140 Duboce Ave, San Francisco, CA 94103

140 Duboce Avenue is a 15-unit multi-family residential building constructed in 1928, located in the Mission Dolores neighborhood. The property underwent significant modifications between 2018 and 2023, including the conversion of a 2-car garage into 4 ADUs completed in 2020. This was followed by various unit renovations, including comprehensive upgrades to Units 101, 102, and 204 between 2021-2022, involving kitchen relocations, bathroom rehabilitations, and washer/dryer installations.

The building has a completed soft-story retrofit (Tier 4) from 2018, demonstrating seismic safety compliance. Recent and concerning issues include a March 2024 complaint about water intrusion and widespread mold problems affecting two bedrooms and living room areas in Unit 205, which reportedly worsened despite property management's response. The building's fire safety systems have received recent attention, with multiple permits in 2023-2024 related to fire sprinkler installations, monitoring systems, and fire alarm upgrades to comply with current safety codes.

Historical building violations from 2003 (now abated) cited issues with fire escape ladders, exterior door self-closing devices, and gas meter instructions, while a 2023 complaint noted multiple fire safety concerns in common areas requiring attention. The property has maintained an active response to modernization and safety upgrades, including the installation of mini-split heat pump systems (2022), additional fire safety devices (2023), and various plumbing and electrical improvements. Recent 311 calls (2024) primarily relate to external issues such as sidewalk maintenance and graffiti, while building management's responses to these public space concerns have generally been prompt, as demonstrated by the resolution of multiple sidewalk defect reports and other public space maintenance issues.