| Cover | Mar. 28, 2024 |
| Document Information [Line Items] | |
| Document Type | 8-K |
| Document Period End Date | Mar. 28, 2024 |
| Entity Registrant Name | Better Home & Finance Holding Company |
| Entity Incorporation, State or Country Code | DE |
| Entity File Number | 001-40143 |
| Entity Tax Identification Number | 93-3029990 |
| Entity Address, Address Line One | 3 World Trade Center |
| Entity Address, Address Line Two | 175 Greenwich Street, 57th Floor |
| Entity Address, City or Town | New York, |
| Entity Address, State or Province | NY |
| Entity Address, Postal Zip Code | 10007 |
| City Area Code | 415 |
| Local Phone Number | 523-8837 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | true |
| Entity Ex Transition Period | false |
| Entity Central Index Key | 0001835856 |
| Amendment Flag | false |
| Class A common stock, par value $0.0001 per share | |
| Document Information [Line Items] | |
| Title of 12(b) Security | Class A common stock, par value $0.0001 per share |
| Trading Symbol | BETR |
| Security Exchange Name | NASDAQ |
| Warrants exercisable for one share of Class A common stock at an exercise price of $11.50 | |
| Document Information [Line Items] | |
| Title of 12(b) Security | Warrants exercisable for one share of Class A common stock at an exercise price of $11.50 |
| Trading Symbol | BETRW |
| Security Exchange Name | NASDAQ |
