600 41st Ave, San Francisco, CA 94121

The 9-unit, 3-story multi-family residential building at 600 41st Avenue in the Outer Richmond, owned by Ng Choo Koon & Huang Miao L, has undergone several significant renovations and faced multiple maintenance challenges since its construction in 1927. Most notably, the property added two accessory dwelling units (ADUs) in 2018 through a $185,000 conversion of garage space, followed by comprehensive safety upgrades, including a new sprinkler system (2021) and fire alarm system upgrade (2021). Recent improvements have focused on HVAC modernization, with a transition from gas furnace to heat pump systems, and ongoing electrical system upgrades, including a 400-amp panel upgrade initiated in 2024.

The building has experienced recurrent maintenance issues, particularly regarding heating systems, with multiple complaints about inadequate heat between 2009 and 2018, culminating in violations for failing to provide proper heating and electricity in late 2018. A fire incident in 2018 required substantial repairs to Unit #6, including electrical rewiring and plumbing fixture replacement. The property remains non-compliant with soft-story seismic requirements (Tier 3).

Recent building maintenance records indicate ongoing challenges, including a 2019 complaint about plumbing issues (toilets not flushing properly) and the discovery of rodent infestation. The most recent fire safety violation was issued in February 2024 regarding fire extinguishers, though historical records show consistent attention to such safety equipment, with past violations typically corrected promptly between 2011 and 2024. Recent 311 calls (2024) primarily relate to external maintenance issues such as garbage management and sidewalk cleaning.