Quarterly report pursuant to Section 13 or 15(d)

Cover Page

Cover Page - shares
3 Months Ended 6 Months Ended
Jun. 30, 2022
Jun. 30, 2022
Jul. 28, 2022
Cover [Abstract]      
Document Type   10-Q  
Document Quarterly Report true true  
Document Period End Date   Jun. 30, 2022  
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     108,454,765
Entity Central Index Key   0001382821  
Current Fiscal Year End Date   --12-31  
Document Fiscal Year Focus   2022  
Document Fiscal Period Focus   Q2  
Amendment Flag   false