467 20th Ave, San Francisco, CA 94121

The 4-unit, 2-story multi-family residential building at 467 20th Ave in San Francisco's Central Richmond district was constructed in 1975 and is currently owned by Chan Yuet Ngor Residuary. The property has undergone several maintenance and safety improvements over the years, most notably including a house trap replacement in 2017, though this work was categorized under plumbing rather than general building maintenance.

The building experienced a significant cluster of fire safety violations in October 2002, when multiple citations were issued regarding fire extinguisher maintenance, combustible storage, fire sprinklers, and the installation of smoke detectors in critical areas such as the lobby and stairs. Additionally, violations were noted regarding gas utility shutoff tools. These issues were promptly addressed and formally abated by December 2002, demonstrating responsive remediation to safety concerns.

More recent history shows only routine inspections in 2010 and a couple of parking-related incidents in 2019, including one case that resulted in a citation for sidewalk parking. There was also a graffiti incident reported in January 2019 that was resolved, though the building's specific involvement in these neighborhood issues is unclear. The only documented building-specific maintenance work was a reroofing project initiated in 1995, though records show this permit has long since expired.