1943-1947 Mason St, San Francisco, CA 94133

The three-unit, three-story multi-family residential building at 1943-1947 Mason Street in Russian Hill, owned by Mung Family Trust, has undergone several significant improvements since its construction in 1907. The most substantial renovations occurred in 2005, with attempted projects including converting the basement to a parking garage and replacing the brick foundation with concrete footings, though these permits ultimately expired. In 2007, Unit #1 received substantial updates including a kitchen remodel with high-efficacy lighting and associated plumbing and electrical work, which were successfully completed.

The building underwent routine safety inspections in 1999, 2003, 2006, and 2015, with no outstanding violations noted. A possible concern arose in 2009 with a fire alarm system issue that was promptly corrected within two weeks. In recent months (2024), there have been multiple reports of garbage and debris on the premises, with eight separate incidents recorded between June and December, all of which were resolved.

There were also three utility-related incidents reported in September 2024, including a water leak, a sewage discharge, and a sewer-related issue, though these were either accepted or resolved with no significant findings. The most recent building-related activity was a street space permit issued in 2016, while the last known building permit activity was in 2007. The property's record shows regular maintenance and inspections over the years, with no major building code violations or safety concerns noted in the most recent years.