Quarterly report pursuant to Section 13 or 15(d)

Cover page

Cover page - shares
3 Months Ended
Mar. 31, 2021
May 07, 2021
Entity Information [Line Items]    
Document Type 10-Q  
Document Quarterly Report true  
Document Period End Date Mar. 31, 2021  
Document Transition Report false  
Entity File Number 001-38545  
Entity Registrant Name Landsea Homes Corporation  
Entity Incorporation, State or Country Code DE  
Entity Tax Identification Number 82-2196021  
Entity Address, Address Line One 660 Newport Center Drive  
Entity Address, Address Line Two Suite 300  
Entity Address, City or Town Newport Beach  
Entity Address, State or Province CA  
Entity Address, Postal Zip Code 92660  
City Area Code 949  
Local Phone Number 345-8080  
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 Shell Company false  
Entity Common Stock, Shares Outstanding   46,281,091
Entity Central Index Key 0001721386  
Amendment Flag false  
Current Fiscal Year End Date --12-31  
Document Fiscal Year Focus 2021  
Document Fiscal Period Focus Q1  
Entity Ex Transition Period false  
Common Class A | NASDAQ    
Entity Information [Line Items]    
Title of 12(b) Security Common Stock, par value $0.0001 per share  
Trading Symbol LSEA  
Security Exchange Name NASDAQ  
Warrant | NASDAQ    
Entity Information [Line Items]    
Title of 12(b) Security Warrants exercisable for Common Stock  
Trading Symbol LSEAW  
Security Exchange Name NASDAQ