James C. Flood Mansion

James C. Flood Mansion
James Clair Flood Mansion (Pacific-Union Club), 1000 California St, photographed from the 14th floor of the Mark Hopkins Hotel in July 2021
Location1000 California Street, San Francisco, California, USA
Coordinates37°47′31″N 122°24′41″W / 37.792011°N 122.411377°W / 37.792011; -122.411377
Built1886
ArchitectAugustus Laver; Willis Polk
Architectural styleNeoclassical
NRHP reference No.66000230
SFDL No.64
Significant dates
Added to NRHPNovember 13, 1966
Designated NHLNovember, 1966
Designated SFDL1974

The James C. Flood Mansion is a historic mansion at 1000 California Street, atop Nob Hill in San Francisco, California, USA. Now home of the Pacific-Union Club, it was built in 1886 as the townhouse for James C. Flood, a 19th-century silver baron. It was the first brownstone building west of the Mississippi River, and the only mansion on Nob Hill to structurally survive the 1906 San Francisco earthquake and fire. It was declared a National Historic Landmark in 1966.