100 Van Ness is a skyscraper in San Francisco. Formerly an office building, it was converted into residential use. It is located in the Civic Center neighborhood near the San Francisco City Hall on Van Ness Avenue. The building, completed in 1974, stands 400 feet (122 m) and has 29 floors of former office space that housed the California State Automobile Association (CSAA). The conversion was completed by the San Francisco office of Solomon Cordwell and Buenz and the interior design was completed by New York-based Irish Interior Designer , founder and principal of .