Jose Castro House, now known as the Castro-Breen Adobe, in San Juan Bautista, California, USA, is a historic adobe home built by José Castro in 1840. Castro was Commandant General of Alta California. In 1848 Castro sold the house to Patrick Breen, survivor of the ill-fated Donner party of 1846, and the Breen family lived in the house until 1935. They sold it to the State of California who adapted it as a museum and incorporated it into the San Juan Bautista Plaza Historic District.