Rancho Buri Buri (also called Sánchez Rancho) was a 14,639-acre (59.24 km2) Mexican land grant in present-day San Mateo County, California, given in 1835 by Governor José Castro to José Antonio Sánchez. The name derives from the Urebure village of the Ramaytush speaking Yelamu tribe of Ohlone people who were settled by the banks of San Bruno Creek. Rancho Buri Buri extended between the north line of South San Francisco and the middle of Burlingame, and from the San Francisco Bay to the top of the Peninsula ridge and included present-day Lomita Park, Millbrae, South San Francisco, San Bruno, and the northern part of Burlingame.
Rancho Buri Buri, which was first established as grazing land for Mission Dolores and the Presidio of San Francisco. In 1827, Sub lieutenant José Antonio Sánchez, who was stationed at the Presidio, was granted permission by Mexican governor José María de Echeandía to occupy the rancho for “grazing and agricultural purposes”. The land grant was confirmed in 1835, by Governor Castro. Sánchez worked the land from the time it was granted to him until his death in 1843. Upon his death, the rancho lands were divided between his 10 children.
With the cession of California to the United States following the Mexican-American War, the 1848 Treaty of Guadalupe Hidalgo provided that the land grants would be honored. As required by the Land Act of 1851, a claim for Rancho Buri Buri was filed with the Public Land Commission in 1852, and the grant was patented to José de la Cruz Sánchez and siblings in 1872.