments (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2017USD ($)unit	Dec. 31, 2019USD ($)unit	Dec. 31, 2018USD ($)unit	Dec. 31, 2015USD ($)unit
Real Estate Properties [Line Items]
Investments in (distributions in excess of investments in) and advance to affiliates, subsidiaries, associates and joint ventures		$ 1,335,339	$ 1,300,140
Number of units to be developed \| unit		1,960
Total Operating Co-investments
Real Estate Properties [Line Items]
Number of apartments owned through joint ventures \| unit		10,672	10,613
Investments in (distributions in excess of investments in) and advance to affiliates, subsidiaries, associates and joint ventures		$ 743,461	$ 833,270
Total Development Co-Investments
Real Estate Properties [Line Items]
Number of apartments owned through joint ventures \| unit		806	814
Investments in (distributions in excess of investments in) and advance to affiliates, subsidiaries, associates and joint ventures		$ 146,944	$ 94,060
Ohlone Multi-Family Community
Real Estate Properties [Line Items]
Number of units to be developed \| unit	269
Equity method investment, ownership percentage	50.00%
Estimated cost active development projects	$ 136,000
Commitment to fund preferred equity investment in the project	$ 28,900
Annualized preferred return rate	10.00%
Folsom 500
Real Estate Properties [Line Items]
Number of units to be developed \| unit				537
Equity method investment, ownership percentage				50.00%
Estimated cost active development projects				$ 415,000

Real Estate Investments - Prefe

Real Estate Investments - Preferred Equity Investments and Real Estate Under Development (Details) $ in Thousands	1 Months Ended					12 Months Ended
	Nov. 30, 2019USD ($)	Oct. 31, 2019USD ($)	Sep. 30, 2019USD ($)	Apr. 30, 2019USD ($)	Feb. 28, 2019USD ($)	Dec. 31, 2019USD ($)investmentunitproject	Dec. 31, 2018USD ($)investment
Schedule of Equity Method Investments [Line Items]
Co-investment						$ 1,335,339	$ 1,300,140
Ownership interests, number of consolidated projects \| project						5
Ownership Interests, number of unconsolidated projects \| investment						2
Number of units to be developed \| unit						1,960
Real Estate Predevelopment Projects
Schedule of Equity Method Investments [Line Items]
Actual cost of active development projects						$ 1,000,000
Minimum
Schedule of Equity Method Investments [Line Items]
Annualized preferred return rate						10.15%	10.25%
Maximum
Schedule of Equity Method Investments [Line Items]
Annualized preferred return rate						11.30%	12.00%
Equity Method Investments
Schedule of Equity Method Investments [Line Items]
Commitment to fund preferred equity investment in the project						$ 141,700	$ 45,100
Number of investments with a commitment to fund \| investment						5	2
Equity method investment, funded amount						$ 125,400	$ 41,100
Total Preferred Interest Investments
Schedule of Equity Method Investments [Line Items]
Co-investment						$ 444,900	$ 372,800
Joint Venture that Holds Property San Jose, CA
Schedule of Equity Method Investments [Line Items]
Full redemption of a preferred equity investment					$ 10,900
Early redemption fee					$ 100
Joint Venture that Holds Property in Santa Ana, California
Schedule of Equity Method Investments [Line Items]
Full redemption of a preferred equity investment				$ 16,300
Early redemption fee				$ 700
Redmond, WA
Schedule of Equity Method Investments [Line Items]
Full redemption of a preferred equity investment			$ 14,800
Early redemption fee			300
Seattle, WA
Schedule of Equity Method Investments [Line Items]
Full redemption of a preferred equity investment			16,300
Early redemption fee			$ 1,400
San Jose, CA
Schedule of Equity Method Investments [Line Items]
Full redemption of a preferred equity investment		$ 15,800
Early redemption fee		$ 200
Bellevue, WA
Schedule of Equity Method Investments [Line Items]
Full redemption of a preferred equity investment	$ 16,000
Early redemption fee	$ 900

Revenues - (Details)

Revenues - (Details) - USD ($) $ in Thousands	12 Months Ended
Revenues - (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Disaggregation of Revenue [Line Items]
Rental and other property	$ 1,450,628	$ 1,390,870	$ 1,354,325
Total revenues	1,460,155	1,400,053	1,363,899
Rental
Disaggregation of Revenue [Line Items]
Rental and other property	1,425,585	1,366,590	1,326,464
Other Property Leasing Revenue
Disaggregation of Revenue [Line Items]
Rental and other property	25,043	24,280	27,861
Management and Other Fees from Affiliates
Disaggregation of Revenue [Line Items]
Management and other fees from affiliates	9,527	9,183	9,574
Rental and Other Property
Disaggregation of Revenue [Line Items]
Rental and other property	1,450,628	1,390,870	1,354,325
Rental and Other Property \| Same Property
Disaggregation of Revenue [Line Items]
Rental and other property	1,367,311	1,321,862	1,284,030
Rental and Other Property \| Acquisitions
Disaggregation of Revenue [Line Items]
Rental and other property	22,924	259	0
Rental and Other Property \| Development
Disaggregation of Revenue [Line Items]
Rental and other property	7,562	2,713	0
Rental and Other Property \| Redevelopment
Disaggregation of Revenue [Line Items]
Rental and other property	20,988	20,345	19,641
Rental and Other Property \| Non-Residential/Other, Net
Disaggregation of Revenue [Line Items]
Rental and other property	31,843	45,691	50,654
Rental and Other Property \| Operating Segments \| Southern California
Disaggregation of Revenue [Line Items]
Rental and other property	610,240	592,281	574,552
Rental and Other Property \| Operating Segments \| Northern California
Disaggregation of Revenue [Line Items]
Rental and other property	569,556	522,561	505,313
Rental and Other Property \| Operating Segments \| Seattle Metro
Disaggregation of Revenue [Line Items]
Rental and other property	245,476	236,525	229,871
Rental and Other Property \| Other Real Estate Assets
Disaggregation of Revenue [Line Items]
Rental and other property	$ 25,356	$ 39,503	$ 44,589
Minimum
Disaggregation of Revenue [Line Items]
Lease term	6 months

Revenues - Deferred Revenues an

Revenues - Deferred Revenues and Remaining Performance Obligations (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Revenue from Contract with Customer [Abstract]
Deferred revenue	$ 3.9	$ 6.2
Deferred revenue, revenue recognized	2.3
Deferred revenue balance from contracts with remaining performance obligations	$ 3.9
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2020-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Percentage of remaining performance obligations due per period	19.00%
Expected timing of performance obligation satisfaction, period	2 years
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Percentage of remaining performance obligations due per period	38.00%

Notes and Other Receivables (De

Notes and Other Receivables (Details) - USD ($) $ in Thousands	1 Months Ended		12 Months Ended
	Dec. 31, 2019	Oct. 31, 2019	Dec. 31, 2019	Dec. 31, 2018
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable	$ 134,365		$ 134,365	$ 71,895
Cash received from collection of note receivable	36,100	$ 6,700
Notes Receivable, Secured, Bearing Interest at 9.00%, Due May 2021
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable	16,828		$ 16,828	15,226
Stated interest rate			9.00%
Note Receivable, Secured, Bearing Interest at 10.75%, Due September 2020
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable	0		$ 0	32,650
Stated interest rate			10.75%
Notes Receivable, Secured, Bearing Interest at 9.90%, Due November 2021
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable	12,838		$ 12,838	0
Stated interest rate			9.90%
Related Party Note Receivable, Secured, Bearing Interest at 9.50%, Due October 2019
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable	0		$ 0	6,618
Interest rate			9.50%
Related Party Bridge Loan on Property Acquired by Bex Iv
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable	85,713		$ 85,713	0
Notes and Other Receivables from Affiliates
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable	4,442		4,442	4,457
Other Receivables
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable	$ 14,544		$ 14,544	$ 12,944

Related Party Transactions (Det

Related Party Transactions (Details)	1 Months Ended								8 Months Ended	12 Months Ended
Related Party Transactions (Details)	Nov. 30, 2019USD ($)	Aug. 31, 2019USD ($)	Jun. 30, 2019USD ($)apartment	Feb. 28, 2019USD ($)	Oct. 31, 2018USD ($)apartment	May 31, 2018USD ($)apartment	Nov. 30, 2017USD ($)	Mar. 31, 2017USD ($)unit	Dec. 31, 2018USD ($)	Dec. 31, 2019USD ($)unit	Dec. 31, 2018USD ($)	Dec. 31, 2017USD ($)	Dec. 31, 2015USD ($)investment	Nov. 30, 2016USD ($)
Related Party Transaction [Line Items]
Management and other fees from affiliates										$ 13,800,000	$ 13,900,000	$ 12,600,000
Revenues from development and redevelopment fees										4,300,000	4,800,000	3,000,000
Notes receivable									$ 71,895,000	$ 134,365,000	71,895,000
Number of units acquired \| unit										849
Purchase price										$ 373,300,000	35,400,000
Debt assumed in connection with acquisition										143,006,000	45,804,000	51,882,000
Payments to acquire equity method investments										402,284,000	162,437,000	293,363,000
Co-investments									1,300,140,000	1,335,339,000	1,300,140,000
Encumbrance										990,667,000
Redeemed equity method investment											5,000,000	5,000,000
Brio
Related Party Transaction [Line Items]
Number of units acquired \| apartment			300
Purchase price			$ 164,900,000
Debt assumed in connection with acquisition			$ 98,700,000
Apartment Home Community in Ventura, California
Related Party Transaction [Line Items]
Number of units acquired \| apartment						400
Annualized preferred return rate						10.25%
Preferred equity investment, commitment to fund						$ 26,500,000
Purchase commitment, funded amount									22,500,000
Membership Interest in Sage at Cupertino
Related Party Transaction [Line Items]
Number of units acquired \| unit								230
Co-investments								$ 15,300,000
Equity method investment, ownership percentage								40.50%
Contract price								$ 90,000,000
Encumbrance								$ 52,000,000
Notes and Other Receivables from Affiliates
Related Party Transaction [Line Items]
Notes receivable									4,500,000	4,400,000	4,500,000
Related Party Bridge Loan on Property Acquired by Bex Iv
Related Party Transaction [Line Items]
Notes receivable									$ 0	85,713,000	0
Marcus and Millichamp Company TMMC Affiliate \| Related Party Note Receivable, Secured, Bearing Interest at 9.5%, Due October 2019
Related Party Transaction [Line Items]
Notes receivable														$ 6,600,000
Affiliated Entity \| Multifamily Development in Mountain View, California
Related Party Transaction [Line Items]
Payments to acquire equity method investments				$ 24,500,000
Annualized preferred return rate				11.00%
Affiliated Entity \| Home Community Development in Burlingame, California
Related Party Transaction [Line Items]
Number of units acquired \| apartment					268
Payments to acquire equity method investments					$ 18,600,000
Annualized preferred return rate					12.00%
Affiliated Entity \| Related Party Bridge Loans on Property Acquired by Wesco V
Related Party Transaction [Line Items]
Notes receivable, related parties	$ 85,500,000	$ 89,000,000
Interest rate	1.30%	1.30%
Affiliated Entity \| Related Party Bridge Loan on Property Acquired by Bex Iv
Related Party Transaction [Line Items]
Notes receivable, related parties		$ 44,400,000
Interest rate		3.25%
Affiliated Entity \| Secured Note Receivable, 3.5% Interest Rate, Due March 9, 2018 \| BEX III
Related Party Transaction [Line Items]
Notes receivable, related parties							$ 29,500,000
Interest rate							3.50%
Limited Liability Company
Related Party Transaction [Line Items]
Payments to acquire equity method investments													$ 20,000,000
Number of equity method investments acquired during the period \| investment													3
Cumulative dividend rate													9.50%
Disposition of Multi-family Properties \| Marcus and Millichamp Company TMMC Affiliate
Related Party Transaction [Line Items]
Payments for brokerage fees										$ 0	$ 0	$ 0

Unsecured Debt - Summary (Detai

Unsecured Debt - Summary (Details)	12 Months Ended
Unsecured Debt - Summary (Details)	Dec. 31, 2019USD ($)line_of_credit	Dec. 31, 2018USD ($)	Nov. 30, 2016USD ($)	Oct. 31, 2016USD ($)
Debt Instrument [Line Items]
Unsecured debt, net	$ 4,763,206,000	$ 3,799,316,000
Lines of credit	55,000,000	0
Total unsecured debt	4,818,206,000	3,799,316,000
Unamortized debt issuance expense	$ 2,600,000	4,200,000
Number of outstanding lines of credit \| line_of_credit	2
Unsecured Bonds Private Placement - Fixed Rate
Debt Instrument [Line Items]
Unsecured debt, net	$ 199,820,000	$ 274,624,000
Weighted Average Maturity In Years	1 year 6 months
Term Loan - Variable Rate
Debt Instrument [Line Items]
Unsecured debt, net			$ 350,000,000	$ 225,000,000
Weighted average interest rate	2.70%	3.00%
Weighted Average Maturity In Years	2 months 3 days
Term Loan - Variable Rate \| Carrying Value
Debt Instrument [Line Items]
Unsecured debt, net	$ 349,189,000	$ 348,813,000
Bonds Public Offering - Fixed Rate
Debt Instrument [Line Items]
Unsecured debt, net	$ 4,214,197,000	$ 3,175,879,000
Weighted average interest rate	3.80%	3.90%
Weighted Average Maturity In Years	7 years 4 months 24 days
Unsecured Line of Credit
Debt Instrument [Line Items]
Lines of credit	$ 55,000,000	$ 0
Weighted average interest rate	2.50%	3.20%
Unsecured Debt
Debt Instrument [Line Items]
Debt instrument, unamortized premium	$ 12,200,000	$ 7,100,000
Unamortized debt issuance expense	24,500,000	18,500,000
Line of Credit
Debt Instrument [Line Items]
Maximum borrowing capacity	1,240,000,000
Unsecured Line of Credit \| Line of Credit
Debt Instrument [Line Items]
Lines of credit	55,000,000	0
Unamortized debt issuance expense	3,800,000	$ 3,900,000
Maximum borrowing capacity	$ 1,200,000,000

Unsecured Debt - Narrative (Det

Unsecured Debt - Narrative (Details)	1 Months Ended		3 Months Ended	12 Months Ended
Unsecured Debt - Narrative (Details)	Feb. 29, 2020USD ($)	Apr. 30, 2013USD ($)	Sep. 30, 2012USD ($)	Dec. 31, 2019USD ($)instrumentline_of_creditOption	Dec. 31, 2018USD ($)	Oct. 31, 2019USD ($)	Aug. 31, 2019USD ($)	Mar. 31, 2019USD ($)	Feb. 28, 2019USD ($)	Mar. 31, 2018USD ($)	Apr. 30, 2017USD ($)	Mar. 31, 2017USD ($)	Nov. 30, 2016USD ($)	Oct. 31, 2016USD ($)	Apr. 30, 2016	Mar. 31, 2015USD ($)	Apr. 30, 2014USD ($)
Debt Instrument [Line Items]
Senior notes				$ 200,000,000	$ 275,000,000
Effective interest rate				4.40%	4.50%
Unsecured debt, net				$ 4,763,206,000	$ 3,799,316,000
Debt instrument face amount				$ 4,250,000,000	3,200,000,000
Number of lines of credit \| line_of_credit				2
Lines of credit				$ 55,000,000	0
Unsecured Bonds 3.000%
Debt Instrument [Line Items]
Debt instrument face amount				550,000,000	0
Unsecured Bonds 4.000%
Debt Instrument [Line Items]
Debt instrument face amount				500,000,000	0
Unsecured Bonds 4.500%
Debt Instrument [Line Items]
Debt instrument face amount				300,000,000	300,000,000
Unsecured Bonds 3.625%
Debt Instrument [Line Items]
Debt instrument face amount				350,000,000	350,000,000
Unsecured Bonds 3.375%, Due April 2026
Debt Instrument [Line Items]
Debt instrument face amount				450,000,000	450,000,000
Unsecured Bonds 5.200%
Debt Instrument [Line Items]
Debt instrument face amount				300,000,000	300,000,000
Unsecured Bonds 3.375%
Debt Instrument [Line Items]
Debt instrument face amount				300,000,000	300,000,000
Unsecured Bonds 3.875%
Debt Instrument [Line Items]
Debt instrument face amount				400,000,000	400,000,000
Unsecured Bonds 3.250%
Debt Instrument [Line Items]
Debt instrument face amount				300,000,000	300,000,000
Unsecured Bonds 3.625%
Debt Instrument [Line Items]
Debt instrument face amount				$ 300,000,000	$ 300,000,000
Unsecured Line of Credit
Debt Instrument [Line Items]
Weighted average interest rate				2.50%	3.20%
Lines of credit				$ 55,000,000	$ 0
Unsecured Line of Credit \| Line of Credit Working Capital
Debt Instrument [Line Items]
Lines of credit				$ 0	$ 0
Variable Rate Term Loan
Debt Instrument [Line Items]
Unsecured debt, net													$ 350,000,000	$ 225,000,000
Weighted average interest rate				2.70%	3.00%
Basis spread on rate				0.95%
Variable Rate Term Loan \| Carrying Value
Debt Instrument [Line Items]
Unsecured debt, net				$ 349,189,000	$ 348,813,000
Senior Notes \| BRE Properties, Inc.
Debt Instrument [Line Items]
Unsecured debt, net				599,400,000	601,300,000
Long-term debt acquired																	$ 900,000,000
Senior Notes \| Unsecured Bonds 3.000%
Debt Instrument [Line Items]
Unsecured debt, net				$ 542,300,000
Debt instrument face amount						$ 150,000,000	$ 400,000,000
Coupon rate				3.00%			3.00%
Debt offering price						101.685%	98.632%
Senior Notes \| Unsecured Bonds 4.000%
Debt Instrument [Line Items]
Unsecured debt, net				$ 494,100,000
Debt instrument face amount								$ 150,000,000	$ 350,000,000
Coupon rate				4.00%					4.00%
Debt offering price								100.717%	99.188%
Senior Notes \| Unsecured Bonds 4.500%
Debt Instrument [Line Items]
Unsecured debt, net				$ 295,600,000	295,400,000
Debt instrument face amount										$ 300,000,000
Coupon rate				4.50%						4.50%
Debt offering price										99.591%
Senior Notes \| Unsecured Bonds 3.625%
Debt Instrument [Line Items]
Unsecured debt, net				$ 346,300,000	345,800,000
Debt instrument face amount											$ 350,000,000
Coupon rate				3.625%
Debt offering price											99.423%
Senior Notes \| Unsecured Bonds 3.375%, Due April 2026
Debt Instrument [Line Items]
Unsecured debt, net				$ 445,700,000	445,000,000
Coupon rate				3.375%
Debt offering price															99.386%
Senior Notes \| Unsecured Bonds 5.500%
Debt Instrument [Line Items]
Coupon rate																	5.50%
Face amount of debt paid off												$ 300,000,000
Senior Notes \| Unsecured Bonds 5.200%
Debt Instrument [Line Items]
Coupon rate				5.20%
Senior Notes \| Unsecured Bonds 3.375%
Debt Instrument [Line Items]
Coupon rate				3.375%
Senior Notes \| Unsecured Bonds 3.875%
Debt Instrument [Line Items]
Unsecured debt, net				$ 397,100,000	396,500,000
Debt instrument face amount																	$ 400,000,000
Coupon rate				3.875%													3.875%
Debt offering price																	99.234%
Senior Notes \| Unsecured Bonds 3.250%
Debt Instrument [Line Items]
Coupon rate		3.25%		3.25%
Debt offering price		99.152%
Proceeds from issuance of unsecured debt		$ 300,000,000
Long-term debt, gross				$ 298,200,000	297,600,000
Senior Notes \| Unsecured Bonds 3.625%
Debt Instrument [Line Items]
Coupon rate			3.625%	3.625%
Debt offering price			98.99%
Proceeds from issuance of unsecured debt			$ 300,000,000
Long-term debt, gross				$ 298,400,000	297,800,000
Unsecured Debt \| Senior Unsecured Notes Maturing April 1, 2025
Debt Instrument [Line Items]
Senior notes				497,100,000	496,500,000
Debt instrument face amount																$ 500,000,000
Coupon rate																3.50%
Debt offering price																99.747%
Line of Credit
Debt Instrument [Line Items]
Maximum borrowing capacity				1,240,000,000
Line of Credit \| Line of Credit Working Capital
Debt Instrument [Line Items]
Maximum borrowing capacity				35,000,000
Line of Credit \| Unsecured Line of Credit
Debt Instrument [Line Items]
Maximum borrowing capacity				1,200,000,000
Lines of credit				$ 55,000,000	$ 0
Number of extension options \| Option				1
Term extension period				18 months
Line of Credit \| Unsecured Line of Credit \| LIBOR
Debt Instrument [Line Items]
Basis spread on rate				0.825%	0.825%
Line of Credit \| Working Capital Unsecured Line of Credit
Debt Instrument [Line Items]
Maximum borrowing capacity				$ 35,000,000
Interest Rate Swap \| Variable Rate Term Loan
Debt Instrument [Line Items]
Unsecured debt, net				$ 350,000,000	$ 350,000,000
Number of derivative instruments held \| instrument				5
Term of loan				5 years
Interest Rate Swap \| Variable Rate Term Loan \| Variable Term Loan, Tranche One
Debt Instrument [Line Items]
Derivative notional amount				$ 175,000,000
Derivative, fixed interest rate				2.30%
Subsequent Event \| Senior Notes \| Unsecured Bonds 2.650%
Debt Instrument [Line Items]
Coupon rate	2.65%
Proceeds from issuance of unsecured debt	$ 500,000,000

Unsecured Debt - Unsecured Priv

Unsecured Debt - Unsecured Private Placement Bonds (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Debt Instrument [Line Items]
Senior notes	$ 200,000	$ 275,000
Unsecured Bonds 4.92%
Debt Instrument [Line Items]
Maturity	Dec. 31, 2019
Senior notes	$ 0	75,000
Coupon Rate	4.92%
Unsecured Bonds 4.27%
Debt Instrument [Line Items]
Maturity	Apr. 30, 2021
Senior notes	$ 100,000	100,000
Coupon Rate	4.27%
Unsecured Bonds 4.30%
Debt Instrument [Line Items]
Maturity	Jun. 30, 2021
Senior notes	$ 50,000	50,000
Coupon Rate	4.30%
Unsecured Bonds 4.37%
Debt Instrument [Line Items]
Maturity	Aug. 31, 2021
Senior notes	$ 50,000	$ 50,000
Coupon Rate	4.37%

Unsecured Debt - Senior Unsecur

Unsecured Debt - Senior Unsecured Notes (Details) - USD ($)	Dec. 31, 2019	Oct. 31, 2019	Aug. 31, 2019	Mar. 31, 2019	Feb. 28, 2019	Dec. 31, 2018	Mar. 31, 2018	Apr. 30, 2017	Apr. 30, 2014	Apr. 30, 2013	Sep. 30, 2012
Debt Instrument [Line Items]
Debt instrument face amount	$ 4,250,000,000					$ 3,200,000,000
Unsecured Bonds 5.200%
Debt Instrument [Line Items]
Debt instrument face amount	$ 300,000,000					300,000,000
Unsecured Bonds 5.200% \| Senior Notes
Debt Instrument [Line Items]
Coupon Rate	5.20%
Unsecured Bonds 3.625%
Debt Instrument [Line Items]
Debt instrument face amount	$ 300,000,000					300,000,000
Unsecured Bonds 3.625% \| Senior Notes
Debt Instrument [Line Items]
Coupon Rate	3.625%										3.625%
Unsecured Bonds 3.375%
Debt Instrument [Line Items]
Debt instrument face amount	$ 300,000,000					300,000,000
Unsecured Bonds 3.375% \| Senior Notes
Debt Instrument [Line Items]
Coupon Rate	3.375%
Unsecured Bonds 3.250%
Debt Instrument [Line Items]
Debt instrument face amount	$ 300,000,000					300,000,000
Unsecured Bonds 3.250% \| Senior Notes
Debt Instrument [Line Items]
Coupon Rate	3.25%									3.25%
Unsecured Bonds 3.875%
Debt Instrument [Line Items]
Debt instrument face amount	$ 400,000,000					400,000,000
Unsecured Bonds 3.875% \| Senior Notes
Debt Instrument [Line Items]
Debt instrument face amount									$ 400,000,000
Coupon Rate	3.875%								3.875%
Unsecured Bonds 3.500%
Debt Instrument [Line Items]
Debt instrument face amount	$ 500,000,000					500,000,000
Unsecured Bonds 3.500% \| Senior Notes
Debt Instrument [Line Items]
Coupon Rate	3.50%
Unsecured Bonds 3.375%
Debt Instrument [Line Items]
Debt instrument face amount	$ 450,000,000					450,000,000
Unsecured Bonds 3.375% \| Senior Notes
Debt Instrument [Line Items]
Coupon Rate	3.375%
Unsecured Bonds 3.625%
Debt Instrument [Line Items]
Debt instrument face amount	$ 350,000,000					350,000,000
Unsecured Bonds 3.625% \| Senior Notes
Debt Instrument [Line Items]
Debt instrument face amount								$ 350,000,000
Coupon Rate	3.625%
Unsecured Bonds 4.000%
Debt Instrument [Line Items]
Debt instrument face amount	$ 500,000,000					0
Unsecured Bonds 4.000% \| Senior Notes
Debt Instrument [Line Items]
Debt instrument face amount				$ 150,000,000	$ 350,000,000
Coupon Rate	4.00%				4.00%
Unsecured Bonds 3.000%
Debt Instrument [Line Items]
Debt instrument face amount	$ 550,000,000					0
Unsecured Bonds 3.000% \| Senior Notes
Debt Instrument [Line Items]
Debt instrument face amount		$ 150,000,000	$ 400,000,000
Coupon Rate	3.00%		3.00%
Unsecured Bonds 4.500%
Debt Instrument [Line Items]
Debt instrument face amount	$ 300,000,000					$ 300,000,000
Unsecured Bonds 4.500% \| Senior Notes
Debt Instrument [Line Items]
Debt instrument face amount							$ 300,000,000
Coupon Rate	4.50%						4.50%

Unsecured Debt - Future Obligat

Unsecured Debt - Future Obligations (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Debt Instrument [Line Items]
Total Debt	$ 990,667	$ 1,806,626
Unsecured Debt
Debt Instrument [Line Items]
2020	0
2021	500,000
2022	650,000
2023	600,000
2024	400,000
Thereafter	2,650,000
Total Debt	$ 4,800,000

Mortgage Notes Payable (Details

Mortgage Notes Payable (Details)	12 Months Ended
Mortgage Notes Payable (Details)	Dec. 31, 2019USD ($)property	Dec. 31, 2018USD ($)property
Debt Instrument [Line Items]
Mortgage notes payable	$ 990,667,000	$ 1,806,626,000
Number of properties securing mortgage notes \| property	24	50
Weighted average interest rate	4.10%	4.30%
Unamortized debt issuance expense	$ 2,600,000	$ 4,200,000
Monthly interest expense	5,500,000
Monthly principal amortization	1,400,000
Mortgage notes payable, net	$ 990,667,000	$ 1,806,626,000
Repayment of debt before the scheduled maturity date, prepayment penalties	The prepayment penalty on the majority of the Company’s mortgage notes payable are computed by the greater of (a) 1% of the amount of the principal being prepaid or (b) the present value of the principal being prepaid multiplied by the difference between the interest rate of the mortgage note and the stated yield rate on a U.S. treasury security which generally has an equivalent remaining term as the mortgage note.
Minimum
Debt Instrument [Line Items]
Remaining terms	1 year	1 year
Maximum
Debt Instrument [Line Items]
Remaining terms	27 years	28 years
Fixed Rate Mortgage Notes Payable
Debt Instrument [Line Items]
Mortgage notes payable	$ 736,490,000	$ 1,538,488,000
Prepayment penalty, percent of principal prepaid	1.00%
Variable Rate Mortgage Notes Payable
Debt Instrument [Line Items]
Mortgage notes payable	$ 254,177,000	$ 268,138,000
Bond subject to interest rate caps	$ 255,400,000
Multifamily housing mortgage revenue bonds, variable interest rate (in hundredths)	2.30%	2.50%
Percentage of units subject to tenant income criteria (in hundredths)	20.00%
Variable Rate Mortgage Notes Payable \| Total Return Swap
Debt Instrument [Line Items]
Bond subject to interest rate caps	$ 9,900,000
Secured Debt
Debt Instrument [Line Items]
Mortgage notes payable	987,335,000
Debt instrument, unamortized premium	5,900,000	$ 14,900,000
Secured Deeds of Trust
Debt Instrument [Line Items]
Mortgage notes payable, net	$ 0	$ 0

Mortgage Notes Payable - Future

Mortgage Notes Payable - Future Maturities (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Debt Instrument [Line Items]
Total Debt	$ 990,667	$ 1,806,626
Secured Debt
Debt Instrument [Line Items]
2020	288,057
2021	31,653
2022	43,188
2023	2,945
2024	3,109
Thereafter	618,383
Total Debt	$ 987,335

Derivative Instruments and He_2

Derivative Instruments and Hedging Activities (Details)	1 Months Ended	12 Months Ended
Derivative Instruments and Hedging Activities (Details)	Nov. 30, 2016USD ($)	Dec. 31, 2019USD ($)instrument	Dec. 31, 2018USD ($)	Dec. 31, 2017USD ($)instrument	Dec. 31, 2016instrument	Oct. 31, 2016USD ($)
Derivative [Line Items]
Unsecured debt, net		$ 4,763,206,000	$ 3,799,316,000
Hedge ineffectiveness related to cash flow hedges		(2,948,000)
Total return swap income		8,446,000	8,707,000	$ 10,098,000
Designated as Hedging Instrument
Derivative [Line Items]
Hedge ineffectiveness related to cash flow hedges		(200,000)	(100,000)	100,000
Not Designated as Hedging Instrument
Derivative [Line Items]
Total return swap income		$ 8,400,000	8,700,000	$ 10,100,000
Interest Rate Swap \| Designated as Hedging Instrument
Derivative [Line Items]
Number of derivative instruments held \| instrument		5		1	4
Average fixed interest rate		2.30%
Derivative fair value		$ 1,000,000	5,800,000
Aggregate carrying value of the interest rate swap contracts		200,000	0
Interest Rate Cap \| Not Designated as Hedging Instrument
Derivative [Line Items]
Derivative notional amount		$ 0	9,900,000
Derivative fair value			0
Total Return Swap Callable \| Not Designated as Hedging Instrument
Derivative [Line Items]
Number of derivative instruments held \| instrument		4
Derivative notional amount		$ 255,400,000
Total Return Swap \| Not Designated as Hedging Instrument
Derivative [Line Items]
Derivative fair value		$ 0
Variable Rate Term Loan
Derivative [Line Items]
Unsecured debt, net	$ 350,000,000					$ 225,000,000
Debt instrument, term	5 years
Basis spread on rate		0.95%
Variable Rate Term Loan \| Interest Rate Swap
Derivative [Line Items]
Unsecured debt, net		$ 350,000,000	$ 350,000,000
Number of derivative instruments held \| instrument		5
Variable Rate Term Loan \| Interest Rate Swap \| Designated as Hedging Instrument
Derivative [Line Items]
Derivative notional amount		$ 175,000,000
Variable Rate Mortgage Notes Payable
Derivative [Line Items]
Bond subject to interest rate caps		255,400,000
Variable Rate Mortgage Notes Payable \| Total Return Swap
Derivative [Line Items]
Bond subject to interest rate caps		$ 9,900,000

Lease Agreements - Company as_5

Lease Agreements - Company as Lessor (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2019USD ($)building
Lessor, Lease, Description [Line Items]
Number of commercial buildings under lease agreements \| building	1
Future Minimum Rent
2020	$ 746,150
2021	17,986
2022	14,482
2023	13,302
2024	11,542
Thereafter	26,967
Operating leases	830,429
Future Minimum Rent (840)
2019	16,386
2020	15,842
2021	14,412
2022	13,324
2023	12,181
Thereafter	33,034
Total future minimum payments receivable	$ 105,179
Minimum
Lessor, Lease, Description [Line Items]
Short-term lease terms	9 months
Commercial lease terms	5 years
Maximum
Lessor, Lease, Description [Line Items]
Short-term lease terms	12 months
Commercial lease terms	20 years

Lease Agreements - Company as_6

Lease Agreements - Company as Lessee - Narrative and Components of Leases (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Lessee, Lease, Description [Line Items]
Office lease, renewal term	5 years
Operating lease right-of-use assets	$ 74,744	$ 0
Total leased assets	74,744
Operating lease liabilities	76,740
Total lease liabilities	76,740
Lease, Cost [Abstract]
Operating lease cost	6,745
Variable lease cost	783
Short-term lease cost	610
Sublease income	(436)
Total lease cost	7,702
Operating lease right-of-use assets
Lessee, Lease, Description [Line Items]
Operating lease right-of-use assets	74,744
Operating lease liabilities
Lessee, Lease, Description [Line Items]
Operating lease liabilities	$ 76,740
Minimum
Lessee, Lease, Description [Line Items]
Office lease term of contract	5 years
Ground lease term	20 years
Ground lease, renewal term	10 years
Maximum
Lessee, Lease, Description [Line Items]
Office lease term of contract	10 years
Ground lease term	85 years
Ground lease, renewal term	39 years

Lease Agreements - Company as_7

Lease Agreements - Company as Lessee - Maturity (Details) $ in Thousands	Dec. 31, 2019USD ($)
Leases [Abstract]
2020	$ 6,855
2021	6,877
2022	6,888
2023	6,860
2024	6,585
Thereafter	146,673
Total lease payments	180,738
Less: Imputed interest	(103,998)
Present Value of lease liabilities	$ 76,740

Lease Agreements - Company as_8

Lease Agreements - Company as Lessee - Additional Information (Details)	Dec. 31, 2019
Leases [Abstract]
Weighted-average of remaining lease terms (years)	39 years
Weighted-average of discount rates	4.99%

Lease Agreements - Company as_9

Lease Agreements - Company as Lessee - Maturity under 840 (Details) $ in Thousands	Dec. 31, 2018USD ($)
Leases [Abstract]
2019	$ 6,811
2020	6,855
2021	6,877
2022	6,888
2023	6,860
Thereafter	153,258
Total lease future minimum rent	$ 187,549

Equity Transactions (Details)

Equity Transactions (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Sep. 30, 2018
Class of Stock [Line Items]
Common stock, shares authorized (in shares)	670,000,000	670,000,000
Proceeds from issuance from common stock	$ 72,539	$ (919)	$ 89,055
General partner ownership interest	96.60%	96.60%
Redemption value of operating partnership units outstanding	$ 692,500	$ 565,300
ATM Program, 2018
Class of Stock [Line Items]
Common stock, shares authorized (in shares)	826,600,000			900,000,000
Sale of common stock, net (in shares)	228,271
Share issued, price per share (in dollars per share)	$ 321.56
Proceeds from issuance from common stock	$ 73,400
ATM Program, 2016
Class of Stock [Line Items]
Sale of common stock, net (in shares)			345,444
Share issued, price per share (in dollars per share)			$ 260.38
Proceeds from issuance from common stock			$ 89,900
Operating Partnership Units
Class of Stock [Line Items]
Number of shares outstanding	2,158,396	2,171,309
Long Term Incentive Plan 2014 Units
Class of Stock [Line Items]
Number of shares outstanding	143,257	134,080

Net Income Per Common Share a_3

Net Income Per Common Share and Net Income Per Common Unit (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Basic:
Net income available to common stockholders									$ 439,286	$ 390,153	$ 433,059
Income from continuing operations available to common stockholders (in shares)									65,840,422	66,041,058	65,829,155
Net income available to common stockholders/unitholders (in dollars per share)	$ 1.95	$ 1.51	$ 1.40	$ 1.81	$ 1.78	$ 1.23	$ 1.52	$ 1.38	$ 6.67	$ 5.91	$ 6.58
Diluted:
Net income available to common stockholders									$ 439,286	$ 390,153	$ 433,059
Income from continuing operations available to common stockholders (in shares)									65,939,455	66,085,089	65,898,255
Net income available to common stockholders/unitholders (in dollars per share)	1.95	1.51	1.40	1.81	1.78	1.22	1.52	1.38	$ 6.66	$ 5.90	$ 6.57
Stock Options
Basic:
Effect of Dilutive Securities									$ 0	$ 0	$ 0
Effect of dilutive securities (in shares)									99,033	44,031	69,100
Convertible Limited Partnership Units
Diluted:
Anti-dilutive securities (in shares)									2,300,478	2,274,941	2,252,575
Antidilutive securities excluded from computation of earnings per share									$ 15,300	$ 13,500	$ 14,800
Essex Portfolio, L.P.
Basic:
Net income available to common stockholders									$ 454,629	$ 403,605	$ 447,884
Income from continuing operations available to common stockholders (in shares)									68,140,900	68,315,999	68,081,730
Net income available to common stockholders/unitholders (in dollars per share)	1.95	1.51	1.40	1.81	1.78	1.23	1.52	1.38	$ 6.67	$ 5.91	$ 6.58
Diluted:
Net income available to common stockholders									$ 454,629	$ 403,605	$ 447,884
Income from continuing operations available to common stockholders (in shares)									68,239,933	68,360,030	68,150,830
Net income available to common stockholders/unitholders (in dollars per share)	$ 1.95	$ 1.51	$ 1.40	$ 1.81	$ 1.78	$ 1.23	$ 1.52	$ 1.38	$ 6.66	$ 5.90	$ 6.57
Essex Portfolio, L.P. \| Stock Options
Basic:
Effect of Dilutive Securities									$ 0	$ 0	$ 0
Effect of dilutive securities (in shares)									99,033	44,031	69,100
Diluted:
Anti-dilutive securities (in shares)									115,066	160,039	154,793

Equity Based Compensation Pla_3

Equity Based Compensation Plans - Narrative (Details)	Dec. 09, 2014shares	Dec. 31, 2013shares	Dec. 31, 2019USD ($)$ / sharesshares	Dec. 31, 2018USD ($)$ / sharesshares	Dec. 31, 2017USD ($)$ / sharesshares	Dec. 09, 2015	Dec. 31, 2011shares	May 31, 2018shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized \| shares								2,000,000
Accelerated share-based compensation cost			$ 3,500,000	$ 0	$ 0
Intrinsic value of the options outstanding and fully vested			$ 23,500,000	$ 12,500,000
Average fair value of stock options granted (in dollars per share) \| $ / shares			$ 24.02	$ 26.13	$ 22.41
Cap on the appreciation of the market price over the exercise price, option 1			$ 100	$ 100	$ 100
Cap on the appreciation of the market price over the exercise price, option 2			125	125	125
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share based compensation expense			11,400,000	12,100,000	9,800,000
Stock-based compensation capitalized			1,600,000	2,000,000	1,500,000
Intrinsic value of options exercised			18,700,000	$ 3,100,000	$ 16,700,000
Unrecognized compensation cost			$ 5,300,000
Unrecognized compensation cost, period for recognition			2 years 2 months 12 days
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation cost			$ 12,700,000
Unrecognized compensation cost, period for recognition			2 years 1 month 6 days
Granted (in shares) \| shares			41,643	51,945	62,706
2015 LTIP Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares) \| shares	44,750
Units issued subject only to performance measurement \| shares	24,000
Vesting percentage of units per year	20.00%
Option grants to officers and employees vesting period	5 years
Percent of awards earned						95.75%
Conversion ratio, incentive units			1
Liquidity measurement period			10 years
Measurement period			10 years
Series Z Incentive Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares) \| shares		50,500					154,500
Option grants to officers and employees vesting period		4 years
Conversion ratio, incentive units							1
Incentive units conversion ratio							one-for-one
Series Z Incentive Units \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage of units per year							0.00%
Option grants to officers and employees vesting period			8 years
Series Z Incentive Units \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage of units per year							14.00%
Option grants to officers and employees vesting period			15 years
Long Term Incentive Plan 2014 Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage of units per year		25.00%
Conversion ratio, incentive units			1
Liquidity measurement period			10 years
Measurement period			10 years
Vesting percentage for 2011 Z 1 Units to be convertible							100.00%
Long Term Incentive Plans - Z Units and 2014 LTIP Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share based compensation expense			$ 900,000	$ 800,000	$ 1,500,000
Stock-based compensation capitalized			200,000	$ 200,000	$ 500,000
Unrecognized compensation cost			$ 0
Granted (in shares) \| shares			0	0	0
Intrinsic value of vested and unvested LTIP units			$ 43,700,000

Equity Based Compensation Pla_4

Equity Based Compensation Plans - Weighted Average Assumptions (Details) - $ / shares	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Weighted average assumptions used to estimate fair value of stock options [Abstract]
Stock price (in dollars per share)	$ 304.85	$ 262.09	$ 240.56
Risk-free interest rates	2.01%	2.76%	2.30%
Expected lives	6 years	6 years	6 years
Volatility	19.56%	24.89%	24.10%
Dividend yield	2.72%	2.81%	2.90%

Equity Based Compensation Pla_5

Equity Based Compensation Plans - Summary of Stock Options Activity (Details) - $ / shares	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Shares
Outstanding at beginning of year (in shares)	612,954	536,208	557,648
Granted (in shares)	148,147	119,361	164,677
Exercised (in shares)	(182,817)	(39,175)	(176,489)
Forfeited and canceled (in shares)	(5,313)	(3,440)	(9,628)
Outstanding at end of year (in shares)	572,971	612,954	536,208
Options exercisable at year end (in shares)	305,379	322,837	223,796
Weighted- average exercise price
Outstanding at beginning of year (in dollars per share)	$ 224.57	$ 211.41	$ 181.50
Granted (in dollars per share)	304.85	262.09	240.56
Exercised (in dollars per share)	205.25	159.05	146.86
Forfeited and canceled (in dollars per share)	257.87	221.80	160.40
Outstanding at end of year (in dollars per share)	251.10	224.57	211.41
Options exercisable at year end (in dollars per share)	$ 223.90	$ 206.63	$ 191.09

Equity Based Compensation Pla_6

Equity Based Compensation Plans - Restricted Stock Activity and LITP Units (Details) - $ / shares	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Restricted Stock
Total Unvested Units
Unvested at beginning of year (in shares)	114,877	91,058	90,823	58,349
Granted (in shares)	41,643	51,945	62,706
Vested (in shares)	(13,222)	(48,212)	(29,675)
Forfeited and canceled (in shares)	(4,602)	(3,498)	(557)
Unvested at end of year (in shares)	114,877	91,058	90,823	58,349
Weighted- average grant price
Unvested at beginning of year (in dollars per share)	$ 180.99	$ 163.49	$ 149.11
Granted (in dollars per share)	235.93	194.70	177.28
Vested (in dollars per share)	143.56	150.76	170.17
Forfeited and canceled (in dollars per share)	158.06	158.71	119.37
Unvested at end of year (in dollars per share)	$ 197.62	$ 180.99	$ 163.49	$ 149.11
Long Term Incentive Plans - Z Units and 2014 LTIP Units
Total Unvested Units
Unvested at beginning of year (in shares)	1,890	11,161	23,212	60,027
Granted (in shares)	0	0	0
Vested (in shares)	(9,176)	(12,051)	(32,961)
Converted (in shares)	0	0	0
Forfeited and canceled (in shares)	(95)	0	(3,854)
Unvested at end of year (in shares)	1,890	11,161	23,212	60,027
Weighted- average grant price
Unvested at beginning of year (in dollars per share)	$ 75.03	$ 75.03	$ 75.11
Unvested at end of year (in dollars per share)	$ 75.03	$ 75.03	$ 75.03	$ 75.11
Total Vested Units
Vested, beginning balance (in shares)	134,081	213,300	181,027
Vested, units granted (in shares)	0	0	0
Vested, units vested (in shares)	9,176	12,051	32,961
Converted (in shares)	0	(91,270)	(688)
Cancelled (in shares)	0	0	0
Vested, ending balance (in shares)	143,257	134,081	213,300	181,027
Total Outstanding Units
Total outstanding units, beginning balance (in shares)	145,242	236,512	241,054
Total outstanding units, granted (in shares)	0	0	0
Total outstanding units, vested (in shares)	0	0	0
Total outstanding units, converted (in shares)	0	(91,270)	(688)
Total outstanding units, cancelled (in shares)	(95)	0	(3,854)
Total outstanding units, ending balance (in shares)	145,147	145,242	236,512	241,054
Weighted- average Remaining Contractual Life (years)	5 years 2 months 12 days	6 years 6 months	7 years 6 months	8 years 6 months

Segment Information (Details)

Segment Information (Details) $ in Thousands	12 Months Ended
Segment Information (Details) $ in Thousands	Dec. 31, 2019USD ($)segment	Dec. 31, 2018USD ($)	Dec. 31, 2017USD ($)
Segment Reporting [Abstract]
Number of reportable operating segments defined by geographical regions \| segment	3
Revenues from External Customers and Long-Lived Assets [Line Items]
Total property revenues	$ 1,450,628	$ 1,390,870	$ 1,354,325
Total net operating income	1,052,933	1,005,536	978,939
Corporate-level property management expenses	(32,899)	(31,062)	(30,156)
Depreciation and amortization	(483,750)	(479,884)	(468,881)
General and administrative	(54,262)	(53,451)	(41,385)
Expensed acquisition and investment related costs	(168)	(194)	(1,569)
Impairment loss	(7,105)	0	0
Gain (loss) on sale of real estate and land	(3,164)	61,861	26,423
Interest expense	(217,339)	(220,492)	(222,894)
Total return swap income	8,446	8,707	10,098
Interest and other income	46,298	23,010	24,604
Equity income from co-investments	112,136	89,132	86,445
Deferred tax expense on unrealized gain on unconsolidated co-investment	(1,457)	0	0
Gain (loss) on early retirement of debt, net	3,717	0	(1,796)
Gain on remeasurement of co-investment	31,535	1,253	88,641
Net income	464,448	413,599	458,043
Assets:
Net reportable operating segments - real estate assets	10,348,660	10,156,553
Real estate under development	546,075	454,629
Co-investments	1,335,339	1,300,140
Cash and cash equivalents, including restricted cash	81,094	151,395
Marketable securities	144,193	209,545
Notes and other receivables (includes related party receivables of $90.2 million and $11.1 million as of December 31, 2019 and December 31, 2018, respectively)	134,365	71,895
Operating lease right-of-use assets	74,744	0
Prepaid expenses and other assets	40,935	39,439
Total assets	12,705,405	12,383,596
Rental and Other Property
Revenues from External Customers and Long-Lived Assets [Line Items]
Total property revenues	1,450,628	1,390,870	1,354,325
Management and Other Fees from Affiliates
Revenues from External Customers and Long-Lived Assets [Line Items]
Management and other fees from affiliates	9,527	9,183	9,574
Operating Segments \| Southern California
Revenues from External Customers and Long-Lived Assets [Line Items]
Total net operating income	434,267	421,274	407,771
Assets:
Net reportable operating segments - real estate assets	4,233,110	4,368,882
Operating Segments \| Southern California \| Rental and Other Property
Revenues from External Customers and Long-Lived Assets [Line Items]
Total property revenues	610,240	592,281	574,552
Operating Segments \| Northern California
Revenues from External Customers and Long-Lived Assets [Line Items]
Total net operating income	420,320	385,483	371,597
Assets:
Net reportable operating segments - real estate assets	4,622,268	4,289,232
Operating Segments \| Northern California \| Rental and Other Property
Revenues from External Customers and Long-Lived Assets [Line Items]
Total property revenues	569,556	522,561	505,313
Operating Segments \| Seattle Metro
Revenues from External Customers and Long-Lived Assets [Line Items]
Total net operating income	173,875	165,244	162,111
Assets:
Net reportable operating segments - real estate assets	1,481,061	1,485,040
Operating Segments \| Seattle Metro \| Rental and Other Property
Revenues from External Customers and Long-Lived Assets [Line Items]
Total property revenues	245,476	236,525	229,871
Other Real Estate Assets
Revenues from External Customers and Long-Lived Assets [Line Items]
Total net operating income	24,471	33,535	37,460
Assets:
Net reportable operating segments - real estate assets	12,221	13,399
Other Real Estate Assets \| Rental and Other Property
Revenues from External Customers and Long-Lived Assets [Line Items]
Total property revenues	$ 25,356	$ 39,503	$ 44,589

401(k) Plan (Details)

401(k) Plan (Details) - USD ($) $ in Millions	12 Months Ended
401(k) Plan (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Defined Contribution Plan [Abstract]
Employer matching contribution, percent	50.00%
Company contributions to benefit plan	$ 2.4	$ 2.1	$ 1.8

Commitments and Contingencies (

Commitments and Contingencies (Details)	Dec. 31, 2019USD ($)
Guarantor Obligations [Line Items]
Property casualty insurance deductible per incident	$ 5,000,000
Pacific Western Insurance LLC
Guarantor Obligations [Line Items]
Cash and marketable securities	$ 78,400,000

Subsequent Events (Details)

Subsequent Events (Details)	1 Months Ended		12 Months Ended
Subsequent Events (Details)	Feb. 29, 2020USD ($)	Jan. 31, 2020USD ($)communityapartment	Dec. 31, 2019communityunit	Dec. 31, 2018communityunit
Subsequent Event [Line Items]
Number of units acquired \| unit			849
Subsequent Event
Subsequent Event [Line Items]
Proceeds from related party debt		$ 85,800,000
Percentage of price to par value	99.628%
Apartment Building
Subsequent Event [Line Items]
Number of communities acquired \| community			4	1
Number of units acquired \| unit			849	166
Canadian Pension Plan Investment Board (CPPIB) \| Subsequent Event
Subsequent Event [Line Items]
Limited partnership interest		45.00%
Future value of development		$ 1,000,000,000
Canadian Pension Plan Investment Board (CPPIB) \| Apartment Building \| Subsequent Event
Subsequent Event [Line Items]
Number of communities acquired \| community		6
Number of units acquired \| apartment		2,020
Unsecured Bonds 2.650% \| Senior Notes \| Subsequent Event
Subsequent Event [Line Items]
Proceeds from issuance of unsecured debt	$ 500,000,000
Coupon rate	2.65%

Quarterly Results of Operatio_3

Quarterly Results of Operations (Unaudited) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Condensed Income Statements, Captions [Line Items]
Total property revenues									$ 1,460,155	$ 1,400,053	$ 1,363,899
Net income	$ 135,182	$ 105,700	$ 98,061	$ 125,505	$ 124,440	$ 86,110	$ 106,410	$ 96,639	464,448	413,599	458,043
Net income available to common stockholders	$ 128,818	$ 99,335	$ 92,275	$ 118,858	$ 117,820	$ 80,975	$ 100,440	$ 90,918	$ 439,286	$ 390,153	$ 433,059
Net income:
Net income available to common stockholders - basic (in dollars per share)	$ 1.95	$ 1.51	$ 1.40	$ 1.81	$ 1.78	$ 1.23	$ 1.52	$ 1.38	$ 6.67	$ 5.91	$ 6.58
Net income available to common stockholders - diluted (in dollars per share)	1.95	1.51	1.40	1.81	1.78	1.22	1.52	1.38	6.66	5.90	6.57
Dividends declared (in dollars per share)	$ 1.95	$ 1.95	$ 1.95	$ 1.95	$ 1.86	$ 1.86	$ 1.86	$ 1.86	$ 7.80	$ 7.44	$ 7
Essex Portfolio, L.P.
Condensed Income Statements, Captions [Line Items]
Total property revenues									$ 1,460,155	$ 1,400,053	$ 1,363,899
Net income	$ 135,182	$ 105,700	$ 98,061	$ 125,505	$ 124,440	$ 86,110	$ 106,410	$ 96,639	464,448	413,599	458,043
Net income available to common stockholders	$ 133,298	$ 102,799	$ 95,503	$ 123,029	$ 121,891	$ 83,764	$ 103,900	$ 94,050	$ 454,629	$ 403,605	$ 447,884
Net income:
Net income available to common stockholders - basic (in dollars per share)	$ 1.95	$ 1.51	$ 1.40	$ 1.81	$ 1.78	$ 1.23	$ 1.52	$ 1.38	$ 6.67	$ 5.91	$ 6.58
Net income available to common stockholders - diluted (in dollars per share)	1.95	1.51	1.40	1.81	1.78	1.23	1.52	1.38	$ 6.66	$ 5.90	$ 6.57
Dividends declared (in dollars per share)	$ 1.95	$ 1.95	$ 1.95	$ 1.95	$ 1.86	$ 1.86	$ 1.86	$ 1.86
Property
Condensed Income Statements, Captions [Line Items]
Total property revenues	$ 372,861	$ 364,504	$ 359,375	$ 353,888	$ 350,787	$ 348,610	$ 346,526	$ 344,947
Property \| Essex Portfolio, L.P.
Condensed Income Statements, Captions [Line Items]
Total property revenues	$ 372,861	$ 364,504	$ 359,375	$ 353,888	$ 350,787	$ 348,610	$ 346,526	$ 344,947

SCHEDULE III REAL ESTATE AND _2

SCHEDULE III REAL ESTATE AND ACCUMULATED DEPRECIATION (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2019USD ($)apartment	Dec. 31, 2018USD ($)	Dec. 31, 2017USD ($)	Dec. 31, 2019USD ($)ft²	Mar. 31, 2019USD ($)
Real Estate and Accumulated Depreciation [Line Items]
Encumbrance				$ 990,667
Initial cost
Land				2,736,256
Buildings and improvements				9,395,624
Costs capitalized subsequent to acquisition				1,906,262
Gross amount carried at close of period
Land and improvements				2,773,805
Buildings and improvements				11,264,337
Total	$ 14,038,142			14,038,142
Accumulated depreciation	(3,209,548)	$ (2,769,297)	$ (2,769,297)	(3,689,482)
Aggregate cost for federal income tax purpose	11,000,000
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Acquisition, development, and improvement of real estate	672,041	325,986	700,892
Disposition of real estate and other	0	(321,958)	(28,367)
Reclassification from other assets and into building and improvements, net	0	0	1,826
Balance at the end of year	14,038,142
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at beginning of year	(3,209,548)	(2,769,297)	(2,311,546)
Depreciation expense	479,934	478,721	464,043
Depreciation expense - Disposals and other	0	(38,470)	(6,292)
Balance at the end of year	(3,689,482)	(3,209,548)	(2,769,297)
Hidden Valley
Real Estate and Accumulated Depreciation [Line Items]
Encumbrance				29,700
Gross amount carried at close of period
Total	97,000			97,000
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 97,000
One South Market
Real Estate and Accumulated Depreciation [Line Items]
Encumbrance					$ 86,000
Gross amount carried at close of period
Total					$ 179,000
Encumbered Apartment Communities
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	5,966
Encumbrance				990,667
Initial cost
Land				318,097
Buildings and improvements				1,126,510
Costs capitalized subsequent to acquisition				250,268
Gross amount carried at close of period
Land and improvements				326,263
Buildings and improvements				1,368,612
Total	$ 1,694,875			1,694,875
Accumulated depreciation	(456,922)			(456,922)
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	1,694,875
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (456,922)
Encumbered Apartment Communities \| Belmont Station
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	275
Encumbrance				29,703
Initial cost
Land				8,100
Buildings and improvements				66,666
Costs capitalized subsequent to acquisition				6,642
Gross amount carried at close of period
Land and improvements				8,267
Buildings and improvements				73,141
Total	$ 81,408			81,408
Accumulated depreciation	$ (31,302)			(31,302)
Date of construction	2009
Date acquired	Mar-09
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 81,408
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (31,302)
Encumbered Apartment Communities \| Belmont Station \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Encumbered Apartment Communities \| Belmont Station \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Encumbered Apartment Communities \| Brio
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	300
Encumbrance				101,540
Initial cost
Land				16,885
Buildings and improvements				151,741
Costs capitalized subsequent to acquisition				704
Gross amount carried at close of period
Land and improvements				16,885
Buildings and improvements				152,445
Total	$ 169,330			169,330
Accumulated depreciation	$ (2,972)			(2,972)
Date of construction	2015
Date acquired	Jun-19
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 169,330
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (2,972)
Encumbered Apartment Communities \| Brio \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Encumbered Apartment Communities \| Brio \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Encumbered Apartment Communities \| Brookside Oaks
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	170
Encumbrance				17,318
Initial cost
Land				7,301
Buildings and improvements				16,310
Costs capitalized subsequent to acquisition				27,158
Gross amount carried at close of period
Land and improvements				10,328
Buildings and improvements				40,441
Total	$ 50,769			50,769
Accumulated depreciation	$ (24,680)			(24,680)
Date of construction	1973
Date acquired	Jun-00
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 50,769
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (24,680)
Encumbered Apartment Communities \| Brookside Oaks \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Encumbered Apartment Communities \| Brookside Oaks \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Encumbered Apartment Communities \| City View
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	572
Encumbrance				60,841
Initial cost
Land				9,883
Buildings and improvements				37,670
Costs capitalized subsequent to acquisition				31,487
Gross amount carried at close of period
Land and improvements				10,350
Buildings and improvements				68,690
Total	$ 79,040			79,040
Accumulated depreciation	$ (50,256)			(50,256)
Date of construction	1975
Date acquired	Mar-98
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 79,040
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (50,256)
Encumbered Apartment Communities \| City View \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Encumbered Apartment Communities \| City View \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Encumbered Apartment Communities \| Domaine
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	92
Encumbrance				12,845
Initial cost
Land				9,059
Buildings and improvements				27,177
Costs capitalized subsequent to acquisition				1,296
Gross amount carried at close of period
Land and improvements				9,059
Buildings and improvements				28,473
Total	$ 37,532			37,532
Accumulated depreciation	$ (7,309)			(7,309)
Date of construction	2009
Date acquired	Sep-12
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 37,532
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (7,309)
Encumbered Apartment Communities \| Domaine \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Encumbered Apartment Communities \| Domaine \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Encumbered Apartment Communities \| Fairhaven Apartments
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	164
Encumbrance				17,602
Initial cost
Land				2,626
Buildings and improvements				10,485
Costs capitalized subsequent to acquisition				9,757
Gross amount carried at close of period
Land and improvements				2,957
Buildings and improvements				19,911
Total	$ 22,868			22,868
Accumulated depreciation	$ (12,157)			(12,157)
Date of construction	1970
Date acquired	Nov-01
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 22,868
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (12,157)
Encumbered Apartment Communities \| Fairhaven Apartments \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Encumbered Apartment Communities \| Fairhaven Apartments \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Encumbered Apartment Communities \| Form 15
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	242
Encumbrance				43,616
Initial cost
Land				24,510
Buildings and improvements				72,221
Costs capitalized subsequent to acquisition				8,167
Gross amount carried at close of period
Land and improvements				25,540
Buildings and improvements				79,358
Total	$ 104,898			104,898
Accumulated depreciation	$ (10,490)			(10,490)
Date of construction	2014
Date acquired	Mar-16
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 104,898
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (10,490)
Encumbered Apartment Communities \| Form 15 \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Encumbered Apartment Communities \| Form 15 \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Encumbered Apartment Communities \| Fountain Park
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	705
Encumbrance				82,639
Initial cost
Land				25,073
Buildings and improvements				94,980
Costs capitalized subsequent to acquisition				34,339
Gross amount carried at close of period
Land and improvements				25,203
Buildings and improvements				129,189
Total	$ 154,392			154,392
Accumulated depreciation	$ (74,993)			(74,993)
Date of construction	2002
Date acquired	Feb-04
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 154,392
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (74,993)
Encumbered Apartment Communities \| Fountain Park \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Encumbered Apartment Communities \| Fountain Park \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Encumbered Apartment Communities \| Hidden Valley
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	324
Encumbrance				29,392
Initial cost
Land				14,174
Buildings and improvements				34,065
Costs capitalized subsequent to acquisition				7,501
Gross amount carried at close of period
Land and improvements				9,674
Buildings and improvements				46,066
Total	$ 55,740			55,740
Accumulated depreciation	$ (22,843)			(22,843)
Date of construction	2004
Date acquired	Dec-04
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 55,740
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (22,843)
Encumbered Apartment Communities \| Hidden Valley \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Encumbered Apartment Communities \| Hidden Valley \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Encumbered Apartment Communities \| Highridge
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	255
Encumbrance				69,309
Initial cost
Land				5,419
Buildings and improvements				18,347
Costs capitalized subsequent to acquisition				32,286
Gross amount carried at close of period
Land and improvements				6,073
Buildings and improvements				49,979
Total	$ 56,052			56,052
Accumulated depreciation	$ (39,463)			(39,463)
Date of construction	1972
Date acquired	May-97
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 56,052
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (39,463)
Encumbered Apartment Communities \| Highridge \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Encumbered Apartment Communities \| Highridge \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Encumbered Apartment Communities \| 1000 Kiely
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	121
Encumbrance				33,260
Initial cost
Land				9,359
Buildings and improvements				21,845
Costs capitalized subsequent to acquisition				8,294
Gross amount carried at close of period
Land and improvements				9,359
Buildings and improvements				30,139
Total	$ 39,498			39,498
Accumulated depreciation	$ (12,313)			(12,313)
Date of construction	1971
Date acquired	Mar-11
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 39,498
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (12,313)
Encumbered Apartment Communities \| 1000 Kiely \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Encumbered Apartment Communities \| 1000 Kiely \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Encumbered Apartment Communities \| Magnolia Square/Magnolia Lane
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	188
Encumbrance				52,270
Initial cost
Land				8,190
Buildings and improvements				24,736
Costs capitalized subsequent to acquisition				18,388
Gross amount carried at close of period
Land and improvements				8,191
Buildings and improvements				43,123
Total	$ 51,314			51,314
Accumulated depreciation	$ (23,557)			(23,557)
Date of construction	1963
Date acquired	Sep-07
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 51,314
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (23,557)
Encumbered Apartment Communities \| Magnolia Square/Magnolia Lane \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Encumbered Apartment Communities \| Magnolia Square/Magnolia Lane \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Encumbered Apartment Communities \| Marquis
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	166
Encumbrance				43,772
Initial cost
Land				20,495
Buildings and improvements				47,823
Costs capitalized subsequent to acquisition				46
Gross amount carried at close of period
Land and improvements				20,495
Buildings and improvements				47,869
Total	$ 68,364			68,364
Accumulated depreciation	$ (1,664)			(1,664)
Date of construction	2015
Date acquired	Dec-18
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 68,364
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (1,664)
Encumbered Apartment Communities \| Marquis \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Encumbered Apartment Communities \| Marquis \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Encumbered Apartment Communities \| Montarosa
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	472
Encumbrance				59,723
Initial cost
Land				26,697
Buildings and improvements				106,787
Costs capitalized subsequent to acquisition				6,299
Gross amount carried at close of period
Land and improvements				26,697
Buildings and improvements				113,086
Total	$ 139,783			139,783
Accumulated depreciation	$ (24,590)			(24,590)
Date of construction	1990
Date acquired	Apr-14
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 139,783
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (24,590)
Encumbered Apartment Communities \| Montarosa \| Minimum
Gross amount carried at close of period
Life used for depreciation	5 years
Encumbered Apartment Communities \| Montarosa \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Encumbered Apartment Communities \| Montebello
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	248
Encumbrance				23,682
Initial cost
Land				13,857
Buildings and improvements				41,575
Costs capitalized subsequent to acquisition				5,542
Gross amount carried at close of period
Land and improvements				13,858
Buildings and improvements				47,116
Total	$ 60,974			60,974
Accumulated depreciation	$ (13,781)			(13,781)
Date of construction	1996
Date acquired	Jul-12
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 60,974
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (13,781)
Encumbered Apartment Communities \| Montebello \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Encumbered Apartment Communities \| Montebello \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Encumbered Apartment Communities \| Montejo Apartments
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	124
Encumbrance				12,536
Initial cost
Land				1,925
Buildings and improvements				7,685
Costs capitalized subsequent to acquisition				4,365
Gross amount carried at close of period
Land and improvements				2,194
Buildings and improvements				11,781
Total	$ 13,975			13,975
Accumulated depreciation	$ (7,013)			(7,013)
Date of construction	1974
Date acquired	Nov-01
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 13,975
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (7,013)
Encumbered Apartment Communities \| Montejo Apartments \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Encumbered Apartment Communities \| Montejo Apartments \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Encumbered Apartment Communities \| Sage at Cupertino
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	230
Encumbrance				51,724
Initial cost
Land				35,719
Buildings and improvements				53,449
Costs capitalized subsequent to acquisition				6,442
Gross amount carried at close of period
Land and improvements				35,719
Buildings and improvements				59,891
Total	$ 95,610			95,610
Accumulated depreciation	$ (6,349)			(6,349)
Date of construction	1971
Date acquired	Mar-17
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 95,610
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (6,349)
Encumbered Apartment Communities \| Sage at Cupertino \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Encumbered Apartment Communities \| Sage at Cupertino \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Encumbered Apartment Communities \| The Barkley
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	161
Encumbrance				14,857
Initial cost
Land				0
Buildings and improvements				8,520
Costs capitalized subsequent to acquisition				7,440
Gross amount carried at close of period
Land and improvements				2,353
Buildings and improvements				13,607
Total	$ 15,960			15,960
Accumulated depreciation	$ (9,240)			(9,240)
Date of construction	1984
Date acquired	Apr-00
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 15,960
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (9,240)
Encumbered Apartment Communities \| The Barkley \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Encumbered Apartment Communities \| The Barkley \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Encumbered Apartment Communities \| The Dylan
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	184
Encumbrance				58,854
Initial cost
Land				19,984
Buildings and improvements				82,286
Costs capitalized subsequent to acquisition				1,202
Gross amount carried at close of period
Land and improvements				19,990
Buildings and improvements				83,482
Total	$ 103,472			103,472
Accumulated depreciation	$ (15,578)			(15,578)
Date of construction	2015
Date acquired	Mar-15
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 103,472
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (15,578)
Encumbered Apartment Communities \| The Dylan \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Encumbered Apartment Communities \| The Dylan \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Encumbered Apartment Communities \| The Huxley
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	187
Encumbrance				53,589
Initial cost
Land				19,362
Buildings and improvements				75,641
Costs capitalized subsequent to acquisition				1,385
Gross amount carried at close of period
Land and improvements				19,371
Buildings and improvements				77,017
Total	$ 96,388			96,388
Accumulated depreciation	$ (14,609)			(14,609)
Date of construction	2014
Date acquired	Mar-15
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 96,388
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (14,609)
Encumbered Apartment Communities \| The Huxley \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Encumbered Apartment Communities \| The Huxley \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Encumbered Apartment Communities \| The Waterford
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	238
Encumbrance				28,713
Initial cost
Land				11,808
Buildings and improvements				24,500
Costs capitalized subsequent to acquisition				17,347
Gross amount carried at close of period
Land and improvements				15,165
Buildings and improvements				38,490
Total	$ 53,655			53,655
Accumulated depreciation	$ (23,732)			(23,732)
Date of construction	2000
Date acquired	Jun-00
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 53,655
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (23,732)
Encumbered Apartment Communities \| The Waterford \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Encumbered Apartment Communities \| The Waterford \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Encumbered Apartment Communities \| Township
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	132
Encumbrance				46,087
Initial cost
Land				19,812
Buildings and improvements				70,619
Costs capitalized subsequent to acquisition				251
Gross amount carried at close of period
Land and improvements				19,812
Buildings and improvements				70,870
Total	$ 90,682			90,682
Accumulated depreciation	$ (713)			(713)
Date of construction	2014
Date acquired	Sep-19
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 90,682
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (713)
Encumbered Apartment Communities \| Township \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Encumbered Apartment Communities \| Township \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Encumbered Apartment Communities \| Valley Park
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	160
Encumbrance				20,327
Initial cost
Land				3,361
Buildings and improvements				13,420
Costs capitalized subsequent to acquisition				6,186
Gross amount carried at close of period
Land and improvements				3,761
Buildings and improvements				19,206
Total	$ 22,967			22,967
Accumulated depreciation	$ (11,634)			(11,634)
Date of construction	1969
Date acquired	Nov-01
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 22,967
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (11,634)
Encumbered Apartment Communities \| Valley Park \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Encumbered Apartment Communities \| Valley Park \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Encumbered Apartment Communities \| Villa Angelina
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	256
Encumbrance				26,468
Initial cost
Land				4,498
Buildings and improvements				17,962
Costs capitalized subsequent to acquisition				7,744
Gross amount carried at close of period
Land and improvements				4,962
Buildings and improvements				25,242
Total	$ 30,204			30,204
Accumulated depreciation	$ (15,684)			(15,684)
Date of construction	1970
Date acquired	Nov-01
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 30,204
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (15,684)
Encumbered Apartment Communities \| Villa Angelina \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Encumbered Apartment Communities \| Villa Angelina \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Encumbered Apartment Communities \| Foster's Landing \| Minimum
Gross amount carried at close of period
Life used for depreciation	5 years
Encumbered Apartment Communities \| Foster's Landing \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	43,932
Initial cost
Land				2,415,080
Buildings and improvements				8,256,799
Costs capitalized subsequent to acquisition				1,643,811
Gross amount carried at close of period
Land and improvements				2,443,633
Buildings and improvements				9,872,057
Total	$ 12,315,690			12,315,690
Accumulated depreciation	(3,217,204)			(3,217,204)
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	12,315,690
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (3,217,204)
Unencumbered Apartment Communities \| Alessio
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	624
Initial cost
Land				32,136
Buildings and improvements				128,543
Costs capitalized subsequent to acquisition				12,865
Gross amount carried at close of period
Land and improvements				32,136
Buildings and improvements				141,408
Total	$ 173,544			173,544
Accumulated depreciation	$ (31,530)			(31,530)
Date of construction	2001
Date acquired	Apr-14
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 173,544
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (31,530)
Unencumbered Apartment Communities \| Alessio \| Minimum
Gross amount carried at close of period
Life used for depreciation	5 years
Unencumbered Apartment Communities \| Alessio \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| Allegro
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	97
Initial cost
Land				5,869
Buildings and improvements				23,977
Costs capitalized subsequent to acquisition				2,530
Gross amount carried at close of period
Land and improvements				5,869
Buildings and improvements				26,507
Total	$ 32,376			32,376
Accumulated depreciation	$ (10,365)			(10,365)
Date of construction	2010
Date acquired	Oct-10
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 32,376
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (10,365)
Unencumbered Apartment Communities \| Allegro \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities \| Allegro \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| Allure at Scripps Ranch
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	194
Initial cost
Land				11,923
Buildings and improvements				47,690
Costs capitalized subsequent to acquisition				1,653
Gross amount carried at close of period
Land and improvements				11,923
Buildings and improvements				49,343
Total	$ 61,266			61,266
Accumulated depreciation	$ (10,557)			(10,557)
Date of construction	2002
Date acquired	Apr-14
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 61,266
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (10,557)
Unencumbered Apartment Communities \| Allure at Scripps Ranch \| Minimum
Gross amount carried at close of period
Life used for depreciation	5 years
Unencumbered Apartment Communities \| Allure at Scripps Ranch \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| Alpine Village
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	301
Initial cost
Land				4,967
Buildings and improvements				19,728
Costs capitalized subsequent to acquisition				9,094
Gross amount carried at close of period
Land and improvements				4,982
Buildings and improvements				28,807
Total	$ 33,789			33,789
Accumulated depreciation	$ (16,958)			(16,958)
Date of construction	1971
Date acquired	Dec-02
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 33,789
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (16,958)
Unencumbered Apartment Communities \| Alpine Village \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities \| Alpine Village \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| Anavia
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	250
Initial cost
Land				15,925
Buildings and improvements				63,712
Costs capitalized subsequent to acquisition				8,796
Gross amount carried at close of period
Land and improvements				15,925
Buildings and improvements				72,508
Total	$ 88,433			88,433
Accumulated depreciation	$ (22,599)			(22,599)
Date of construction	2009
Date acquired	Dec-10
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 88,433
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (22,599)
Unencumbered Apartment Communities \| Anavia \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities \| Anavia \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| Annaliese
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	56
Initial cost
Land				4,727
Buildings and improvements				14,229
Costs capitalized subsequent to acquisition				701
Gross amount carried at close of period
Land and improvements				4,726
Buildings and improvements				14,931
Total	$ 19,657			19,657
Accumulated depreciation	$ (3,613)			(3,613)
Date of construction	2009
Date acquired	Jan-13
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 19,657
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (3,613)
Unencumbered Apartment Communities \| Annaliese \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities \| Annaliese \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| Apex
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	366
Initial cost
Land				44,240
Buildings and improvements				103,251
Costs capitalized subsequent to acquisition				3,857
Gross amount carried at close of period
Land and improvements				44,240
Buildings and improvements				107,108
Total	$ 151,348			151,348
Accumulated depreciation	$ (19,343)			(19,343)
Date of construction	2014
Date acquired	Aug-14
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 151,348
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (19,343)
Unencumbered Apartment Communities \| Apex \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities \| Apex \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| Aqua at Marina Del Rey
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	500
Initial cost
Land				58,442
Buildings and improvements				175,326
Costs capitalized subsequent to acquisition				14,430
Gross amount carried at close of period
Land and improvements				58,442
Buildings and improvements				189,756
Total	$ 248,198			248,198
Accumulated depreciation	$ (44,329)			(44,329)
Date of construction	2001
Date acquired	Apr-14
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 248,198
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (44,329)
Unencumbered Apartment Communities \| Aqua at Marina Del Rey \| Minimum
Gross amount carried at close of period
Life used for depreciation	5 years
Unencumbered Apartment Communities \| Aqua at Marina Del Rey \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| Ascent
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	90
Initial cost
Land				3,924
Buildings and improvements				11,862
Costs capitalized subsequent to acquisition				2,172
Gross amount carried at close of period
Land and improvements				3,924
Buildings and improvements				14,034
Total	$ 17,958			17,958
Accumulated depreciation	$ (4,169)			(4,169)
Date of construction	1988
Date acquired	Oct-12
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 17,958
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (4,169)
Unencumbered Apartment Communities \| Ascent \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities \| Ascent \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| Ashton Sherman Village
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	264
Initial cost
Land				23,550
Buildings and improvements				93,811
Costs capitalized subsequent to acquisition				976
Gross amount carried at close of period
Land and improvements				23,550
Buildings and improvements				94,787
Total	$ 118,337			118,337
Accumulated depreciation	$ (10,157)			(10,157)
Date of construction	2014
Date acquired	Dec-16
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 118,337
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (10,157)
Unencumbered Apartment Communities \| Ashton Sherman Village \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities \| Ashton Sherman Village \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| Avant
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	440
Initial cost
Land				32,379
Buildings and improvements				137,940
Costs capitalized subsequent to acquisition				3,203
Gross amount carried at close of period
Land and improvements				32,379
Buildings and improvements				141,143
Total	$ 173,522			173,522
Accumulated depreciation	$ (21,614)			(21,614)
Date of construction	2014
Date acquired	Jun-15
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 173,522
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (21,614)
Unencumbered Apartment Communities \| Avant \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities \| Avant \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| Avenue 64
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	224
Initial cost
Land				27,235
Buildings and improvements				64,403
Costs capitalized subsequent to acquisition				14,656
Gross amount carried at close of period
Land and improvements				27,235
Buildings and improvements				79,059
Total	$ 106,294			106,294
Accumulated depreciation	$ (15,897)			(15,897)
Date of construction	2007
Date acquired	Apr-14
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 106,294
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (15,897)
Unencumbered Apartment Communities \| Avenue 64 \| Minimum
Gross amount carried at close of period
Life used for depreciation	5 years
Unencumbered Apartment Communities \| Avenue 64 \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| Aviara
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	166
Initial cost
Land				0
Buildings and improvements				49,813
Costs capitalized subsequent to acquisition				1,412
Gross amount carried at close of period
Land and improvements				0
Buildings and improvements				51,225
Total	$ 51,225			51,225
Accumulated depreciation	$ (11,908)			(11,908)
Date of construction	2013
Date acquired	Apr-14
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 51,225
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (11,908)
Unencumbered Apartment Communities \| Aviara \| Minimum
Gross amount carried at close of period
Life used for depreciation	5 years
Unencumbered Apartment Communities \| Aviara \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| Avondale at Warner Center
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	446
Initial cost
Land				10,536
Buildings and improvements				24,522
Costs capitalized subsequent to acquisition				24,703
Gross amount carried at close of period
Land and improvements				10,601
Buildings and improvements				49,160
Total	$ 59,761			59,761
Accumulated depreciation	$ (34,453)			(34,453)
Date of construction	1970
Date acquired	Jan-99
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 59,761
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (34,453)
Unencumbered Apartment Communities \| Avondale at Warner Center \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities \| Avondale at Warner Center \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| Axis 2300
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	115
Initial cost
Land				5,405
Buildings and improvements				33,585
Costs capitalized subsequent to acquisition				1,963
Gross amount carried at close of period
Land and improvements				5,405
Buildings and improvements				35,548
Total	$ 40,953			40,953
Accumulated depreciation	$ (13,576)			(13,576)
Date of construction	2010
Date acquired	Aug-10
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 40,953
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (13,576)
Unencumbered Apartment Communities \| Axis 2300 \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities \| Axis 2300 \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| Bel Air
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	462
Initial cost
Land				12,105
Buildings and improvements				18,252
Costs capitalized subsequent to acquisition				40,856
Gross amount carried at close of period
Land and improvements				12,682
Buildings and improvements				58,531
Total	$ 71,213			71,213
Accumulated depreciation	$ (40,414)			(40,414)
Date of construction	1988
Date acquired	Jan-95
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 71,213
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (40,414)
Unencumbered Apartment Communities \| Bel Air \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities \| Bel Air \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| Belcarra
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	296
Initial cost
Land				21,725
Buildings and improvements				92,091
Costs capitalized subsequent to acquisition				2,283
Gross amount carried at close of period
Land and improvements				21,725
Buildings and improvements				94,374
Total	$ 116,099			116,099
Accumulated depreciation	$ (19,774)			(19,774)
Date of construction	2009
Date acquired	Apr-14
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 116,099
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (19,774)
Unencumbered Apartment Communities \| Belcarra \| Minimum
Gross amount carried at close of period
Life used for depreciation	5 years
Unencumbered Apartment Communities \| Belcarra \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| Bella Villagio
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	231
Initial cost
Land				17,247
Buildings and improvements				40,343
Costs capitalized subsequent to acquisition				4,001
Gross amount carried at close of period
Land and improvements				17,247
Buildings and improvements				44,344
Total	$ 61,591			61,591
Accumulated depreciation	$ (14,888)			(14,888)
Date of construction	2004
Date acquired	Sep-10
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 61,591
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (14,888)
Unencumbered Apartment Communities \| Bella Villagio \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities \| Bella Villagio \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| BellCentre
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	248
Initial cost
Land				16,197
Buildings and improvements				67,207
Costs capitalized subsequent to acquisition				5,041
Gross amount carried at close of period
Land and improvements				16,197
Buildings and improvements				72,248
Total	$ 88,445			88,445
Accumulated depreciation	$ (15,892)			(15,892)
Date of construction	2001
Date acquired	Apr-14
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 88,445
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (15,892)
Unencumbered Apartment Communities \| BellCentre \| Minimum
Gross amount carried at close of period
Life used for depreciation	5 years
Unencumbered Apartment Communities \| BellCentre \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| Bellerive
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	63
Initial cost
Land				5,401
Buildings and improvements				21,803
Costs capitalized subsequent to acquisition				1,312
Gross amount carried at close of period
Land and improvements				5,401
Buildings and improvements				23,115
Total	$ 28,516			28,516
Accumulated depreciation	$ (7,768)			(7,768)
Date of construction	2011
Date acquired	Aug-11
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 28,516
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (7,768)
Unencumbered Apartment Communities \| Bellerive \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities \| Bellerive \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| Belmont Terrace
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	71
Initial cost
Land				4,446
Buildings and improvements				10,290
Costs capitalized subsequent to acquisition				7,294
Gross amount carried at close of period
Land and improvements				4,473
Buildings and improvements				17,557
Total	$ 22,030			22,030
Accumulated depreciation	$ (9,414)			(9,414)
Date of construction	1974
Date acquired	Oct-06
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 22,030
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (9,414)
Unencumbered Apartment Communities \| Belmont Terrace \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities \| Belmont Terrace \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| Bennett Lofts
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	165
Initial cost
Land				21,771
Buildings and improvements				50,800
Costs capitalized subsequent to acquisition				30,544
Gross amount carried at close of period
Land and improvements				28,371
Buildings and improvements				74,744
Total	$ 103,115			103,115
Accumulated depreciation	$ (19,437)			(19,437)
Date of construction	2004
Date acquired	Dec-12
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 103,115
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (19,437)
Unencumbered Apartment Communities \| Bennett Lofts \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities \| Bennett Lofts \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| Bernardo Crest
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	216
Initial cost
Land				10,802
Buildings and improvements				43,209
Costs capitalized subsequent to acquisition				4,737
Gross amount carried at close of period
Land and improvements				10,802
Buildings and improvements				47,946
Total	$ 58,748			58,748
Accumulated depreciation	$ (10,574)			(10,574)
Date of construction	1988
Date acquired	Apr-14
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 58,748
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (10,574)
Unencumbered Apartment Communities \| Bernardo Crest \| Minimum
Gross amount carried at close of period
Life used for depreciation	5 years
Unencumbered Apartment Communities \| Bernardo Crest \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| Bonita Cedars
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	120
Initial cost
Land				2,496
Buildings and improvements				9,913
Costs capitalized subsequent to acquisition				5,583
Gross amount carried at close of period
Land and improvements				2,503
Buildings and improvements				15,489
Total	$ 17,992			17,992
Accumulated depreciation	$ (8,551)			(8,551)
Date of construction	1983
Date acquired	Dec-02
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 17,992
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (8,551)
Unencumbered Apartment Communities \| Bonita Cedars \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities \| Bonita Cedars \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| Boulevard
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	172
Initial cost
Land				3,520
Buildings and improvements				8,182
Costs capitalized subsequent to acquisition				14,248
Gross amount carried at close of period
Land and improvements				3,580
Buildings and improvements				22,370
Total	$ 25,950			25,950
Accumulated depreciation	$ (17,944)			(17,944)
Date of construction	1978
Date acquired	Jan-96
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 25,950
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (17,944)
Unencumbered Apartment Communities \| Boulevard \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities \| Boulevard \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| Bridle Trails
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	108
Initial cost
Land				1,500
Buildings and improvements				5,930
Costs capitalized subsequent to acquisition				6,614
Gross amount carried at close of period
Land and improvements				1,531
Buildings and improvements				12,513
Total	$ 14,044			14,044
Accumulated depreciation	$ (8,949)			(8,949)
Date of construction	1986
Date acquired	Oct-97
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 14,044
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (8,949)
Unencumbered Apartment Communities \| Bridle Trails \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities \| Bridle Trails \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| Brighton Ridge
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	264
Initial cost
Land				2,623
Buildings and improvements				10,800
Costs capitalized subsequent to acquisition				6,174
Gross amount carried at close of period
Land and improvements				2,656
Buildings and improvements				16,941
Total	$ 19,597			19,597
Accumulated depreciation	$ (12,601)			(12,601)
Date of construction	1986
Date acquired	Dec-96
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 19,597
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (12,601)
Unencumbered Apartment Communities \| Brighton Ridge \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities \| Brighton Ridge \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| Bristol Commons
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	188
Initial cost
Land				5,278
Buildings and improvements				11,853
Costs capitalized subsequent to acquisition				10,206
Gross amount carried at close of period
Land and improvements				5,293
Buildings and improvements				22,044
Total	$ 27,337			27,337
Accumulated depreciation	$ (15,631)			(15,631)
Date of construction	1989
Date acquired	Jan-95
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 27,337
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (15,631)
Unencumbered Apartment Communities \| Bristol Commons \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities \| Bristol Commons \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| 416 on Broadway
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	115
Initial cost
Land				8,557
Buildings and improvements				34,235
Costs capitalized subsequent to acquisition				3,407
Gross amount carried at close of period
Land and improvements				8,557
Buildings and improvements				37,642
Total	$ 46,199			46,199
Accumulated depreciation	$ (12,466)			(12,466)
Date of construction	2009
Date acquired	Dec-10
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 46,199
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (12,466)
Unencumbered Apartment Communities \| 416 on Broadway \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities \| 416 on Broadway \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| Bunker Hill
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	456
Initial cost
Land				11,498
Buildings and improvements				27,871
Costs capitalized subsequent to acquisition				91,959
Gross amount carried at close of period
Land and improvements				11,639
Buildings and improvements				119,689
Total	$ 131,328			131,328
Accumulated depreciation	$ (67,010)			(67,010)
Date of construction	1968
Date acquired	Mar-98
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 131,328
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (67,010)
Unencumbered Apartment Communities \| Bunker Hill \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities \| Bunker Hill \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| Camarillo Oaks
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	564
Initial cost
Land				10,953
Buildings and improvements				25,254
Costs capitalized subsequent to acquisition				8,562
Gross amount carried at close of period
Land and improvements				11,075
Buildings and improvements				33,694
Total	$ 44,769			44,769
Accumulated depreciation	$ (25,023)			(25,023)
Date of construction	1985
Date acquired	Jul-96
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 44,769
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (25,023)
Unencumbered Apartment Communities \| Camarillo Oaks \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities \| Camarillo Oaks \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| Cambridge Park
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	320
Initial cost
Land				18,185
Buildings and improvements				72,739
Costs capitalized subsequent to acquisition				3,642
Gross amount carried at close of period
Land and improvements				18,185
Buildings and improvements				76,381
Total	$ 94,566			94,566
Accumulated depreciation	$ (16,732)			(16,732)
Date of construction	1998
Date acquired	Apr-14
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 94,566
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (16,732)
Unencumbered Apartment Communities \| Cambridge Park \| Minimum
Gross amount carried at close of period
Life used for depreciation	5 years
Unencumbered Apartment Communities \| Cambridge Park \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| Camino Ruiz Square
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	159
Initial cost
Land				6,871
Buildings and improvements				26,119
Costs capitalized subsequent to acquisition				2,349
Gross amount carried at close of period
Land and improvements				6,931
Buildings and improvements				28,408
Total	$ 35,339			35,339
Accumulated depreciation	$ (12,693)			(12,693)
Date of construction	1990
Date acquired	Dec-06
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 35,339
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (12,693)
Unencumbered Apartment Communities \| Camino Ruiz Square \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities \| Camino Ruiz Square \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| Canyon Oaks
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	250
Initial cost
Land				19,088
Buildings and improvements				44,473
Costs capitalized subsequent to acquisition				4,988
Gross amount carried at close of period
Land and improvements				19,088
Buildings and improvements				49,461
Total	$ 68,549			68,549
Accumulated depreciation	$ (21,478)			(21,478)
Date of construction	2005
Date acquired	May-07
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 68,549
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (21,478)
Unencumbered Apartment Communities \| Canyon Oaks \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities \| Canyon Oaks \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| Canyon Pointe
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	250
Initial cost
Land				4,692
Buildings and improvements				18,288
Costs capitalized subsequent to acquisition				9,096
Gross amount carried at close of period
Land and improvements				4,693
Buildings and improvements				27,383
Total	$ 32,076			32,076
Accumulated depreciation	$ (15,931)			(15,931)
Date of construction	1990
Date acquired	Oct-03
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 32,076
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (15,931)
Unencumbered Apartment Communities \| Canyon Pointe \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities \| Canyon Pointe \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| Capri at Sunny Hills
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	102
Initial cost
Land				3,337
Buildings and improvements				13,320
Costs capitalized subsequent to acquisition				9,503
Gross amount carried at close of period
Land and improvements				4,048
Buildings and improvements				22,112
Total	$ 26,160			26,160
Accumulated depreciation	$ (14,445)			(14,445)
Date of construction	1961
Date acquired	Sep-01
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 26,160
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (14,445)
Unencumbered Apartment Communities \| Capri at Sunny Hills \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities \| Capri at Sunny Hills \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| Carmel Creek
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	348
Initial cost
Land				26,842
Buildings and improvements				107,368
Costs capitalized subsequent to acquisition				6,878
Gross amount carried at close of period
Land and improvements				26,842
Buildings and improvements				114,246
Total	$ 141,088			141,088
Accumulated depreciation	$ (25,679)			(25,679)
Date of construction	2000
Date acquired	Apr-14
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 141,088
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (25,679)
Unencumbered Apartment Communities \| Carmel Creek \| Minimum
Gross amount carried at close of period
Life used for depreciation	5 years
Unencumbered Apartment Communities \| Carmel Creek \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| Carnel Landing
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	356
Initial cost
Land				16,725
Buildings and improvements				66,901
Costs capitalized subsequent to acquisition				9,043
Gross amount carried at close of period
Land and improvements				16,725
Buildings and improvements				75,944
Total	$ 92,669			92,669
Accumulated depreciation	$ (16,943)			(16,943)
Date of construction	1989
Date acquired	Apr-14
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 92,669
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (16,943)
Unencumbered Apartment Communities \| Carnel Landing \| Minimum
Gross amount carried at close of period
Life used for depreciation	5 years
Unencumbered Apartment Communities \| Carnel Landing \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| Carnel Summit
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	246
Initial cost
Land				14,968
Buildings and improvements				59,871
Costs capitalized subsequent to acquisition				4,154
Gross amount carried at close of period
Land and improvements				14,968
Buildings and improvements				64,025
Total	$ 78,993			78,993
Accumulated depreciation	$ (13,876)			(13,876)
Date of construction	1989
Date acquired	Apr-14
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 78,993
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (13,876)
Unencumbered Apartment Communities \| Carnel Summit \| Minimum
Gross amount carried at close of period
Life used for depreciation	5 years
Unencumbered Apartment Communities \| Carnel Summit \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| Castle Creek
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	216
Initial cost
Land				4,149
Buildings and improvements				16,028
Costs capitalized subsequent to acquisition				5,185
Gross amount carried at close of period
Land and improvements				4,833
Buildings and improvements				20,529
Total	$ 25,362			25,362
Accumulated depreciation	$ (14,880)			(14,880)
Date of construction	1998
Date acquired	Dec-98
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 25,362
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (14,880)
Unencumbered Apartment Communities \| Castle Creek \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities \| Castle Creek \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| Catalina Gardens
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	128
Initial cost
Land				6,714
Buildings and improvements				26,856
Costs capitalized subsequent to acquisition				1,970
Gross amount carried at close of period
Land and improvements				6,714
Buildings and improvements				28,826
Total	$ 35,540			35,540
Accumulated depreciation	$ (6,159)			(6,159)
Date of construction	1987
Date acquired	Apr-14
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 35,540
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (6,159)
Unencumbered Apartment Communities \| Catalina Gardens \| Minimum
Gross amount carried at close of period
Life used for depreciation	5 years
Unencumbered Apartment Communities \| Catalina Gardens \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| CBC Apartments and The Sweeps
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	239
Initial cost
Land				11,841
Buildings and improvements				45,320
Costs capitalized subsequent to acquisition				6,718
Gross amount carried at close of period
Land and improvements				11,906
Buildings and improvements				51,973
Total	$ 63,879			63,879
Accumulated depreciation	$ (26,615)			(26,615)
Date of construction	1962
Date acquired	Jan-06
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 63,879
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (26,615)
Unencumbered Apartment Communities \| CBC Apartments and The Sweeps \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities \| CBC Apartments and The Sweeps \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| Cedar Terrace
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	180
Initial cost
Land				5,543
Buildings and improvements				16,442
Costs capitalized subsequent to acquisition				8,092
Gross amount carried at close of period
Land and improvements				5,652
Buildings and improvements				24,425
Total	$ 30,077			30,077
Accumulated depreciation	$ (12,765)			(12,765)
Date of construction	1984
Date acquired	Jan-05
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 30,077
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (12,765)
Unencumbered Apartment Communities \| Cedar Terrace \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities \| Cedar Terrace \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| CentrePointe
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	224
Initial cost
Land				3,405
Buildings and improvements				7,743
Costs capitalized subsequent to acquisition				21,698
Gross amount carried at close of period
Land and improvements				3,442
Buildings and improvements				29,404
Total	$ 32,846			32,846
Accumulated depreciation	$ (20,349)			(20,349)
Date of construction	1974
Date acquired	Jun-97
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 32,846
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (20,349)
Unencumbered Apartment Communities \| CentrePointe \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities \| CentrePointe \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| Chestnut Street Apartments
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	96
Initial cost
Land				6,582
Buildings and improvements				15,689
Costs capitalized subsequent to acquisition				2,057
Gross amount carried at close of period
Land and improvements				6,582
Buildings and improvements				17,746
Total	$ 24,328			24,328
Accumulated depreciation	$ (7,206)			(7,206)
Date of construction	2002
Date acquired	Jul-08
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 24,328
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (7,206)
Unencumbered Apartment Communities \| Chestnut Street Apartments \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities \| Chestnut Street Apartments \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| Collins on Pine
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	76
Initial cost
Land				7,276
Buildings and improvements				22,226
Costs capitalized subsequent to acquisition				562
Gross amount carried at close of period
Land and improvements				7,276
Buildings and improvements				22,788
Total	$ 30,064			30,064
Accumulated depreciation	$ (4,337)			(4,337)
Date of construction	2013
Date acquired	May-14
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 30,064
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (4,337)
Unencumbered Apartment Communities \| Collins on Pine \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities \| Collins on Pine \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| Corbella at Juanita Bay
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	169
Initial cost
Land				5,801
Buildings and improvements				17,415
Costs capitalized subsequent to acquisition				3,815
Gross amount carried at close of period
Land and improvements				5,801
Buildings and improvements				21,230
Total	$ 27,031			27,031
Accumulated depreciation	$ (7,273)			(7,273)
Date of construction	1978
Date acquired	Nov-10
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 27,031
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (7,273)
Unencumbered Apartment Communities \| Corbella at Juanita Bay \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities \| Corbella at Juanita Bay \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| Cortesia
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	308
Initial cost
Land				13,912
Buildings and improvements				55,649
Costs capitalized subsequent to acquisition				3,034
Gross amount carried at close of period
Land and improvements				13,912
Buildings and improvements				58,683
Total	$ 72,595			72,595
Accumulated depreciation	$ (12,706)			(12,706)
Date of construction	1999
Date acquired	Apr-14
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 72,595
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (12,706)
Unencumbered Apartment Communities \| Cortesia \| Minimum
Gross amount carried at close of period
Life used for depreciation	5 years
Unencumbered Apartment Communities \| Cortesia \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| Country Villas
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	180
Initial cost
Land				4,174
Buildings and improvements				16,583
Costs capitalized subsequent to acquisition				5,358
Gross amount carried at close of period
Land and improvements				4,187
Buildings and improvements				21,928
Total	$ 26,115			26,115
Accumulated depreciation	$ (12,942)			(12,942)
Date of construction	1976
Date acquired	Dec-02
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 26,115
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (12,942)
Unencumbered Apartment Communities \| Country Villas \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities \| Country Villas \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| Courtyard off Main
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	110
Initial cost
Land				7,465
Buildings and improvements				21,405
Costs capitalized subsequent to acquisition				4,911
Gross amount carried at close of period
Land and improvements				7,465
Buildings and improvements				26,316
Total	$ 33,781			33,781
Accumulated depreciation	$ (8,924)			(8,924)
Date of construction	2000
Date acquired	Oct-10
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 33,781
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (8,924)
Unencumbered Apartment Communities \| Courtyard off Main \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities \| Courtyard off Main \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| Crow Canyon
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	400
Initial cost
Land				37,579
Buildings and improvements				87,685
Costs capitalized subsequent to acquisition				11,695
Gross amount carried at close of period
Land and improvements				37,579
Buildings and improvements				99,380
Total	$ 136,959			136,959
Accumulated depreciation	$ (22,121)			(22,121)
Date of construction	1992
Date acquired	Apr-14
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 136,959
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (22,121)
Unencumbered Apartment Communities \| Crow Canyon \| Minimum
Gross amount carried at close of period
Life used for depreciation	5 years
Unencumbered Apartment Communities \| Crow Canyon \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| Deer Valley
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	171
Initial cost
Land				21,478
Buildings and improvements				50,116
Costs capitalized subsequent to acquisition				3,175
Gross amount carried at close of period
Land and improvements				21,478
Buildings and improvements				53,291
Total	$ 74,769			74,769
Accumulated depreciation	$ (11,659)			(11,659)
Date of construction	1996
Date acquired	Apr-14
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 74,769
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (11,659)
Unencumbered Apartment Communities \| Deer Valley \| Minimum
Gross amount carried at close of period
Life used for depreciation	5 years
Unencumbered Apartment Communities \| Deer Valley \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| Delano
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	126
Initial cost
Land				7,470
Buildings and improvements				22,511
Costs capitalized subsequent to acquisition				1,655
Gross amount carried at close of period
Land and improvements				7,470
Buildings and improvements				24,166
Total	$ 31,636			31,636
Accumulated depreciation	$ (6,762)			(6,762)
Date of construction	2005
Date acquired	Dec-11
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 31,636
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (6,762)
Unencumbered Apartment Communities \| Delano \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities \| Delano \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| Devonshire
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	276
Initial cost
Land				3,470
Buildings and improvements				13,786
Costs capitalized subsequent to acquisition				5,988
Gross amount carried at close of period
Land and improvements				3,482
Buildings and improvements				19,762
Total	$ 23,244			23,244
Accumulated depreciation	$ (11,177)			(11,177)
Date of construction	1988
Date acquired	Dec-02
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 23,244
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (11,177)
Unencumbered Apartment Communities \| Devonshire \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities \| Devonshire \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| Elevation
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	158
Initial cost
Land				4,758
Buildings and improvements				14,285
Costs capitalized subsequent to acquisition				7,182
Gross amount carried at close of period
Land and improvements				4,757
Buildings and improvements				21,468
Total	$ 26,225			26,225
Accumulated depreciation	$ (9,807)			(9,807)
Date of construction	1986
Date acquired	Jun-10
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 26,225
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (9,807)
Unencumbered Apartment Communities \| Elevation \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities \| Elevation \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| Ellington
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	220
Initial cost
Land				15,066
Buildings and improvements				45,249
Costs capitalized subsequent to acquisition				3,914
Gross amount carried at close of period
Land and improvements				15,066
Buildings and improvements				49,163
Total	$ 64,229			64,229
Accumulated depreciation	$ (9,897)			(9,897)
Date of construction	1994
Date acquired	Jul-14
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 64,229
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (9,897)
Unencumbered Apartment Communities \| Ellington \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities \| Ellington \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| Emerald Pointe
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	160
Initial cost
Land				8,458
Buildings and improvements				33,832
Costs capitalized subsequent to acquisition				2,098
Gross amount carried at close of period
Land and improvements				8,458
Buildings and improvements				35,930
Total	$ 44,388			44,388
Accumulated depreciation	$ (7,907)			(7,907)
Date of construction	1989
Date acquired	Apr-14
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 44,388
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (7,907)
Unencumbered Apartment Communities \| Emerald Pointe \| Minimum
Gross amount carried at close of period
Life used for depreciation	5 years
Unencumbered Apartment Communities \| Emerald Pointe \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| Emerald Ridge
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	180
Initial cost
Land				3,449
Buildings and improvements				7,801
Costs capitalized subsequent to acquisition				6,444
Gross amount carried at close of period
Land and improvements				3,449
Buildings and improvements				14,245
Total	$ 17,694			17,694
Accumulated depreciation	$ (10,963)			(10,963)
Date of construction	1987
Date acquired	Nov-94
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 17,694
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (10,963)
Unencumbered Apartment Communities \| Emerald Ridge \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities \| Emerald Ridge \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| Emerson Valley Village
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	144
Initial cost
Land				13,378
Buildings and improvements				53,240
Costs capitalized subsequent to acquisition				979
Gross amount carried at close of period
Land and improvements				13,378
Buildings and improvements				54,219
Total	$ 67,597			67,597
Accumulated depreciation	$ (5,806)			(5,806)
Date of construction	2012
Date acquired	Dec-16
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 67,597
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (5,806)
Unencumbered Apartment Communities \| Emerson Valley Village \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities \| Emerson Valley Village \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| Enso
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	183
Initial cost
Land				21,397
Buildings and improvements				71,135
Costs capitalized subsequent to acquisition				1,630
Gross amount carried at close of period
Land and improvements				21,397
Buildings and improvements				72,765
Total	$ 94,162			94,162
Accumulated depreciation	$ (10,555)			(10,555)
Date of construction	2014
Date acquired	Dec-15
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 94,162
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (10,555)
Unencumbered Apartment Communities \| Enso \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities \| Enso \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| Esplanade
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	278
Initial cost
Land				18,170
Buildings and improvements				40,086
Costs capitalized subsequent to acquisition				15,809
Gross amount carried at close of period
Land and improvements				18,429
Buildings and improvements				55,636
Total	$ 74,065			74,065
Accumulated depreciation	$ (29,746)			(29,746)
Date of construction	2002
Date acquired	Apr-04
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 74,065
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (29,746)
Unencumbered Apartment Communities \| Esplanade \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities \| Esplanade \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| Essex Skyline
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	349
Initial cost
Land				21,537
Buildings and improvements				146,099
Costs capitalized subsequent to acquisition				10,028
Gross amount carried at close of period
Land and improvements				21,537
Buildings and improvements				156,127
Total	$ 177,664			177,664
Accumulated depreciation	$ (41,718)			(41,718)
Date of construction	2008
Date acquired	Apr-10
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 177,664
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (41,718)
Unencumbered Apartment Communities \| Essex Skyline \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities \| Essex Skyline \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| Evergreen Heights
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	200
Initial cost
Land				3,566
Buildings and improvements				13,395
Costs capitalized subsequent to acquisition				6,886
Gross amount carried at close of period
Land and improvements				3,649
Buildings and improvements				20,198
Total	$ 23,847			23,847
Accumulated depreciation	$ (14,843)			(14,843)
Date of construction	1990
Date acquired	Jun-97
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 23,847
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (14,843)
Unencumbered Apartment Communities \| Evergreen Heights \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities \| Evergreen Heights \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| Fairway Apartments at Big Canyon
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	74
Initial cost
Land				0
Buildings and improvements				7,850
Costs capitalized subsequent to acquisition				8,180
Gross amount carried at close of period
Land and improvements				0
Buildings and improvements				16,030
Total	$ 16,030			16,030
Accumulated depreciation	$ (11,744)			(11,744)
Date of construction	1972
Date acquired	Jun-99
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 16,030
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (11,744)
Unencumbered Apartment Communities \| Fairway Apartments at Big Canyon \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities \| Fairway Apartments at Big Canyon \| Maximum
Gross amount carried at close of period
Life used for depreciation	28 years
Unencumbered Apartment Communities \| Fairwood Pond
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	194
Initial cost
Land				5,296
Buildings and improvements				15,564
Costs capitalized subsequent to acquisition				4,408
Gross amount carried at close of period
Land and improvements				5,297
Buildings and improvements				19,971
Total	$ 25,268			25,268
Accumulated depreciation	$ (10,643)			(10,643)
Date of construction	1997
Date acquired	Oct-04
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 25,268
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (10,643)
Unencumbered Apartment Communities \| Fairwood Pond \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities \| Fairwood Pond \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| Foothill Commons
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	394
Initial cost
Land				2,435
Buildings and improvements				9,821
Costs capitalized subsequent to acquisition				41,492
Gross amount carried at close of period
Land and improvements				2,440
Buildings and improvements				51,308
Total	$ 53,748			53,748
Accumulated depreciation	$ (45,513)			(45,513)
Date of construction	1978
Date acquired	Mar-90
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 53,748
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (45,513)
Unencumbered Apartment Communities \| Foothill Commons \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities \| Foothill Commons \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| Foothill Gardens/Twin Creeks
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	176
Initial cost
Land				5,875
Buildings and improvements				13,992
Costs capitalized subsequent to acquisition				11,404
Gross amount carried at close of period
Land and improvements				5,964
Buildings and improvements				25,307
Total	$ 31,271			31,271
Accumulated depreciation	$ (18,366)			(18,366)
Date of construction	1985
Date acquired	Feb-97
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 31,271
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (18,366)
Unencumbered Apartment Communities \| Foothill Gardens/Twin Creeks \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities \| Foothill Gardens/Twin Creeks \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| Forest View
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	192
Initial cost
Land				3,731
Buildings and improvements				14,530
Costs capitalized subsequent to acquisition				3,095
Gross amount carried at close of period
Land and improvements				3,731
Buildings and improvements				17,625
Total	$ 21,356			21,356
Accumulated depreciation	$ (9,840)			(9,840)
Date of construction	1998
Date acquired	Oct-03
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 21,356
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (9,840)
Unencumbered Apartment Communities \| Forest View \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities \| Forest View \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| Foster's Landing
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	490
Initial cost
Land				61,714
Buildings and improvements				144,000
Costs capitalized subsequent to acquisition				10,178
Gross amount carried at close of period
Land and improvements				61,714
Buildings and improvements				154,178
Total	$ 215,892			215,892
Accumulated depreciation	$ (35,111)			(35,111)
Date of construction	1987
Date acquired	Apr-14
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 215,892
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (35,111)
Unencumbered Apartment Communities \| Fountain Court
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	320
Initial cost
Land				6,702
Buildings and improvements				27,306
Costs capitalized subsequent to acquisition				13,162
Gross amount carried at close of period
Land and improvements				6,985
Buildings and improvements				40,185
Total	$ 47,170			47,170
Accumulated depreciation	$ (28,006)			(28,006)
Date of construction	2000
Date acquired	Mar-00
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 47,170
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (28,006)
Unencumbered Apartment Communities \| Fountain Court \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities \| Fountain Court \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| Fountain At Riveroaks
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	226
Initial cost
Land				26,046
Buildings and improvements				60,773
Costs capitalized subsequent to acquisition				5,104
Gross amount carried at close of period
Land and improvements				26,046
Buildings and improvements				65,877
Total	$ 91,923			91,923
Accumulated depreciation	$ (14,742)			(14,742)
Date of construction	1990
Date acquired	Apr-14
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 91,923
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (14,742)
Unencumbered Apartment Communities \| Fountain At Riveroaks \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities \| Fountain At Riveroaks \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| Fourth & U
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	171
Initial cost
Land				8,879
Buildings and improvements				52,351
Costs capitalized subsequent to acquisition				3,967
Gross amount carried at close of period
Land and improvements				8,879
Buildings and improvements				56,318
Total	$ 65,197			65,197
Accumulated depreciation	$ (19,549)			(19,549)
Date of construction	2010
Date acquired	Apr-10
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 65,197
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (19,549)
Unencumbered Apartment Communities \| Fourth & U \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities \| Fourth & U \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| Fox Plaza
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	445
Initial cost
Land				39,731
Buildings and improvements				92,706
Costs capitalized subsequent to acquisition				35,532
Gross amount carried at close of period
Land and improvements				39,731
Buildings and improvements				128,238
Total	$ 167,969			167,969
Accumulated depreciation	$ (34,285)			(34,285)
Date of construction	1968
Date acquired	Feb-13
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 167,969
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (34,285)
Unencumbered Apartment Communities \| Fox Plaza \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities \| Fox Plaza \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| The Henley I/The Henley II
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	215
Initial cost
Land				6,695
Buildings and improvements				16,753
Costs capitalized subsequent to acquisition				27,953
Gross amount carried at close of period
Land and improvements				6,733
Buildings and improvements				44,668
Total	$ 51,401			51,401
Accumulated depreciation	$ (26,394)			(26,394)
Date of construction	1970
Date acquired	Jun-99
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 51,401
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (26,394)
Unencumbered Apartment Communities \| The Henley I/The Henley II \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities \| The Henley I/The Henley II \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| Highlands at Wynhaven
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	333
Initial cost
Land				16,271
Buildings and improvements				48,932
Costs capitalized subsequent to acquisition				14,851
Gross amount carried at close of period
Land and improvements				16,271
Buildings and improvements				63,783
Total	$ 80,054			80,054
Accumulated depreciation	$ (27,806)			(27,806)
Date of construction	2000
Date acquired	Aug-08
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 80,054
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (27,806)
Unencumbered Apartment Communities \| Highlands at Wynhaven \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities \| Highlands at Wynhaven \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| Hillcrest Park
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	608
Initial cost
Land				15,318
Buildings and improvements				40,601
Costs capitalized subsequent to acquisition				21,179
Gross amount carried at close of period
Land and improvements				15,755
Buildings and improvements				61,343
Total	$ 77,098			77,098
Accumulated depreciation	$ (42,560)			(42,560)
Date of construction	1973
Date acquired	Mar-98
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 77,098
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (42,560)
Unencumbered Apartment Communities \| Hillcrest Park \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities \| Hillcrest Park \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| Hillsdale Garden
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	697
Initial cost
Land				22,000
Buildings and improvements				94,681
Costs capitalized subsequent to acquisition				28,988
Gross amount carried at close of period
Land and improvements				22,000
Buildings and improvements				123,669
Total	$ 145,669			145,669
Accumulated depreciation	$ (58,877)			(58,877)
Date of construction	1948
Date acquired	Sep-06
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 145,669
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (58,877)
Unencumbered Apartment Communities \| Hillsdale Garden \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities \| Hillsdale Garden \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| Hope Ranch
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	108
Initial cost
Land				4,078
Buildings and improvements				16,877
Costs capitalized subsequent to acquisition				2,989
Gross amount carried at close of period
Land and improvements				4,208
Buildings and improvements				19,736
Total	$ 23,944			23,944
Accumulated depreciation	$ (8,757)			(8,757)
Date of construction	1965
Date acquired	Mar-07
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 23,944
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (8,757)
Unencumbered Apartment Communities \| Hope Ranch \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities \| Hope Ranch \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| Huntington Breakers
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	342
Initial cost
Land				9,306
Buildings and improvements				22,720
Costs capitalized subsequent to acquisition				21,487
Gross amount carried at close of period
Land and improvements				9,315
Buildings and improvements				44,198
Total	$ 53,513			53,513
Accumulated depreciation	$ (32,546)			(32,546)
Date of construction	1984
Date acquired	Oct-97
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 53,513
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (32,546)
Unencumbered Apartment Communities \| Huntington Breakers \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities \| Huntington Breakers \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| Inglenook Court
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	224
Initial cost
Land				3,467
Buildings and improvements				7,881
Costs capitalized subsequent to acquisition				8,307
Gross amount carried at close of period
Land and improvements				3,474
Buildings and improvements				16,181
Total	$ 19,655			19,655
Accumulated depreciation	$ (13,291)			(13,291)
Date of construction	1985
Date acquired	Oct-94
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 19,655
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (13,291)
Unencumbered Apartment Communities \| Inglenook Court \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities \| Inglenook Court \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| Lafayette Highlands
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	150
Initial cost
Land				17,774
Buildings and improvements				41,473
Costs capitalized subsequent to acquisition				3,526
Gross amount carried at close of period
Land and improvements				17,774
Buildings and improvements				44,999
Total	$ 62,773			62,773
Accumulated depreciation	$ (9,732)			(9,732)
Date of construction	1973
Date acquired	Apr-14
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 62,773
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (9,732)
Unencumbered Apartment Communities \| Lafayette Highlands \| Minimum
Gross amount carried at close of period
Life used for depreciation	5 years
Unencumbered Apartment Communities \| Lafayette Highlands \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| Lakeshore Landing
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	308
Initial cost
Land				38,155
Buildings and improvements				89,028
Costs capitalized subsequent to acquisition				8,183
Gross amount carried at close of period
Land and improvements				38,155
Buildings and improvements				97,211
Total	$ 135,366			135,366
Accumulated depreciation	$ (22,592)			(22,592)
Date of construction	1988
Date acquired	Apr-14
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 135,366
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (22,592)
Unencumbered Apartment Communities \| Lakeshore Landing \| Minimum
Gross amount carried at close of period
Life used for depreciation	5 years
Unencumbered Apartment Communities \| Lakeshore Landing \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| Laurels at Mill Creek
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	164
Initial cost
Land				1,559
Buildings and improvements				6,430
Costs capitalized subsequent to acquisition				8,202
Gross amount carried at close of period
Land and improvements				1,595
Buildings and improvements				14,596
Total	$ 16,191			16,191
Accumulated depreciation	$ (10,517)			(10,517)
Date of construction	1981
Date acquired	Dec-96
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 16,191
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (10,517)
Unencumbered Apartment Communities \| Laurels at Mill Creek \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities \| Laurels at Mill Creek \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| Lawrence Station
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	336
Initial cost
Land				45,532
Buildings and improvements				106,735
Costs capitalized subsequent to acquisition				2,006
Gross amount carried at close of period
Land and improvements				45,532
Buildings and improvements				108,741
Total	$ 154,273			154,273
Accumulated depreciation	$ (27,218)			(27,218)
Date of construction	2012
Date acquired	Apr-14
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 154,273
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (27,218)
Unencumbered Apartment Communities \| Lawrence Station \| Minimum
Gross amount carried at close of period
Life used for depreciation	5 years
Unencumbered Apartment Communities \| Lawrence Station \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| Le Parc
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	140
Initial cost
Land				3,090
Buildings and improvements				7,421
Costs capitalized subsequent to acquisition				13,782
Gross amount carried at close of period
Land and improvements				3,092
Buildings and improvements				21,201
Total	$ 24,293			24,293
Accumulated depreciation	$ (16,474)			(16,474)
Date of construction	1975
Date acquired	Feb-94
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 24,293
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (16,474)
Unencumbered Apartment Communities \| Le Parc \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities \| Le Parc \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| Marbrisa
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	202
Initial cost
Land				4,700
Buildings and improvements				18,605
Costs capitalized subsequent to acquisition				9,755
Gross amount carried at close of period
Land and improvements				4,760
Buildings and improvements				28,300
Total	$ 33,060			33,060
Accumulated depreciation	$ (17,214)			(17,214)
Date of construction	1987
Date acquired	Sep-02
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 33,060
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (17,214)
Unencumbered Apartment Communities \| Marbrisa \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities \| Marbrisa \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| Marina City Club
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	101
Initial cost
Land				0
Buildings and improvements				28,167
Costs capitalized subsequent to acquisition				31,783
Gross amount carried at close of period
Land and improvements				0
Buildings and improvements				59,950
Total	$ 59,950			59,950
Accumulated depreciation	$ (28,367)			(28,367)
Date of construction	1971
Date acquired	Jan-04
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 59,950
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (28,367)
Unencumbered Apartment Communities \| Marina City Club \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities \| Marina City Club \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| Marina Cove
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	292
Initial cost
Land				5,320
Buildings and improvements				16,431
Costs capitalized subsequent to acquisition				15,948
Gross amount carried at close of period
Land and improvements				5,324
Buildings and improvements				32,375
Total	$ 37,699			37,699
Accumulated depreciation	$ (26,197)			(26,197)
Date of construction	1974
Date acquired	Jun-94
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 37,699
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (26,197)
Unencumbered Apartment Communities \| Marina Cove \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities \| Marina Cove \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| Mariner's Place
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	105
Initial cost
Land				1,555
Buildings and improvements				6,103
Costs capitalized subsequent to acquisition				2,589
Gross amount carried at close of period
Land and improvements				1,562
Buildings and improvements				8,685
Total	$ 10,247			10,247
Accumulated depreciation	$ (6,020)			(6,020)
Date of construction	1987
Date acquired	May-00
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 10,247
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (6,020)
Unencumbered Apartment Communities \| Mariner's Place \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities \| Mariner's Place \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| MB 360
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	360
Initial cost
Land				42,001
Buildings and improvements				212,648
Costs capitalized subsequent to acquisition				11,373
Gross amount carried at close of period
Land and improvements				42,001
Buildings and improvements				224,021
Total	$ 266,022			266,022
Accumulated depreciation	$ (41,021)			(41,021)
Date of construction	2014
Date acquired	Apr-14
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 266,022
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (41,021)
Unencumbered Apartment Communities \| MB 360 \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities \| MB 360 \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| Mesa Village
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	133
Initial cost
Land				1,888
Buildings and improvements				7,498
Costs capitalized subsequent to acquisition				2,591
Gross amount carried at close of period
Land and improvements				1,894
Buildings and improvements				10,083
Total	$ 11,977			11,977
Accumulated depreciation	$ (5,624)			(5,624)
Date of construction	1963
Date acquired	Dec-02
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 11,977
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (5,624)
Unencumbered Apartment Communities \| Mesa Village \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities \| Mesa Village \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| Mill Creek at Windermere
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	400
Initial cost
Land				29,551
Buildings and improvements				69,032
Costs capitalized subsequent to acquisition				6,201
Gross amount carried at close of period
Land and improvements				29,551
Buildings and improvements				75,233
Total	$ 104,784			104,784
Accumulated depreciation	$ (31,986)			(31,986)
Date of construction	2005
Date acquired	Sep-07
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 104,784
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (31,986)
Unencumbered Apartment Communities \| Mill Creek at Windermere \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities \| Mill Creek at Windermere \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| Mio
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	103
Initial cost
Land				11,012
Buildings and improvements				39,982
Costs capitalized subsequent to acquisition				557
Gross amount carried at close of period
Land and improvements				11,012
Buildings and improvements				40,539
Total	$ 51,551			51,551
Accumulated depreciation	$ (5,695)			(5,695)
Date of construction	2015
Date acquired	Jan-16
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 51,551
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (5,695)
Unencumbered Apartment Communities \| Mio \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities \| Mio \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| Mirabella
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	188
Initial cost
Land				6,180
Buildings and improvements				26,673
Costs capitalized subsequent to acquisition				16,790
Gross amount carried at close of period
Land and improvements				6,270
Buildings and improvements				43,373
Total	$ 49,643			49,643
Accumulated depreciation	$ (26,253)			(26,253)
Date of construction	2000
Date acquired	May-00
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 49,643
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (26,253)
Unencumbered Apartment Communities \| Mirabella \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities \| Mirabella \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| Mira Monte
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	354
Initial cost
Land				7,165
Buildings and improvements				28,459
Costs capitalized subsequent to acquisition				11,933
Gross amount carried at close of period
Land and improvements				7,186
Buildings and improvements				40,371
Total	$ 47,557			47,557
Accumulated depreciation	$ (25,280)			(25,280)
Date of construction	1982
Date acquired	Dec-02
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 47,557
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (25,280)
Unencumbered Apartment Communities \| Mira Monte \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities \| Mira Monte \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| Miracle Mile Marbella
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	236
Initial cost
Land				7,791
Buildings and improvements				23,075
Costs capitalized subsequent to acquisition				15,151
Gross amount carried at close of period
Land and improvements				7,886
Buildings and improvements				38,131
Total	$ 46,017			46,017
Accumulated depreciation	$ (27,856)			(27,856)
Date of construction	1988
Date acquired	Aug-97
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 46,017
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (27,856)
Unencumbered Apartment Communities \| Miracle Mile Marbella \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities \| Miracle Mile Marbella \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| Mission Hills
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	282
Initial cost
Land				10,099
Buildings and improvements				38,778
Costs capitalized subsequent to acquisition				11,134
Gross amount carried at close of period
Land and improvements				10,167
Buildings and improvements				49,844
Total	$ 60,011			60,011
Accumulated depreciation	$ (24,458)			(24,458)
Date of construction	1984
Date acquired	Jul-05
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 60,011
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (24,458)
Unencumbered Apartment Communities \| Mission Hills \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities \| Mission Hills \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| Mission Peaks
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	453
Initial cost
Land				46,499
Buildings and improvements				108,498
Costs capitalized subsequent to acquisition				7,387
Gross amount carried at close of period
Land and improvements				46,499
Buildings and improvements				115,885
Total	$ 162,384			162,384
Accumulated depreciation	$ (25,036)			(25,036)
Date of construction	1995
Date acquired	Apr-14
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 162,384
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (25,036)
Unencumbered Apartment Communities \| Mission Peaks \| Minimum
Gross amount carried at close of period
Life used for depreciation	5 years
Unencumbered Apartment Communities \| Mission Peaks \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| Mission Peaks II
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	336
Initial cost
Land				31,429
Buildings and improvements				73,334
Costs capitalized subsequent to acquisition				7,308
Gross amount carried at close of period
Land and improvements				31,429
Buildings and improvements				80,642
Total	$ 112,071			112,071
Accumulated depreciation	$ (17,908)			(17,908)
Date of construction	1989
Date acquired	Apr-14
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 112,071
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (17,908)
Unencumbered Apartment Communities \| Mission Peaks II \| Minimum
Gross amount carried at close of period
Life used for depreciation	5 years
Unencumbered Apartment Communities \| Mission Peaks II \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| Montclaire
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	390
Initial cost
Land				4,842
Buildings and improvements				19,776
Costs capitalized subsequent to acquisition				28,185
Gross amount carried at close of period
Land and improvements				4,997
Buildings and improvements				47,806
Total	$ 52,803			52,803
Accumulated depreciation	$ (41,752)			(41,752)
Date of construction	1973
Date acquired	Dec-88
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 52,803
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (41,752)
Unencumbered Apartment Communities \| Montclaire \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities \| Montclaire \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| Monterey Villas
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	122
Initial cost
Land				2,349
Buildings and improvements				5,579
Costs capitalized subsequent to acquisition				6,873
Gross amount carried at close of period
Land and improvements				2,424
Buildings and improvements				12,377
Total	$ 14,801			14,801
Accumulated depreciation	$ (8,553)			(8,553)
Date of construction	1974
Date acquired	Jul-97
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 14,801
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (8,553)
Unencumbered Apartment Communities \| Monterey Villas \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities \| Monterey Villas \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| Muse
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	152
Initial cost
Land				7,822
Buildings and improvements				33,436
Costs capitalized subsequent to acquisition				3,466
Gross amount carried at close of period
Land and improvements				7,823
Buildings and improvements				36,901
Total	$ 44,724			44,724
Accumulated depreciation	$ (13,932)			(13,932)
Date of construction	2011
Date acquired	Feb-11
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 44,724
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (13,932)
Unencumbered Apartment Communities \| Muse \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities \| Muse \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| Museum Park
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	117
Initial cost
Land				13,864
Buildings and improvements				32,348
Costs capitalized subsequent to acquisition				2,012
Gross amount carried at close of period
Land and improvements				13,864
Buildings and improvements				34,360
Total	$ 48,224			48,224
Accumulated depreciation	$ (7,530)			(7,530)
Date of construction	2002
Date acquired	Apr-14
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 48,224
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (7,530)
Unencumbered Apartment Communities \| Museum Park \| Minimum
Gross amount carried at close of period
Life used for depreciation	5 years
Unencumbered Apartment Communities \| Museum Park \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| One South Market
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	312
Initial cost
Land				28,290
Buildings and improvements				148,649
Costs capitalized subsequent to acquisition				162
Gross amount carried at close of period
Land and improvements				28,290
Buildings and improvements				148,811
Total	$ 177,101			177,101
Accumulated depreciation	$ (3,931)			(3,931)
Date of construction	2015
Date acquired	Mar-19
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 177,101
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (3,931)
Unencumbered Apartment Communities \| One South Market \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities \| One South Market \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| Palm Valley
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	1,099
Initial cost
Land				133,802
Buildings and improvements				312,205
Costs capitalized subsequent to acquisition				15,296
Gross amount carried at close of period
Land and improvements				133,802
Buildings and improvements				327,501
Total	$ 461,303			461,303
Accumulated depreciation	$ (35,244)			(35,244)
Date of construction	2008
Date acquired	Jan-17
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 461,303
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (35,244)
Unencumbered Apartment Communities \| Palm Valley \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities \| Palm Valley \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| Paragon Apartments
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	301
Initial cost
Land				32,230
Buildings and improvements				77,320
Costs capitalized subsequent to acquisition				2,173
Gross amount carried at close of period
Land and improvements				32,230
Buildings and improvements				79,493
Total	$ 111,723			111,723
Accumulated depreciation	$ (14,796)			(14,796)
Date of construction	2013
Date acquired	Jul-14
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 111,723
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (14,796)
Unencumbered Apartment Communities \| Paragon Apartments \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities \| Paragon Apartments \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| Park Catalina
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	90
Initial cost
Land				4,710
Buildings and improvements				18,839
Costs capitalized subsequent to acquisition				3,372
Gross amount carried at close of period
Land and improvements				4,710
Buildings and improvements				22,211
Total	$ 26,921			26,921
Accumulated depreciation	$ (7,029)			(7,029)
Date of construction	2002
Date acquired	Jun-12
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 26,921
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (7,029)
Unencumbered Apartment Communities \| Park Catalina \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities \| Park Catalina \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| Park Highland
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	250
Initial cost
Land				9,391
Buildings and improvements				38,224
Costs capitalized subsequent to acquisition				12,981
Gross amount carried at close of period
Land and improvements				9,391
Buildings and improvements				51,205
Total	$ 60,596			60,596
Accumulated depreciation	$ (13,942)			(13,942)
Date of construction	1993
Date acquired	Apr-14
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 60,596
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (13,942)
Unencumbered Apartment Communities \| Park Highland \| Minimum
Gross amount carried at close of period
Life used for depreciation	5 years
Unencumbered Apartment Communities \| Park Highland \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| Park Hill at Issaquah
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	245
Initial cost
Land				7,284
Buildings and improvements				21,937
Costs capitalized subsequent to acquisition				10,119
Gross amount carried at close of period
Land and improvements				7,284
Buildings and improvements				32,056
Total	$ 39,340			39,340
Accumulated depreciation	$ (16,614)			(16,614)
Date of construction	1999
Date acquired	Feb-99
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 39,340
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (16,614)
Unencumbered Apartment Communities \| Park Hill at Issaquah \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities \| Park Hill at Issaquah \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| Park Viridian
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	320
Initial cost
Land				15,894
Buildings and improvements				63,574
Costs capitalized subsequent to acquisition				3,789
Gross amount carried at close of period
Land and improvements				15,894
Buildings and improvements				67,363
Total	$ 83,257			83,257
Accumulated depreciation	$ (14,776)			(14,776)
Date of construction	2008
Date acquired	Apr-14
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 83,257
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (14,776)
Unencumbered Apartment Communities \| Park Viridian \| Minimum
Gross amount carried at close of period
Life used for depreciation	5 years
Unencumbered Apartment Communities \| Park Viridian \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| Park West
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	126
Initial cost
Land				9,424
Buildings and improvements				21,988
Costs capitalized subsequent to acquisition				12,500
Gross amount carried at close of period
Land and improvements				9,424
Buildings and improvements				34,488
Total	$ 43,912			43,912
Accumulated depreciation	$ (11,971)			(11,971)
Date of construction	1958
Date acquired	Sep-12
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 43,912
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (11,971)
Unencumbered Apartment Communities \| Park West \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities \| Park West \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| Parkwood at Mill Creek
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	240
Initial cost
Land				10,680
Buildings and improvements				42,722
Costs capitalized subsequent to acquisition				3,376
Gross amount carried at close of period
Land and improvements				10,680
Buildings and improvements				46,098
Total	$ 56,778			56,778
Accumulated depreciation	$ (10,263)			(10,263)
Date of construction	1989
Date acquired	Apr-14
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 56,778
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (10,263)
Unencumbered Apartment Communities \| Parkwood at Mill Creek \| Minimum
Gross amount carried at close of period
Life used for depreciation	5 years
Unencumbered Apartment Communities \| Parkwood at Mill Creek \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| Patent 523
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	295
Initial cost
Land				14,558
Buildings and improvements				69,417
Costs capitalized subsequent to acquisition				5,923
Gross amount carried at close of period
Land and improvements				14,558
Buildings and improvements				75,340
Total	$ 89,898			89,898
Accumulated depreciation	$ (26,798)			(26,798)
Date of construction	2010
Date acquired	Mar-10
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 89,898
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (26,798)
Unencumbered Apartment Communities \| Patent 523 \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities \| Patent 523 \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| Pathways at Bixby Village
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	296
Initial cost
Land				4,083
Buildings and improvements				16,757
Costs capitalized subsequent to acquisition				21,850
Gross amount carried at close of period
Land and improvements				6,239
Buildings and improvements				36,451
Total	$ 42,690			42,690
Accumulated depreciation	$ (31,839)			(31,839)
Date of construction	1975
Date acquired	Feb-91
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 42,690
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (31,839)
Unencumbered Apartment Communities \| Pathways at Bixby Village \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities \| Pathways at Bixby Village \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| Piedmont
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	396
Initial cost
Land				19,848
Buildings and improvements				59,606
Costs capitalized subsequent to acquisition				12,913
Gross amount carried at close of period
Land and improvements				19,848
Buildings and improvements				72,519
Total	$ 92,367			92,367
Accumulated depreciation	$ (16,747)			(16,747)
Date of construction	1969
Date acquired	May-14
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 92,367
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (16,747)
Unencumbered Apartment Communities \| Piedmont \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities \| Piedmont \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| Pinehurst
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	28
Initial cost
Land				0
Buildings and improvements				1,711
Costs capitalized subsequent to acquisition				731
Gross amount carried at close of period
Land and improvements				0
Buildings and improvements				2,442
Total	$ 2,442			2,442
Accumulated depreciation	$ (1,517)			(1,517)
Date of construction	1973
Date acquired	Dec-04
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 2,442
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (1,517)
Unencumbered Apartment Communities \| Pinehurst \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities \| Pinehurst \| Maximum
Gross amount carried at close of period
Life used for depreciation	24 years
Unencumbered Apartment Communities \| Pinnacle at Fullerton
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	192
Initial cost
Land				11,019
Buildings and improvements				45,932
Costs capitalized subsequent to acquisition				3,983
Gross amount carried at close of period
Land and improvements				11,019
Buildings and improvements				49,915
Total	$ 60,934			60,934
Accumulated depreciation	$ (11,134)			(11,134)
Date of construction	2004
Date acquired	Apr-14
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 60,934
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (11,134)
Unencumbered Apartment Communities \| Pinnacle at Fullerton \| Minimum
Gross amount carried at close of period
Life used for depreciation	5 years
Unencumbered Apartment Communities \| Pinnacle at Fullerton \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| Pinnacle on Lake Washington
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	180
Initial cost
Land				7,760
Buildings and improvements				31,041
Costs capitalized subsequent to acquisition				3,513
Gross amount carried at close of period
Land and improvements				7,760
Buildings and improvements				34,554
Total	$ 42,314			42,314
Accumulated depreciation	$ (7,545)			(7,545)
Date of construction	2001
Date acquired	Apr-14
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 42,314
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (7,545)
Unencumbered Apartment Communities \| Pinnacle on Lake Washington \| Minimum
Gross amount carried at close of period
Life used for depreciation	5 years
Unencumbered Apartment Communities \| Pinnacle on Lake Washington \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| Pinnacle at MacArthur Place
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	253
Initial cost
Land				15,810
Buildings and improvements				66,401
Costs capitalized subsequent to acquisition				5,238
Gross amount carried at close of period
Land and improvements				15,810
Buildings and improvements				71,639
Total	$ 87,449			87,449
Accumulated depreciation	$ (15,689)			(15,689)
Date of construction	2002
Date acquired	Apr-14
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 87,449
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (15,689)
Unencumbered Apartment Communities \| Pinnacle at MacArthur Place \| Minimum
Gross amount carried at close of period
Life used for depreciation	5 years
Unencumbered Apartment Communities \| Pinnacle at MacArthur Place \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| Pinnacle at Otay Ranch I & II
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	364
Initial cost
Land				17,023
Buildings and improvements				68,093
Costs capitalized subsequent to acquisition				4,227
Gross amount carried at close of period
Land and improvements				17,023
Buildings and improvements				72,320
Total	$ 89,343			89,343
Accumulated depreciation	$ (15,862)			(15,862)
Date of construction	2001
Date acquired	Apr-14
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 89,343
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (15,862)
Unencumbered Apartment Communities \| Pinnacle at Otay Ranch I & II \| Minimum
Gross amount carried at close of period
Life used for depreciation	5 years
Unencumbered Apartment Communities \| Pinnacle at Otay Ranch I & II \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| Pinnacle at Talega
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	362
Initial cost
Land				19,292
Buildings and improvements				77,168
Costs capitalized subsequent to acquisition				3,097
Gross amount carried at close of period
Land and improvements				19,292
Buildings and improvements				80,265
Total	$ 99,557			99,557
Accumulated depreciation	$ (17,314)			(17,314)
Date of construction	2002
Date acquired	Apr-14
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 99,557
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (17,314)
Unencumbered Apartment Communities \| Pinnacle at Talega \| Minimum
Gross amount carried at close of period
Life used for depreciation	5 years
Unencumbered Apartment Communities \| Pinnacle at Talega \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| Pinnacle Sonata
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	268
Initial cost
Land				14,647
Buildings and improvements				58,586
Costs capitalized subsequent to acquisition				4,597
Gross amount carried at close of period
Land and improvements				14,647
Buildings and improvements				63,183
Total	$ 77,830			77,830
Accumulated depreciation	$ (13,613)			(13,613)
Date of construction	2000
Date acquired	Apr-14
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 77,830
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (13,613)
Unencumbered Apartment Communities \| Pinnacle Sonata \| Minimum
Gross amount carried at close of period
Life used for depreciation	5 years
Unencumbered Apartment Communities \| Pinnacle Sonata \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| Pointe at Cupertino
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	116
Initial cost
Land				4,505
Buildings and improvements				17,605
Costs capitalized subsequent to acquisition				12,637
Gross amount carried at close of period
Land and improvements				4,505
Buildings and improvements				30,242
Total	$ 34,747			34,747
Accumulated depreciation	$ (19,206)			(19,206)
Date of construction	1963
Date acquired	Aug-98
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 34,747
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (19,206)
Unencumbered Apartment Communities \| Pointe at Cupertino \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities \| Pointe at Cupertino \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| Pure Redmond
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	105
Initial cost
Land				7,461
Buildings and improvements				31,363
Costs capitalized subsequent to acquisition				0
Gross amount carried at close of period
Land and improvements				7,461
Buildings and improvements				31,363
Total	$ 38,824			38,824
Accumulated depreciation	$ (46)			(46)
Date of construction	2016
Date acquired	Dec-19
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 38,824
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (46)
Unencumbered Apartment Communities \| Pure Redmond \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities \| Pure Redmond \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| Radius
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	264
Initial cost
Land				11,702
Buildings and improvements				152,336
Costs capitalized subsequent to acquisition				904
Gross amount carried at close of period
Land and improvements				11,702
Buildings and improvements				153,240
Total	$ 164,942			164,942
Accumulated depreciation	$ (33,929)			(33,929)
Date of construction	2015
Date acquired	Apr-14
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 164,942
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (33,929)
Unencumbered Apartment Communities \| Radius \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities \| Radius \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| Reed Square
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	100
Initial cost
Land				6,873
Buildings and improvements				16,037
Costs capitalized subsequent to acquisition				8,451
Gross amount carried at close of period
Land and improvements				6,873
Buildings and improvements				24,488
Total	$ 31,361			31,361
Accumulated depreciation	$ (10,156)			(10,156)
Date of construction	1970
Date acquired	Jan-12
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 31,361
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (10,156)
Unencumbered Apartment Communities \| Reed Square \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities \| Reed Square \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| Regency at Encino
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	75
Initial cost
Land				3,184
Buildings and improvements				12,737
Costs capitalized subsequent to acquisition				3,911
Gross amount carried at close of period
Land and improvements				3,184
Buildings and improvements				16,648
Total	$ 19,832			19,832
Accumulated depreciation	$ (6,945)			(6,945)
Date of construction	1989
Date acquired	Dec-09
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 19,832
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (6,945)
Unencumbered Apartment Communities \| Regency at Encino \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities \| Regency at Encino \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| Renaissance at Uptown Orange
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	460
Initial cost
Land				27,870
Buildings and improvements				111,482
Costs capitalized subsequent to acquisition				6,212
Gross amount carried at close of period
Land and improvements				27,870
Buildings and improvements				117,694
Total	$ 145,564			145,564
Accumulated depreciation	$ (25,469)			(25,469)
Date of construction	2007
Date acquired	Apr-14
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 145,564
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (25,469)
Unencumbered Apartment Communities \| Renaissance at Uptown Orange \| Minimum
Gross amount carried at close of period
Life used for depreciation	5 years
Unencumbered Apartment Communities \| Renaissance at Uptown Orange \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| The Reveal
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	438
Initial cost
Land				25,073
Buildings and improvements				121,314
Costs capitalized subsequent to acquisition				2,446
Gross amount carried at close of period
Land and improvements				25,073
Buildings and improvements				123,760
Total	$ 148,833			148,833
Accumulated depreciation	$ (22,720)			(22,720)
Date of construction	2010
Date acquired	Apr-15
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 148,833
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (22,720)
Unencumbered Apartment Communities \| The Reveal \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities \| The Reveal \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| Salmon Run at Perry Creek
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	132
Initial cost
Land				3,717
Buildings and improvements				11,483
Costs capitalized subsequent to acquisition				2,941
Gross amount carried at close of period
Land and improvements				3,801
Buildings and improvements				14,340
Total	$ 18,141			18,141
Accumulated depreciation	$ (8,857)			(8,857)
Date of construction	2000
Date acquired	Oct-00
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 18,141
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (8,857)
Unencumbered Apartment Communities \| Salmon Run at Perry Creek \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities \| Salmon Run at Perry Creek \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| Sammamish View
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	153
Initial cost
Land				3,324
Buildings and improvements				7,501
Costs capitalized subsequent to acquisition				7,285
Gross amount carried at close of period
Land and improvements				3,331
Buildings and improvements				14,779
Total	$ 18,110			18,110
Accumulated depreciation	$ (12,571)			(12,571)
Date of construction	1986
Date acquired	Nov-94
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 18,110
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (12,571)
Unencumbered Apartment Communities \| Sammamish View \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities \| Sammamish View \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| 101 San Fernando
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	323
Initial cost
Land				4,173
Buildings and improvements				58,961
Costs capitalized subsequent to acquisition				13,374
Gross amount carried at close of period
Land and improvements				4,173
Buildings and improvements				72,335
Total	$ 76,508			76,508
Accumulated depreciation	$ (26,862)			(26,862)
Date of construction	2001
Date acquired	Jul-10
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 76,508
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (26,862)
Unencumbered Apartment Communities \| 101 San Fernando \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities \| 101 San Fernando \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| San Marcos
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	432
Initial cost
Land				15,563
Buildings and improvements				36,204
Costs capitalized subsequent to acquisition				33,430
Gross amount carried at close of period
Land and improvements				22,866
Buildings and improvements				62,331
Total	$ 85,197			85,197
Accumulated depreciation	$ (33,909)			(33,909)
Date of construction	2003
Date acquired	Nov-03
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 85,197
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (33,909)
Unencumbered Apartment Communities \| San Marcos \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities \| San Marcos \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| Santee Court/Santee Village
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	238
Initial cost
Land				9,581
Buildings and improvements				40,317
Costs capitalized subsequent to acquisition				11,607
Gross amount carried at close of period
Land and improvements				9,582
Buildings and improvements				51,923
Total	$ 61,505			61,505
Accumulated depreciation	$ (17,070)			(17,070)
Date of construction	2004
Date acquired	Oct-10
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 61,505
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (17,070)
Unencumbered Apartment Communities \| Santee Court/Santee Village \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities \| Santee Court/Santee Village \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| Shadow Point
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	172
Initial cost
Land				2,812
Buildings and improvements				11,170
Costs capitalized subsequent to acquisition				4,305
Gross amount carried at close of period
Land and improvements				2,820
Buildings and improvements				15,467
Total	$ 18,287			18,287
Accumulated depreciation	$ (8,864)			(8,864)
Date of construction	1983
Date acquired	Dec-02
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 18,287
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (8,864)
Unencumbered Apartment Communities \| Shadow Point \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities \| Shadow Point \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| Shadowbrook
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	418
Initial cost
Land				19,292
Buildings and improvements				77,168
Costs capitalized subsequent to acquisition				5,704
Gross amount carried at close of period
Land and improvements				19,292
Buildings and improvements				82,872
Total	$ 102,164			102,164
Accumulated depreciation	$ (18,117)			(18,117)
Date of construction	1986
Date acquired	Apr-14
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 102,164
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (18,117)
Unencumbered Apartment Communities \| Shadowbrook \| Minimum
Gross amount carried at close of period
Life used for depreciation	5 years
Unencumbered Apartment Communities \| Shadowbrook \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| Slater 116
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	108
Initial cost
Land				7,379
Buildings and improvements				22,138
Costs capitalized subsequent to acquisition				1,194
Gross amount carried at close of period
Land and improvements				7,379
Buildings and improvements				23,332
Total	$ 30,711			30,711
Accumulated depreciation	$ (5,181)			(5,181)
Date of construction	2013
Date acquired	Sep-13
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 30,711
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (5,181)
Unencumbered Apartment Communities \| Slater 116 \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities \| Slater 116 \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| Solstice
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	280
Initial cost
Land				34,444
Buildings and improvements				147,262
Costs capitalized subsequent to acquisition				6,544
Gross amount carried at close of period
Land and improvements				34,444
Buildings and improvements				153,806
Total	$ 188,250			188,250
Accumulated depreciation	$ (36,993)			(36,993)
Date of construction	2014
Date acquired	Apr-14
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 188,250
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (36,993)
Unencumbered Apartment Communities \| Solstice \| Minimum
Gross amount carried at close of period
Life used for depreciation	5 years
Unencumbered Apartment Communities \| Solstice \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| Station Park Green - Phase I
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	121
Initial cost
Land				14,923
Buildings and improvements				96,229
Costs capitalized subsequent to acquisition				5,610
Gross amount carried at close of period
Land and improvements				14,924
Buildings and improvements				101,838
Total	$ 116,762			116,762
Accumulated depreciation	$ (8,241)			(8,241)
Date of construction	2018
Date acquired	Mar-18
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 116,762
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (8,241)
Unencumbered Apartment Communities \| Station Park Green - Phase I \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities \| Station Park Green - Phase I \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| Stevenson Place
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	200
Initial cost
Land				996
Buildings and improvements				5,582
Costs capitalized subsequent to acquisition				13,651
Gross amount carried at close of period
Land and improvements				1,001
Buildings and improvements				19,228
Total	$ 20,229			20,229
Accumulated depreciation	$ (14,432)			(14,432)
Date of construction	1975
Date acquired	Apr-00
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 20,229
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (14,432)
Unencumbered Apartment Communities \| Stevenson Place \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities \| Stevenson Place \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| Stonehedge Village
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	196
Initial cost
Land				3,167
Buildings and improvements				12,603
Costs capitalized subsequent to acquisition				8,669
Gross amount carried at close of period
Land and improvements				3,201
Buildings and improvements				21,238
Total	$ 24,439			24,439
Accumulated depreciation	$ (14,829)			(14,829)
Date of construction	1986
Date acquired	Oct-97
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 24,439
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (14,829)
Unencumbered Apartment Communities \| Stonehedge Village \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities \| Stonehedge Village \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| Summerhill Park
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	100
Initial cost
Land				2,654
Buildings and improvements				4,918
Costs capitalized subsequent to acquisition				11,180
Gross amount carried at close of period
Land and improvements				2,656
Buildings and improvements				16,096
Total	$ 18,752			18,752
Accumulated depreciation	$ (11,728)			(11,728)
Date of construction	1988
Date acquired	Sep-88
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 18,752
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (11,728)
Unencumbered Apartment Communities \| Summerhill Park \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities \| Summerhill Park \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| Summit Park
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	300
Initial cost
Land				5,959
Buildings and improvements				23,670
Costs capitalized subsequent to acquisition				8,485
Gross amount carried at close of period
Land and improvements				5,977
Buildings and improvements				32,137
Total	$ 38,114			38,114
Accumulated depreciation	$ (18,375)			(18,375)
Date of construction	1972
Date acquired	Dec-02
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 38,114
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (18,375)
Unencumbered Apartment Communities \| Summit Park \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities \| Summit Park \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| Taylor 28
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	197
Initial cost
Land				13,915
Buildings and improvements				57,700
Costs capitalized subsequent to acquisition				3,391
Gross amount carried at close of period
Land and improvements				13,915
Buildings and improvements				61,091
Total	$ 75,006			75,006
Accumulated depreciation	$ (13,005)			(13,005)
Date of construction	2008
Date acquired	Apr-14
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 75,006
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (13,005)
Unencumbered Apartment Communities \| Taylor 28 \| Minimum
Gross amount carried at close of period
Life used for depreciation	5 years
Unencumbered Apartment Communities \| Taylor 28 \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| The Audrey at Belltown
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	137
Initial cost
Land				9,228
Buildings and improvements				36,911
Costs capitalized subsequent to acquisition				1,290
Gross amount carried at close of period
Land and improvements				9,228
Buildings and improvements				38,201
Total	$ 47,429			47,429
Accumulated depreciation	$ (8,013)			(8,013)
Date of construction	1992
Date acquired	Apr-14
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 47,429
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (8,013)
Unencumbered Apartment Communities \| The Audrey at Belltown \| Minimum
Gross amount carried at close of period
Life used for depreciation	5 years
Unencumbered Apartment Communities \| The Audrey at Belltown \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| The Avery
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	121
Initial cost
Land				6,964
Buildings and improvements				29,922
Costs capitalized subsequent to acquisition				726
Gross amount carried at close of period
Land and improvements				6,964
Buildings and improvements				30,648
Total	$ 37,612			37,612
Accumulated depreciation	$ (5,957)			(5,957)
Date of construction	2014
Date acquired	Mar-14
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 37,612
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (5,957)
Unencumbered Apartment Communities \| The Avery \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities \| The Avery \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| The Bernard
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	63
Initial cost
Land				3,699
Buildings and improvements				11,345
Costs capitalized subsequent to acquisition				800
Gross amount carried at close of period
Land and improvements				3,689
Buildings and improvements				12,155
Total	$ 15,844			15,844
Accumulated depreciation	$ (3,574)			(3,574)
Date of construction	2008
Date acquired	Sep-11
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 15,844
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (3,574)
Unencumbered Apartment Communities \| The Bernard \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities \| The Bernard \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| The Blake LA
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	196
Initial cost
Land				4,023
Buildings and improvements				9,527
Costs capitalized subsequent to acquisition				22,158
Gross amount carried at close of period
Land and improvements				4,031
Buildings and improvements				31,677
Total	$ 35,708			35,708
Accumulated depreciation	$ (18,135)			(18,135)
Date of construction	1979
Date acquired	Jun-97
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 35,708
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (18,135)
Unencumbered Apartment Communities \| The Blake LA \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities \| The Blake LA \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| The Cairns
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	99
Initial cost
Land				6,937
Buildings and improvements				20,679
Costs capitalized subsequent to acquisition				2,389
Gross amount carried at close of period
Land and improvements				6,939
Buildings and improvements				23,066
Total	$ 30,005			30,005
Accumulated depreciation	$ (9,915)			(9,915)
Date of construction	2006
Date acquired	Jun-07
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 30,005
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (9,915)
Unencumbered Apartment Communities \| The Cairns \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities \| The Cairns \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| The Commons
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	264
Initial cost
Land				12,555
Buildings and improvements				29,307
Costs capitalized subsequent to acquisition				9,206
Gross amount carried at close of period
Land and improvements				12,556
Buildings and improvements				38,512
Total	$ 51,068			51,068
Accumulated depreciation	$ (14,792)			(14,792)
Date of construction	1973
Date acquired	Jul-10
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 51,068
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (14,792)
Unencumbered Apartment Communities \| The Commons \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities \| The Commons \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| The Elliot at Mukilteo
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	301
Initial cost
Land				2,498
Buildings and improvements				10,595
Costs capitalized subsequent to acquisition				17,699
Gross amount carried at close of period
Land and improvements				2,824
Buildings and improvements				27,968
Total	$ 30,792			30,792
Accumulated depreciation	$ (21,381)			(21,381)
Date of construction	1981
Date acquired	Jan-97
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 30,792
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (21,381)
Unencumbered Apartment Communities \| The Elliot at Mukilteo \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities \| The Elliot at Mukilteo \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| The Grand
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	243
Initial cost
Land				4,531
Buildings and improvements				89,208
Costs capitalized subsequent to acquisition				7,334
Gross amount carried at close of period
Land and improvements				4,531
Buildings and improvements				96,542
Total	$ 101,073			101,073
Accumulated depreciation	$ (37,589)			(37,589)
Date of construction	2009
Date acquired	Jan-09
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 101,073
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (37,589)
Unencumbered Apartment Communities \| The Grand \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities \| The Grand \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| The Hallie
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	292
Initial cost
Land				2,202
Buildings and improvements				4,794
Costs capitalized subsequent to acquisition				54,674
Gross amount carried at close of period
Land and improvements				8,385
Buildings and improvements				53,285
Total	$ 61,670			61,670
Accumulated depreciation	$ (35,599)			(35,599)
Date of construction	1972
Date acquired	Apr-97
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 61,670
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (35,599)
Unencumbered Apartment Communities \| The Hallie \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities \| The Hallie \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| The Huntington
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	276
Initial cost
Land				10,374
Buildings and improvements				41,495
Costs capitalized subsequent to acquisition				5,741
Gross amount carried at close of period
Land and improvements				10,374
Buildings and improvements				47,236
Total	$ 57,610			57,610
Accumulated depreciation	$ (13,725)			(13,725)
Date of construction	1975
Date acquired	Jun-12
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 57,610
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (13,725)
Unencumbered Apartment Communities \| The Huntington \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities \| The Huntington \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| The Landing at Jack London Square
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	282
Initial cost
Land				33,554
Buildings and improvements				78,292
Costs capitalized subsequent to acquisition				6,329
Gross amount carried at close of period
Land and improvements				33,554
Buildings and improvements				84,621
Total	$ 118,175			118,175
Accumulated depreciation	$ (19,726)			(19,726)
Date of construction	2001
Date acquired	Apr-14
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 118,175
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (19,726)
Unencumbered Apartment Communities \| The Landing at Jack London Square \| Minimum
Gross amount carried at close of period
Life used for depreciation	5 years
Unencumbered Apartment Communities \| The Landing at Jack London Square \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| The Lofts at Pinehurst
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	118
Initial cost
Land				1,570
Buildings and improvements				3,912
Costs capitalized subsequent to acquisition				5,499
Gross amount carried at close of period
Land and improvements				1,618
Buildings and improvements				9,363
Total	$ 10,981			10,981
Accumulated depreciation	$ (6,164)			(6,164)
Date of construction	1971
Date acquired	Jun-97
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 10,981
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (6,164)
Unencumbered Apartment Communities \| The Lofts at Pinehurst \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities \| The Lofts at Pinehurst \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| The Palisades
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	192
Initial cost
Land				1,560
Buildings and improvements				6,242
Costs capitalized subsequent to acquisition				13,743
Gross amount carried at close of period
Land and improvements				1,565
Buildings and improvements				19,980
Total	$ 21,545			21,545
Accumulated depreciation	$ (17,648)			(17,648)
Date of construction	1977
Date acquired	May-90
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 21,545
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (17,648)
Unencumbered Apartment Communities \| The Palisades \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities \| The Palisades \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| The Palms at Laguna Niguel
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	460
Initial cost
Land				23,584
Buildings and improvements				94,334
Costs capitalized subsequent to acquisition				9,442
Gross amount carried at close of period
Land and improvements				23,584
Buildings and improvements				103,776
Total	$ 127,360			127,360
Accumulated depreciation	$ (23,149)			(23,149)
Date of construction	1988
Date acquired	Apr-14
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 127,360
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (23,149)
Unencumbered Apartment Communities \| The Palms at Laguna Niguel \| Minimum
Gross amount carried at close of period
Life used for depreciation	5 years
Unencumbered Apartment Communities \| The Palms at Laguna Niguel \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| The Stuart
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	188
Initial cost
Land				13,574
Buildings and improvements				54,298
Costs capitalized subsequent to acquisition				2,693
Gross amount carried at close of period
Land and improvements				13,574
Buildings and improvements				56,991
Total	$ 70,565			70,565
Accumulated depreciation	$ (12,753)			(12,753)
Date of construction	2007
Date acquired	Apr-14
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 70,565
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (12,753)
Unencumbered Apartment Communities \| The Stuart \| Minimum
Gross amount carried at close of period
Life used for depreciation	5 years
Unencumbered Apartment Communities \| The Stuart \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| The Trails of Redmond
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	423
Initial cost
Land				21,930
Buildings and improvements				87,720
Costs capitalized subsequent to acquisition				5,406
Gross amount carried at close of period
Land and improvements				21,930
Buildings and improvements				93,126
Total	$ 115,056			115,056
Accumulated depreciation	$ (20,366)			(20,366)
Date of construction	1985
Date acquired	Apr-14
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 115,056
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (20,366)
Unencumbered Apartment Communities \| The Trails of Redmond \| Minimum
Gross amount carried at close of period
Life used for depreciation	5 years
Unencumbered Apartment Communities \| The Trails of Redmond \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| Tierra Vista
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	404
Initial cost
Land				13,652
Buildings and improvements				53,336
Costs capitalized subsequent to acquisition				6,023
Gross amount carried at close of period
Land and improvements				13,661
Buildings and improvements				59,350
Total	$ 73,011			73,011
Accumulated depreciation	$ (32,123)			(32,123)
Date of construction	2001
Date acquired	Jan-01
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 73,011
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (32,123)
Unencumbered Apartment Communities \| Tierra Vista \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities \| Tierra Vista \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| Tiffany Court
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	101
Initial cost
Land				6,949
Buildings and improvements				27,796
Costs capitalized subsequent to acquisition				1,857
Gross amount carried at close of period
Land and improvements				6,949
Buildings and improvements				29,653
Total	$ 36,602			36,602
Accumulated depreciation	$ (6,429)			(6,429)
Date of construction	1987
Date acquired	Apr-14
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 36,602
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (6,429)
Unencumbered Apartment Communities \| Tiffany Court \| Minimum
Gross amount carried at close of period
Life used for depreciation	5 years
Unencumbered Apartment Communities \| Tiffany Court \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| Trabucco Villas
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	132
Initial cost
Land				3,638
Buildings and improvements				8,640
Costs capitalized subsequent to acquisition				4,061
Gross amount carried at close of period
Land and improvements				3,890
Buildings and improvements				12,449
Total	$ 16,339			16,339
Accumulated depreciation	$ (8,740)			(8,740)
Date of construction	1985
Date acquired	Oct-97
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 16,339
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (8,740)
Unencumbered Apartment Communities \| Trabucco Villas \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities \| Trabucco Villas \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| Via
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	284
Initial cost
Land				22,000
Buildings and improvements				82,270
Costs capitalized subsequent to acquisition				3,189
Gross amount carried at close of period
Land and improvements				22,016
Buildings and improvements				85,443
Total	$ 107,459			107,459
Accumulated depreciation	$ (27,803)			(27,803)
Date of construction	2011
Date acquired	Jul-11
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 107,459
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (27,803)
Unencumbered Apartment Communities \| Via \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities \| Via \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| Villa Granada
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	270
Initial cost
Land				38,299
Buildings and improvements				89,365
Costs capitalized subsequent to acquisition				2,200
Gross amount carried at close of period
Land and improvements				38,299
Buildings and improvements				91,565
Total	$ 129,864			129,864
Accumulated depreciation	$ (19,559)			(19,559)
Date of construction	2010
Date acquired	Apr-14
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 129,864
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (19,559)
Unencumbered Apartment Communities \| Villa Granada \| Minimum
Gross amount carried at close of period
Life used for depreciation	5 years
Unencumbered Apartment Communities \| Villa Granada \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| Villa Siena
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	272
Initial cost
Land				13,842
Buildings and improvements				55,367
Costs capitalized subsequent to acquisition				8,399
Gross amount carried at close of period
Land and improvements				13,842
Buildings and improvements				63,766
Total	$ 77,608			77,608
Accumulated depreciation	$ (14,671)			(14,671)
Date of construction	1974
Date acquired	Apr-14
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 77,608
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (14,671)
Unencumbered Apartment Communities \| Villa Siena \| Minimum
Gross amount carried at close of period
Life used for depreciation	5 years
Unencumbered Apartment Communities \| Villa Siena \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| Village Green
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	272
Initial cost
Land				6,488
Buildings and improvements				36,768
Costs capitalized subsequent to acquisition				4,061
Gross amount carried at close of period
Land and improvements				6,488
Buildings and improvements				40,829
Total	$ 47,317			47,317
Accumulated depreciation	$ (9,428)			(9,428)
Date of construction	1971
Date acquired	Apr-14
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 47,317
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (9,428)
Unencumbered Apartment Communities \| Village Green \| Minimum
Gross amount carried at close of period
Life used for depreciation	5 years
Unencumbered Apartment Communities \| Village Green \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| Vista Belvedere
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	76
Initial cost
Land				5,573
Buildings and improvements				11,901
Costs capitalized subsequent to acquisition				8,844
Gross amount carried at close of period
Land and improvements				5,573
Buildings and improvements				20,745
Total	$ 26,318			26,318
Accumulated depreciation	$ (12,068)			(12,068)
Date of construction	1963
Date acquired	Aug-04
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 26,318
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (12,068)
Unencumbered Apartment Communities \| Vista Belvedere \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities \| Vista Belvedere \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| Vox Apartments
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	58
Initial cost
Land				5,545
Buildings and improvements				16,635
Costs capitalized subsequent to acquisition				408
Gross amount carried at close of period
Land and improvements				5,545
Buildings and improvements				17,043
Total	$ 22,588			22,588
Accumulated depreciation	$ (3,543)			(3,543)
Date of construction	2013
Date acquired	Oct-13
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 22,588
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (3,543)
Unencumbered Apartment Communities \| Vox Apartments \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities \| Vox Apartments \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| Walnut Heights
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	163
Initial cost
Land				4,858
Buildings and improvements				19,168
Costs capitalized subsequent to acquisition				5,645
Gross amount carried at close of period
Land and improvements				4,887
Buildings and improvements				24,784
Total	$ 29,671			29,671
Accumulated depreciation	$ (13,726)			(13,726)
Date of construction	1964
Date acquired	Oct-03
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 29,671
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (13,726)
Unencumbered Apartment Communities \| Walnut Heights \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities \| Walnut Heights \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| Wandering Creek
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	156
Initial cost
Land				1,285
Buildings and improvements				4,980
Costs capitalized subsequent to acquisition				5,152
Gross amount carried at close of period
Land and improvements				1,296
Buildings and improvements				10,121
Total	$ 11,417			11,417
Accumulated depreciation	$ (7,945)			(7,945)
Date of construction	1986
Date acquired	Nov-95
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 11,417
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (7,945)
Unencumbered Apartment Communities \| Wandering Creek \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities \| Wandering Creek \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| Wharfside Pointe
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	155
Initial cost
Land				2,245
Buildings and improvements				7,020
Costs capitalized subsequent to acquisition				12,465
Gross amount carried at close of period
Land and improvements				2,258
Buildings and improvements				19,472
Total	$ 21,730			21,730
Accumulated depreciation	$ (14,892)			(14,892)
Date of construction	1990
Date acquired	Jun-94
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 21,730
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (14,892)
Unencumbered Apartment Communities \| Wharfside Pointe \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities \| Wharfside Pointe \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| Willow Lake
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	508
Initial cost
Land				43,194
Buildings and improvements				101,030
Costs capitalized subsequent to acquisition				15,998
Gross amount carried at close of period
Land and improvements				43,194
Buildings and improvements				117,028
Total	$ 160,222			160,222
Accumulated depreciation	$ (32,271)			(32,271)
Date of construction	1989
Date acquired	Oct-12
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 160,222
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (32,271)
Unencumbered Apartment Communities \| Willow Lake \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities \| Willow Lake \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| 5600 Wilshire
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	284
Initial cost
Land				30,535
Buildings and improvements				91,604
Costs capitalized subsequent to acquisition				4,495
Gross amount carried at close of period
Land and improvements				30,535
Buildings and improvements				96,099
Total	$ 126,634			126,634
Accumulated depreciation	$ (20,175)			(20,175)
Date of construction	2008
Date acquired	Apr-14
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 126,634
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (20,175)
Unencumbered Apartment Communities \| 5600 Wilshire \| Minimum
Gross amount carried at close of period
Life used for depreciation	5 years
Unencumbered Apartment Communities \| 5600 Wilshire \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| Wilshire La Brea
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	478
Initial cost
Land				56,932
Buildings and improvements				211,998
Costs capitalized subsequent to acquisition				11,252
Gross amount carried at close of period
Land and improvements				56,932
Buildings and improvements				223,250
Total	$ 280,182			280,182
Accumulated depreciation	$ (52,822)			(52,822)
Date of construction	2014
Date acquired	Apr-14
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 280,182
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (52,822)
Unencumbered Apartment Communities \| Wilshire La Brea \| Minimum
Gross amount carried at close of period
Life used for depreciation	5 years
Unencumbered Apartment Communities \| Wilshire La Brea \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| Wilshire Promenade
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	149
Initial cost
Land				3,118
Buildings and improvements				7,385
Costs capitalized subsequent to acquisition				10,727
Gross amount carried at close of period
Land and improvements				3,797
Buildings and improvements				17,433
Total	$ 21,230			21,230
Accumulated depreciation	$ (11,640)			(11,640)
Date of construction	1992
Date acquired	Jan-97
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 21,230
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (11,640)
Unencumbered Apartment Communities \| Wilshire Promenade \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities \| Wilshire Promenade \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| Windsor Ridge
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	216
Initial cost
Land				4,017
Buildings and improvements				10,315
Costs capitalized subsequent to acquisition				16,759
Gross amount carried at close of period
Land and improvements				4,021
Buildings and improvements				27,070
Total	$ 31,091			31,091
Accumulated depreciation	$ (22,682)			(22,682)
Date of construction	1989
Date acquired	Mar-89
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 31,091
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (22,682)
Unencumbered Apartment Communities \| Windsor Ridge \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities \| Windsor Ridge \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| Woodland Commons
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	302
Initial cost
Land				2,040
Buildings and improvements				8,727
Costs capitalized subsequent to acquisition				24,610
Gross amount carried at close of period
Land and improvements				2,044
Buildings and improvements				33,333
Total	$ 35,377			35,377
Accumulated depreciation	$ (22,838)			(22,838)
Date of construction	1978
Date acquired	Mar-90
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 35,377
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (22,838)
Unencumbered Apartment Communities \| Woodland Commons \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities \| Woodland Commons \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Unencumbered Apartment Communities \| Woodside Village
Real Estate and Accumulated Depreciation [Line Items]
Units \| apartment	145
Initial cost
Land				5,331
Buildings and improvements				21,036
Costs capitalized subsequent to acquisition				5,387
Gross amount carried at close of period
Land and improvements				5,341
Buildings and improvements				26,413
Total	$ 31,754			31,754
Accumulated depreciation	$ (13,691)			$ (13,691)
Date of construction	1987
Date acquired	Dec-04
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	$ 31,754
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	$ (13,691)
Unencumbered Apartment Communities \| Woodside Village \| Minimum
Gross amount carried at close of period
Life used for depreciation	3 years
Unencumbered Apartment Communities \| Woodside Village \| Maximum
Gross amount carried at close of period
Life used for depreciation	30 years
Other Property
Real Estate and Accumulated Depreciation [Line Items]
Area of real estate property \| ft²
Initial cost
Land				$ 3,079
Buildings and improvements				12,315
Costs capitalized subsequent to acquisition				12,183
Gross amount carried at close of period
Land and improvements				3,909
Buildings and improvements				23,668
Total	$ 27,577			27,577
Accumulated depreciation	(15,356)			(15,356)
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	27,577
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	(15,356)
Other Property \| Other real estate assets
Initial cost
Land				3,079
Buildings and improvements				12,315
Costs capitalized subsequent to acquisition				12,183
Gross amount carried at close of period
Land and improvements				3,909
Buildings and improvements				23,668
Total	27,577			27,577
Accumulated depreciation	(15,356)			(15,356)
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of year	27,577
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of year	(15,356)
Real Estate Rental Property
Gross amount carried at close of period
Total	13,366,101	13,366,101	12,687,722	$ 14,038,142
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at beginning of year	13,366,101	13,362,073	12,687,722
Balance at the end of year	$ 14,038,142	$ 13,366,101	$ 13,362,073

Uncategorized Items - ess-12311

Label	Element	Value
Accounting Standards Update 2017-05 [Member] \| Accumulated Distributions in Excess of Net Income [Member]
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	$ 119,651,000
Accounting Standards Update 2017-05 [Member] \| Noncontrolling Interest [Member]
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	4,057,000
Accounting Standards Update 2016-01 [Member] \| AOCI Attributable to Parent [Member]
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	(2,234,000)
Accounting Standards Update 2016-01 [Member] \| Accumulated Distributions in Excess of Net Income [Member]
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	2,234,000
Accounting Standards Update 2017-12 [Member]
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	181,000
Accounting Standards Update 2017-12 [Member] \| AOCI Attributable to Parent [Member]
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	175,000
Accounting Standards Update 2017-12 [Member] \| Noncontrolling Interest [Member]
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	$ 6,000