525-527 21st Ave, San Francisco, CA 94121

The two-story multi-family residential building at 525-527 21st Avenue in San Francisco's Central Richmond neighborhood, owned by the Betty Wong Revocable Trust, was constructed in 1979 and consists of two units under the Flats & Duplex classification. The building's structural history includes significant work in 2004, when underpinning of the south side foundation was completed at a cost of $5,000 to address stability concerns related to adjacent excavation work.

A notable incident occurred in July 2005, when building demolition work generated two complaints regarding visual exposure of the first floor, though these complaints were promptly addressed within one day. More recently, the property has experienced recurring issues with tree root damage to the sidewalk area, with three open reports (in September 2023, January 2024, and most recently in April 2024) related to this maintenance concern, all of which were handled through the Department of Public Works Operations.

Additionally, there was one parking enforcement complaint in August 2019 regarding vehicles on the sidewalk, though responding officers were unable to locate the offending vehicle. The relatively minimal number of complaints and issues over the building's history, particularly focusing on infrastructure maintenance and tree-related concerns rather than structural or safety issues, suggests stable living conditions, though the ongoing tree root damage remains an unresolved environmental concern affecting the property.