Koshland House

Koshland House
Koshland House in 2008
Location3800 Washington St., San Francisco, California
Coordinates37°47′20″N 122°27′16″W / 37.78889°N 122.45444°W / 37.78889; -122.45444 (Koshland House)
Area0.5 acres (0.20 ha)
Built1902 (1902)
ArchitectFranklin S. Van Trees
Architectural styleClassical Revival
NRHP reference No.84001186
Added to NRHPJanuary 5, 1984

Koshland House, also known as "Le Petit Trianon", is a private residence in the Presidio Heights neighborhood of San Francisco, California. It has been one of San Francisco's most prominent and celebrated homes for over 100 years.

The property was established as San Francisco Landmark 95 by the City and County of San Francisco on July 9, 1977, and it was placed on the National Register of Historic Places listings on December 9, 1983. In 1976, it received high ratings in San Francisco's Department of City Planning's "Architectural Inventory", which rates only the top 10 percent of San Francisco's buildings.