1326-1328 27th Ave, San Francisco, CA 94122

The three-story duplex at 1326-1328 27th Avenue in San Francisco's Central Sunset neighborhood is a multi-family residential building dating back to 1924, currently owned by Hsu Sun Chi-shuan. The most significant structural improvement was completed in 2001 with the addition of a penthouse floor, representing a substantial vertical expansion of the building.

Between 2001 and 2004, the property underwent various important upgrades, including the installation of a fire sprinkler system (2002), major electrical service upgrades to 200-amp service with rewiring of the entire building (completed in 2004), and the attempted but ultimately cancelled project to relocate stairs and add bathrooms on multiple floors. The building's safety and infrastructure were significantly improved during this period, particularly with the installation of fire safety systems and electrical upgrades.

Recent records from 2023-2024 primarily show maintenance and street issues rather than building safety concerns, including several reports of garbage and debris on the street, some of which were liquid spills, and two reports of abandoned vehicles that were determined not to be violations. The property is appropriately classified in an RH-2 (Residential, House, Two-Family) District, with planning records showing a proposed rear deck/stair extension project that was ultimately completed, adding outdoor access and usable space to the building. The extensive improvements and upgrades from 2001 to 2004 demonstrate significant investment in the building's infrastructure and safety systems, while the recent complaints primarily relate to street-level issues rather than building-specific concerns.