3750 Mission St, San Francisco, CA 94110

The three-unit multi-family residential building at 3750 Mission St in Bernal Heights, owned by the Martinez Alice Family Trust, has undergone significant maintenance and upgrades since its construction in 1911. The most recent major work includes comprehensive plumbing updates completed in 2024, including re-piping of 150 feet of copper pipe throughout the building and gas line replacements, following earlier improvements such as the installation of furnaces and bathroom renovations in 2022-2023.

The building experienced water damage in 2021, requiring substantial repairs to drywall, flooring, and electrical systems in multiple units, along with plumbing modifications including bathroom work and water heater installations. Historical records show earlier infrastructure work including rear stair replacement in 1997 and reroofing in 2002. The property underwent a routine housing inspection in 2011 that identified several security and safety issues, including concerns about the roof access door and self-closing devices, though these violations were subsequently abated by December 2011.

More recent building systems improvements have focused on modernizing the plumbing and electrical infrastructure, with work completed on units 88, 90, and 86. The building has experienced some external issues in 2024, with multiple reports of sidewalk defects noted in 2024 (currently under consideration as a tree root damage issue), though these are municipal infrastructure matters not directly related to the building's condition. A CO detector activation incident was recorded but attributed to a malfunction with no injuries reported.