1937-1941 Mason St, San Francisco, CA 94133

The three-unit, three-story multi-family residential building at 1937-1941 Mason Street in Russian Hill, owned by Jonathan M & Christi Kantor, was constructed in 1907 and has undergone several significant improvements over the years. Most recently, in June 2024, the building received a substantial fire safety upgrade with the installation of a new fire alarm system at a cost of $27,726 to comply with current fire code requirements.

The property has seen significant renovations in recent years, including a comprehensive interior remodeling project in 2014-2015 (valued at $180,000) that involved converting existing bedrooms to master bedrooms, transforming living rooms into bedrooms, adding new bathrooms, and making modifications in the basement. The electrical system has been notably upgraded, with a 200-amp service installation in 2010 and a complete electrical modernization project in 2015 that included the installation of numerous new outlets. Historical records indicate the building underwent routine safety inspections in 1999, 2003, 2006, and 2015, with the 2006 inspection revealing several fire safety concerns that were subsequently addressed, including fire extinguisher recharging and central alarm system certification.

The property has experienced some maintenance issues in recent years, with multiple reports of water main leaks in 2024, though these appear to have been resolved. Community maintenance issues have been periodically documented through 311 calls, primarily relating to street cleaning and sidewalk maintenance, with the most recent concerns being a lifted sidewalk reported in 2022 that remains open. The building's recent history shows active maintenance and upgrading of critical systems, particularly in the area of fire safety, though there have been occasional maintenance issues requiring attention.