Description of Business	12 Months Ended
Dec. 31, 2025
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Description of Business	Note 1. Description of Business Millrose Properties, Inc. (“Millrose” and, together with its subsidiaries, the “Company”) is a corporation incorporated under the laws of the State of Maryland on March 19, 2024 and later spun-off (the “Spin-Off”) by Lennar Corporation (“Lennar”, or the “Predecessor”) to create an independent, publicly traded company. The Spin-Off was completed on February 7, 2025 at which time Millrose’s Class A common stock was listed on the New York Stock Exchange under the symbol “MRP”. Prior to the Spin-Off, the operations and financial information that represent the business assets that were spun off to Millrose were wholly owned by and under the common control of Lennar and are collectively referred to as the “Predecessor Millrose Business”. After the Spin-Off, Millrose is an independent company that is externally managed and advised by Kennedy Lewis Land and Residential Advisors LLC (“KL” or the “Manager”), pursuant to a management agreement between Millrose and KL entered into on February 7, 2025 (the “Management Agreement”). The Company purchases and develops residential land and sells finished homesites to homebuilders by way of option contracts with predetermined costs and takedown schedules. The Company serves as a solution for homebuilders seeking to expand access to finished homesites while implementing an asset-light strategy. The Company’s option contracts provide for the payment of recurring cash option fees in exchange for granting counterparties the right to purchase land that Millrose owns during the development period at predetermined prices and takedown schedules. As Millrose sells fully developed homesites, capital is recycled into future land acquisitions for homebuilders, providing counterparties with durable access to community growth. To a lesser extent, the Company also provides development loans secured by property intended for residential use. Millrose has one operating and reportable segment that derives revenue primarily from its portfolio of homesites under option contracts. To a lesser extent, the Company earns interest income on the outstanding loan balance of development loans secured by residential property. The Company’s operations are conducted in the United States. As of December 31, 2025, Millrose had 933 homesites in 142,139 properties (also known as communities) across 30 states. The Company intends to elect to be treated as a REIT for U.S. federal income tax purposes beginning with its taxable year ended December 31, 2025. Millrose Properties, Inc. is a holding company whose operations are conducted primarily through MPH Parent LLC (“MPH Parent”), a Delaware limited liability company and a wholly owned operating subsidiary of Millrose, and other subsidiaries, including Millrose Properties Holdings, LLC (“Millrose Holdings”), a Delaware limited liability company and a wholly owned operating subsidiary of MPH Parent. Millrose and MPH Parent made a joint election to treat MPH Parent as a TRS of Millrose. Accordingly, MPH Parent will be subject to full entity-level taxation in connection with its business operations. Similarly, the Company expects that its other TRSs will be taxable business entities.

Description of Business

12 Months Ended

Dec. 31, 2025

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Note 1. Description of Business

Millrose Properties, Inc. (“Millrose” and, together with its subsidiaries, the “Company”) is a corporation incorporated under the laws of the State of Maryland on March 19, 2024 and later spun-off (the “Spin-Off”) by Lennar Corporation (“Lennar”, or the “Predecessor”) to create an independent, publicly traded company. The Spin-Off was completed on February 7, 2025 at which time Millrose’s Class A common stock was listed on the New York Stock Exchange under the symbol “MRP”.

Prior to the Spin-Off, the operations and financial information that represent the business assets that were spun off to Millrose were wholly owned by and under the common control of Lennar and are collectively referred to as the “Predecessor Millrose Business”. After the Spin-Off, Millrose is an independent company that is externally managed and advised by Kennedy Lewis Land and Residential Advisors LLC (“KL” or the “Manager”), pursuant to a management agreement between Millrose and KL entered into on February 7, 2025 (the “Management Agreement”).

The Company purchases and develops residential land and sells finished homesites to homebuilders by way of option contracts with predetermined costs and takedown schedules. The Company serves as a solution for homebuilders seeking to expand access to finished homesites while implementing an asset-light strategy. The Company’s option contracts provide for the payment of recurring cash option fees in exchange for granting counterparties the right to purchase land that Millrose owns during the development period at predetermined prices and takedown schedules. As Millrose sells fully developed homesites, capital is recycled into future land acquisitions for homebuilders, providing counterparties with durable access to community growth. To a lesser extent, the Company also provides development loans secured by property intended for residential use.

Millrose has one operating and reportable segment that derives revenue primarily from its portfolio of homesites under option contracts. To a lesser extent, the Company earns interest income on the outstanding loan balance of development loans secured by residential property. The Company’s operations are conducted in the United States. As of December 31, 2025, Millrose had 933 homesites in 142,139 properties (also known as communities) across 30 states.

The Company intends to elect to be treated as a REIT for U.S. federal income tax purposes beginning with its taxable year ended December 31, 2025. Millrose Properties, Inc. is a holding company whose operations are conducted primarily through MPH Parent LLC (“MPH Parent”), a Delaware limited liability company and a wholly owned operating subsidiary of Millrose, and other subsidiaries, including Millrose Properties Holdings, LLC (“Millrose Holdings”), a Delaware limited liability company and a wholly owned operating subsidiary of MPH Parent. Millrose and MPH Parent made a joint election to treat MPH Parent as a TRS of Millrose. Accordingly, MPH Parent will be subject to full entity-level taxation in connection with its business operations. Similarly, the Company expects that its other TRSs will be taxable business entities.