1246 21st Ave, San Francisco, CA 94122

The three-unit, three-story multi-family residential building at 1246 21st Avenue in the Central Sunset neighborhood, owned by Tong Yin Kai & Di-fun Tsang, was constructed in 1990 following two completed construction projects in 1987 and 1988 that involved both horizontal and vertical extensions of the property.

The building's permit history shows a sidewalk permit was issued in October 2007 for a nominal cost of $1.00.

The property has experienced recurring parking-related issues in recent years, with four documented incidents between 2018 and 2024 involving vehicles blocking driveways or parking on sidewalks, though in each case, responding officers were either unable to locate the offending vehicles or could not validate the reported issues. Additionally, there was one notable incident in February 2021 involving sewer odor complaints that were initially reported to the San Francisco Fire Department Bureau of Fire Prevention, which were later referred to another agency, and a fire-related complaint in June 2021 that was similarly referred to another agency.