1511-1513 12th Ave, San Francisco, CA 94122

The two-unit, two-story multi-family residential building at 1511-1513 12th Avenue in the Inner Sunset, owned by Huang Ci & Li Hui Yan, was constructed in 1968. The building's documented history reveals several significant structural modifications and safety considerations, particularly regarding fire safety.

In late 1989, a major fire safety project was undertaken to add a new fire escape from the third floor and integrate it with the existing ground and second floors, though this was subsequently modified in mid-1991 when the description of the fire escape work was deleted from the records. The building has undergone basic maintenance work, including a re-roofing project initiated in June 1989.

More recently, in March 2012, there was a housing complaint regarding a possible illegal unit in the basement, though this complaint is currently listed as not active with no recorded resolution date. The building's documented history suggests attention to fire safety issues in the late 1980s, while more recent records show limited major modifications or repairs, with only the single complaint about basement unit legality in the past decade.