333-335 Masonic Ave, San Francisco, CA 94118

The two-unit residential building at 333-335 Masonic Ave in San Francisco's Lone Mountain neighborhood is a 2-story flats and duplex structure built in 1953, currently owned by the James Satoru Yamamoto Trust. The property has undergone several significant improvements over the past two decades, with the most substantial renovations occurring in 2010, including comprehensive updates to both units' kitchens and bathrooms, electrical systems, and plumbing fixtures at a documented cost of $16,000.

Earlier improvements include a 2008 kitchen upgrade ($8,500) and a substantial electrical system upgrade. The building has received regular maintenance attention, including window replacements (with multiple installations in 2006 and earlier) and infrastructure work such as roofing in 2001 and a shower repair in 2003. Recent activity records (2023-2025) show typical urban maintenance issues, including streetlight repairs, waste management concerns, and occasional illegal parking incidents.

There have been two recent complaints about waste receptacle management in 2023, though one was resolved with no evidence found during inspection. The property's historical maintenance record suggests regular upkeep and modernization efforts, particularly focusing on essential systems like plumbing, electrical, and weatherproofing. The most recent significant infrastructure work recorded was the 2010 renovation project, which addressed multiple systems across both units, indicating substantial investment in maintaining the property's habitability and comfort.