Rancho de los Palos Verdes was a 31,629-acre (128.00 km2) Mexican land grant in present-day Los Angeles County, California given in 1846 by Governor Pío Pico to José Loreto and Juan Capistrano Sepulveda. The name means "range of green trees". The grant encompassed the present-day cities of the Palos Verdes Peninsula, as well as portions of San Pedro and Torrance.
The grant was originally a part of Manuel Dominguez's Rancho San Pedro Spanish land grant. Around 1810 Manuel Guttierez, executor of Dominguez’s will and de facto owner of his rancho, granted permission to then 17-year-old Jose Dolores Sepulveda to herd livestock in the southwestern reaches of the Rancho San Pedro. This eventually became the basis for the Sepulveda family’s contested claim to the Rancho de los Palos Verdes. Dolores had trouble getting his land title cleared, so he took a trip to Monterey to get the matter definitely settled and, on his return trip, he was killed in the Chumash revolt at Mission La Purísima Concepción in 1824. In 1834, a judicial decree was made by Governor Jose Figueroa which was intended to settle the dispute between the Dominquez and Sepulveda families.
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 de los Palos Verdes was filed with the Public Land Commission in 1852, and the grant was patented to José Loreto and Juan Capistrano Sepulveda in 1880.
By 1882 ownership of the land had passed from the Sepulveda through various mortgage holders to Jotham Bixby of Rancho Los Cerritos, who leased the land to Japanese farmers. After the turn of the century most of Bixby's land was sold to a consortium of New York investors spearheaded by Frank A. Vanderlip that created The Palos Verdes Project and began marketing land on the peninsula for small horse ranches and residential communities.