Hubert H. Bancroft Ranch House
is a historic structure in Spring Valley, California
It is the first Anglo-American structure in Spring Valley and was built by Augustus Ensworth out of timbers salvaged from a shipwreck in San Diego Bay. Upon Enworth's death, the property was sold to Rufus King Porter, son of the founder of Scientific American
. Porter later sold the property to historian Hubert Howe Bancroft
. Bancroft built a more comfortable home up the hill from the adobe ranch house and a rock school house for his children, now located across the street.
It was declared a National Historic Landmark