| Cover | Apr. 01, 2024 |
| Document Type | 8-K/A |
| Amendment Flag | true |
| Amendment Description | Explanatory Note Landsea Homes Corporation (the Company) filed a Current Report on Form 8-K with the Securities and Exchange Commission (the SEC) on April 2, 2024 (the Original Report) to report under Item 2.01 thereof the completion, on April 1, 2024, of the Companys acquisition (the Acquisition) of all of the outstanding membership interests of Antares Acquisition, LLC (Antares). As reported in the Original Report, (i) the audited financial statements of Antares as of and for the years ended December 31, 2023 and 2022 and the associated independent auditor reports and (ii) the unaudited pro forma condensed combined financial information of the Company as of and for the year ended December 31, 2023 giving effect to the Acquisition and related transactions, representing the information required to be filed by the Company under Item 9.01(a) and Item 9.01(b) to Form 8-K with respect to the Acquisition, were previously reported in the Companys Current Report on Form 8-K filed with the SEC on March 18, 2024. Pursuant to General Instruction B.3 of Form 8-K, such information was not additionally reported in the Original Report, and instead was incorporated by reference therein. The Company is filing this Current Report on Form 8-K/A in order to supplementally file (i) the unaudited financial statements of Antares as of and for the three months ended March 31, 2024 and 2023 and (ii) the unaudited pro forma condensed combined financial information of the Company as of and for the six months ended June 30, 2024 and for the year ended December 31, 2023 to give effect to the Acquisition and related transactions. |
| Document Period End Date | Apr. 01, 2024 |
| Entity File Number | 001-38545 |
| Entity Registrant Name | LANDSEA HOMES CORPORATION |
| Entity Central Index Key | 0001721386 |
| Entity Tax Identification Number | 82-2196021 |
| Entity Incorporation, State or Country Code | DE |
| Entity Address, Address Line One | 1717 McKinney Avenue |
| Entity Address, Address Line Two | Suite 1000 |
| Entity Address, City or Town | Dallas |
| Entity Address, State or Province | TX |
| Entity Address, Postal Zip Code | 75202 |
| City Area Code | (949) |
| Local Phone Number | 345-8080 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | false |
| Common Stock, par value $0.0001 per share | |
| Title of 12(b) Security | Common Stock, par value $0.0001 per share |
| Trading Symbol | LSEA |
| Security Exchange Name | NASDAQ |
| Warrants exercisable for Common Stock | |
| Title of 12(b) Security | Warrants exercisable for Common Stock |
| Trading Symbol | LSEAW |
| Security Exchange Name | NASDAQ |
