Sonoma County Landmarks
Magnolia Farm is the oldest home in the East Side of Sonoma. At one time it was owned by General Mariano Vallejo. Over time it fell victim to several unfortunate additions, suffered from deferred maintenance and finally was abandoned all together.
The residence was rebuilt and expanded.
The original structure was lifted to facilitate construction of a foundation system and to upgrade utilities. The porches and balconies were carefully measured and photographed prior to being removed and reconstructed. All siding and interior finishes were removed board by board. The floor plan was modified only slightly; however, the kitchen and main living areas were relocated to the addition.
Source: Verdigris, a nimble team of architects based in Sausalito

The C.F. Leiding House next door is also a county landmark.