53-55 Sanchez St, San Francisco, CA 94114

The two-unit residential building at 53-55 Sanchez Street in Duboce Triangle, owned by Howard L. Yellen, is a two-story flats and duplex structure built in 1900.

The property underwent substantial renovations in 2013, including a significant $343,000 interior reconfiguration that involved remodeling kitchens and bathrooms, replacing front windows with energy-efficient wood sash windows, adding skylights, and updating stair railings to code. This was followed by concrete slab replacement work and complete plumbing system upgrades, including new fixtures and shower pans for both units. In 2014, further improvements included the installation of two gas fireplaces, new gas furnaces, and comprehensive electrical system upgrades with 200A service and two panels.

The building's infrastructure maintenance history is notable, with recent 311 calls indicating a previously collapsed sidewalk (now resolved) and various street cleaning matters, though none appear to have directly impacted building safety. The only recorded fire complaint from December 2011 regarding combustible materials was quickly resolved by January 2012. The property's recent maintenance history shows regular attention to both structural and systems upkeep, with the most significant investments occurring during the 2013-2014 renovation period.