646 Ofarrell St, San Francisco, CA 94109

646 Ofarrell St is a three-story, 11-unit multi-family residential building constructed in 1915, currently owned by Decker Holding LLC. The building, which is classified as an unreinforced masonry structure, has undergone several significant safety improvements over the years, including a seismic hazard initialization project in 2001 costing $82,000 and reroofing in 2001.

The building has experienced multiple concerning incidents, including a small kitchen fire in 2003 that required electrical repairs, and serious maintenance issues in 2002 following fire damage that left debris and hazardous conditions. Notable safety violations were documented in September 2001, including problems with heat provision, smoke detectors, floor coverings, and potential lead paint hazards, though these were later abated by December 2001.

More recent concerns include active complaints regarding indoor battery charger safety in 2016, and several maintenance and safety violations were recorded between 2000-2003. The building has had recurring fire safety issues, as evidenced by multiple fire complaints between 2008-2023 regarding alarms, extinguishers, and fire escapes, though most have been marked as "Condition Corrected." Recent activity around the property has generated multiple 311 calls for various issues including excessive noise, garbage and debris, and encampments near the building, with several cases remaining open or having been resolved between 2024 and 2025. The building's maintenance history shows a pattern of both ongoing upkeep and periodic safety violations that have required attention, particularly relating to fire safety systems and building infrastructure.