Cover Page - shares	3 Months Ended	6 Months Ended
	Jun. 30, 2024	Jun. 30, 2024	Aug. 01, 2024
Cover [Abstract]
Document Type		10-Q
Document Quarterly Report	true	true
Document Period End Date		Jun. 30, 2024
Current Fiscal Year End Date		--12-31
Document Transition Report	false	false
Entity File Number		001-38160
Entity Registrant Name		Redfin Corporation
Entity Incorporation, State or Country Code		DE
Entity Tax Identification Number		74-3064240
Entity Address, Address Line One		1099 Stewart Street
Entity Address, Address Line Two		Suite 600
Entity Address, City or Town		Seattle
Entity Address, State or Province		WA
Entity Address, Postal Zip Code		98101
City Area Code		(206)
Local Phone Number		576-8333
Title of 12(b) Security		Common Stock, $0.001 par value per share
Trading Symbol		RDFN
Security Exchange Name		NASDAQ
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 Common Stock, Shares Outstanding			121,774,260
Entity Central Index Key		0001382821
Document Fiscal Year Focus		2024
Document Fiscal Period Focus		Q2
Amendment Flag		false