1223 20th Ave, San Francisco, CA 94122

The three-unit residential building at 1223 20th Avenue in the Central Sunset neighborhood, owned by Raina Oy Ling Choy Tr, was constructed in 1994 following the demolition of previous structures in January 1993. The three-story flats and duplex building was built with a complete wet-type fire sprinkler system, which was installed as part of the original construction.

The building has undergone several significant maintenance activities, including a reroofing project in 2016 costing $6,800, and more recently, a street space permit issued in 2019. A notable housing complaint from December 2010 reported ceiling leaks caused by clogged roof drains, window damage, and heating system issues, though these were abated within a week. The building's recent history from 2023-2024 has seen multiple incidents primarily related to parking enforcement, with several cases of driveway blocking and sidewalk parking reported and resolved through official intervention.

There have also been various urban maintenance issues in the vicinity, including reports of garbage and debris (August 2024), human or animal waste (May 2024), and mold and mildew (August 2024). While there was a fire incident logged as a false alarm in the past and an elevator complaint in 2009 that was found to have no merit, there have been no significant fire safety incidents recorded in recent years. The building's maintenance history shows regular upkeep, including the 2016 roof work, though the 2010 plumbing and heating issues suggest some past infrastructure concerns.