622 40th Ave, San Francisco, CA 94121

The two-story, four-unit multi-family residential building at 622 40th Ave in the Outer Richmond, owned by Yu Family Tr, has experienced several significant events and maintenance issues since its construction in 1959. Most notably, the building suffered a fire in March 2023 that caused structural damage to the south property line wall and roof, along with water damage in the stairwell; this incident triggered emergency response inspections and subsequent repairs that were completed in August 2024, including structural reinforcement and restoration of affected areas.

The building has undergone recent substantial electrical upgrades, with work completed in July 2023 to upgrade electrical sub-panels and main disconnects for all four units, as well as ground system repairs to meet PG&E requirements, indicating ongoing infrastructure improvements. Historical maintenance records show various repairs and upgrades over the years, including stucco repair in 2009, roof replacement in 2002, and vinyl siding installation in 1988.

The building's safety systems have been addressed through multiple violations and corrections, including requirements for smoke enclosure door closers, handrails, directional signs, and electrical safety improvements, all of which were ultimately resolved. Recent 311 calls regarding the property primarily relate to external issues such as parking enforcement, tree maintenance, and street cleaning, rather than building-specific problems. The property's documented history reflects a pattern of responsive maintenance and regulatory compliance, particularly in addressing the aftermath of the 2023 fire incident.