343 21st Ave, San Francisco, CA 94121

The two-story multi-family residential building at 343 21st Avenue in the Central Richmond neighborhood, constructed in 1961 and containing 6 units, has undergone several significant safety and maintenance upgrades in recent years. Most notably, in August 2024, the building's fire alarm system received a substantial $30,126 upgrade including new low-frequency horns in sleeping areas, a new fire alarm control panel, and updated visual/audible warning devices, demonstrating adherence to current safety standards.

The property successfully completed mandatory soft-story seismic strengthening work in 2015 (Tier 3), which included the installation of new shearwalls, moment frames, and grade beams to enhance structural stability. The building has experienced other notable maintenance work, including dry rot repairs completed in 2018 at a cost of $49,500, and earlier renovations in 1985 involving plumbing, electrical, and interior improvements.

Historical records show routine inspections by Housing Inspection Services in 1996, 2003, and 2009, with all violations and complaints promptly addressed and abated within a week of being filed. The building's location has experienced typical urban maintenance issues, as evidenced by multiple 311 calls between 2011 and 2021 regarding general cleaning and street maintenance, though these were primarily external to the building itself.