Built in 1863, the old adobe Bancroft Ranch House stands as a one of only two local sites that has both National and…More State historical landmark status. The house was built by Judge Augustus S. Ensworth, who served as Justice of the Peace in San Diego in 1856. In 1865, he sold the house and the property to Rufus King Porter for $400. In 1885, Porter sold the property to Hubert H. Bancroft for $8,000. Bancroft was a famous writer and publisher of historical books, writing a total of 39 volumes about western North America. He lived at the ranch house, which bears his name, from 1885 until his death in 1918.
In March of 1963, the house became a museum and continues to be filled with artifacts, historical documents and photographs. The museum serves as the home for the Spring Valley Historical Society. Those interested in becoming members may contact Carol Serr at 619-469-1480. Membership levels include individual, family, corporate, student, and lifetime.