4100-4102 19th St, San Francisco, CA 94114

The 4100-4102 19th Street property is a three-story, multi-family residential building with commercial space, constructed in 1885 and currently managed by the Jean W Seto Living Trust. The building contains 7 units and has undergone several significant renovations, most notably in 2010 when comprehensive updates were made to all four residential units, including electrical systems, plumbing, and the installation of a fire sprinkler system (though this permit eventually expired). In 2019-2024, the building has regularly hosted temporary T-Mobile equipment installations on the roof to provide additional network coverage during events like the Pride Parade, with the most recent installation planned for mid-2024.

The property has experienced some concerning issues in recent years, particularly regarding structural and safety matters. In July 2023, complaints were filed about sinking floors, electrical noise, and non-functional doors leading to the basement, though these problems were ultimately abated. Previous violations from 2004 included various safety concerns such as inadequate fire extinguishers and egress obstructions, which were resolved by September 2013.

A notable incident occurred in 2018 when a broken sprinkler head caused flooding and water damage to multiple floors. The building underwent significant modifications in 2013 when the street-level barber shop expanded into adjacent retail space, and there were plans to legally convert existing office space into dwelling units, though these plans faced challenges regarding parking and open space requirements. Recent maintenance history includes concrete slab replacement and stair tread repairs completed in 2024 to address a 2023 notice of violation. The property has also experienced recurring issues with garbage management, as evidenced by multiple 311 calls regarding garbage and debris between January 2025 and multiple complaints about vacant commercial storefronts in 2022 and 2023.