320 11th Ave, San Francisco, CA 94118

The 3-story, 12-unit apartment building at 320 11th Avenue in the Inner Richmond, owned by Yinming Investment Co, has undergone several important safety upgrades and faced recurring maintenance challenges since its 1961 construction. Most recently, in August 2024, the building completed a significant fire alarm system upgrade costing $39,200 to meet current San Francisco Fire Code requirements, including installation of low-frequency sounders in sleeping areas and new compatible devices. The building achieved compliance with San Francisco's Soft Story Seismic Retrofit program in 2016, demonstrating attention to structural safety.

Historical records show consistent building maintenance issues, particularly relating to water intrusion and mold. Between 2002-2013, multiple complaints were filed regarding water damage, including significant flooding incidents in 2011 and 2013, along with recurring reports of mold and ventilation issues. A cluster of violations was recorded in 2002 related to fire safety and building maintenance, including fire proofing, fire escape maintenance, laundry room ventilation, and various general safety requirements, though these were all abated by July 2002.

The building has experienced periodic fire alarm system issues, with documented complaints in 2023, 2020, and 2019, though these were generally resolved promptly, with one violation in 2020 related to alarm system maintenance being officially abated. Recent 311 calls from 2022-2024 primarily relate to street cleaning and waste removal, indicating typical urban maintenance concerns in the vicinity of the building. The property has undergone various maintenance work over the years, including reroofing projects in 1988 and 2006, seismic upgrades, and fire safety improvements. While most recent building permits indicate proper attention to building codes and safety requirements, the historical patterns of water-related issues and fire safety system maintenance suggest ongoing monitoring of building systems and infrastructure remains important.