The subsequent Treaty of Guadalupe Hidalgo of 1848, ceding California, parts of Colorado, Nevada, New Mexico, and Arizona (but not Texas since it had seceded from Mexico in 1836, declared itself a republic, and joined the union in 1845) to the United States, formally ended the Mexican–American War.

The city of Los Angeles provided funds for the purchase of the property in 1923, and a Mission Revival and Spanish Colonial Revival style replica "adobe" ranch house was built by the city following an effort led by Irene T. Lindsay, then president of the San Fernando Valley Historical Society, and dedicated on November 2, 1950.

It is now a park and interpretive center managed by the City of Los Angeles's Department of Recreation and Parks in partnership with the Campo de Cahuenga Historical Memorial Association.

The foundations of the original adobe were unearthed beneath Lankershim Boulevard during construction of the Metro B Line subway.

151 at the site reads:[3] Source: "List of Butterfield Overland Mail Stations "Itinerary of the Route"" (PDF).