Cover - shares	9 Months Ended
	Sep. 30, 2025	Nov. 03, 2025
Document Entity Information
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Sep. 30, 2025
Document Transition Report	false
Entity File Number	001-40143
Entity Registrant Name	Better Home & Finance Holding Company
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	93-3029990
Entity Address, Address Line One	285 Fulton Street
Entity Address, Address Line Two	80th Floor
Entity Address, Address Line Three	Suite A
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	522-8837
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	true
Entity Ex Transition Period	false
Entity Shell Company	false
Entity Central Index Key	0001835856
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2025
Document Fiscal Period Focus	Q3
Common Class A
Document Entity Information
Title of 12(b) Security	Class A common stock, par value $0.0001 per share
Trading Symbol	BETR
Security Exchange Name	NASDAQ
Entity Common Stock, Shares Outstanding		9,855,284
Warrants
Document Entity Information
Title of 12(b) Security	Warrants exercisable for one share of Class A common stock at an exercise price of $575.00
Trading Symbol	BETRW
Security Exchange Name	NASDAQ
Common Class B
Document Entity Information
Entity Common Stock, Shares Outstanding		4,403,809
Common Class C
Document Entity Information
Entity Common Stock, Shares Outstanding		1,437,545