make no assurance that Estimated Potential Development Density amounts will become actual density to the extent we complete development of assets for which we have made such estimates.
"Estimated Total Investment" means, with respect to the development of an asset, the sum of the Historical Cost in such asset and the Estimated Incremental Investment for such asset. Actual total investment may differ substantially from our estimates due to numerous factors, including unanticipated expenses, delays in the estimated start and/or completion date, changes in design and other contingencies.
"First-generation" is a lease on space that had been vacant for at least nine months or a lease on newly delivered space.
"Formation Transaction" refers collectively to the spin-off on July 17, 2017 of substantially all of the assets and liabilities of Vornado Realty Trust's Washington, DC segment, which operated as Vornado / Charles E. Smith, and the acquisition of the management business and certain assets and liabilities of The JBG Companies.
"Free Rent" means the amount of base rent and tenant reimbursements that are abated according to the applicable lease agreement(s).
Funds from Operations ("FFO"), "Core FFO" and Funds Available for Distribution ("FAD") are non-GAAP financial measures. FFO is computed in accordance with the definition established by Nareit in the Nareit FFO White Paper - 2018 Restatement. Nareit defines FFO as net income (loss) (computed in accordance with GAAP), excluding depreciation and amortization expense related to real estate, gains and losses from the sale of certain real estate assets, gains and losses from change in control and impairment write-downs of certain real estate assets and investments in entities when the impairment is directly attributable to decreases in the value of depreciable real estate held by the entity, including our share of such adjustments for unconsolidated real estate ventures.
Core FFO represents FFO adjusted to exclude items which we believe are not representative of ongoing operating results, such as Transaction and Other Costs, impairment write-downs of non-depreciable real estate, gain (loss) on the extinguishment of debt, earnings (losses) and distributions in excess of our investment in unconsolidated real estate ventures, share-based compensation expense related to the Formation Transaction and special equity awards, lease liability adjustments, income from investments, business interruption insurance proceeds, litigation settlement proceeds, amortization of the management contracts intangible and the mark-to-market of derivative instruments, including our share of such adjustments for unconsolidated real estate ventures.
FAD represents Core FFO adjusted for recurring tenant improvements, leasing commissions and other capital expenditures, net deferred rent activity, third-party lease liability assumption (payments) refunds, recurring share-based compensation expense, accretion of acquired below-market leases, net of amortization of acquired above-market leases, amortization of debt issuance costs and other non-cash income and charges, including our share of such adjustments for unconsolidated real estate ventures. FAD is presented solely as a supplemental disclosure that management believes provides useful information as it relates to our ability to fund dividends.
We believe FFO, Core FFO and FAD are meaningful non-GAAP financial measures useful in comparing our levered operating performance from period-to-period and as compared to similar real estate companies because these non-GAAP measures exclude real estate depreciation and amortization expense, which implicitly assumes that the value of real estate diminishes predictably over time rather than fluctuating based on market conditions, and other non-comparable income and expenses. FFO, Core FFO and FAD do not represent cash generated from operating activities and are not necessarily indicative of cash available to fund cash requirements and should not be considered as an alternative to net income (loss) (computed in accordance with GAAP) as a performance measure or cash flow as a liquidity measure. FFO, Core FFO and FAD may not be comparable to similarly titled measures used by other companies. A reconciliation of net income (loss) to FFO, Core FFO and FAD is presented on pages 14-15.
"GAAP" means accounting principles generally accepted in the United States of America.
"Historical Cost" is a non-GAAP measure which includes the total Historical Cost incurred by JBG SMITH with respect to the development of an asset, including any acquisition costs, hard costs, soft costs, tenant improvements (excluding Free Rent converted to tenant improvement allowances), leasing costs and other similar costs, but excluding any financing costs and ground rent expenses incurred as of June 30, 2024.