Tech billionaire's Former Bay Area Estate Hits the Market for $35M

Just 27 miles east of San Francisco, the town of Alamo is home to many grand estates set upon rolling hills overlooking views of Diablo Valley. It is in this bucolic, wealthy enclave that tech billionaire David Duffield established Fieldhaven, a 21-acre estate that took years and over $135 million to build. Adjusting for inflation, the property would cost about $250 million to construct today, or you can buy it now for $35 million.