2005-2011 Mason St, San Francisco, CA 94133

The property at 2005-2011 Mason Street is a 3-story, 4-unit multi-family residential building constructed in 1929, currently owned by the Lam/Fok-Tang Family Trust. The building has undergone several significant improvements in recent years, with the most notable being a comprehensive fire alarm system upgrade completed in November 2023 that included the installation of addressable smoke detectors, pull stations, and low-frequency horns in sleeping areas to comply with San Francisco Fire Code requirements.

Other recent improvements include window replacements in 2015 (with Milgard double-hung wood windows) and 2015-2016 (vinyl windows), reroofing in 2017, and electrical upgrades including a new sub-panel installation in 2012. The building has experienced some compliance issues in the past, most notably in 2006-2014 when multiple fire safety violations were recorded, including problems with the fire escape system, smoke detection system, and a period of vacancy for which notices were issued. These violations were ultimately abated between 2014 and 2016.

The property has maintained an active record of fire safety inspections and corrections over the years, with the most recent fire alarm system violation being issued in October 2023, which appears to have been promptly addressed. Recent 311 calls from 2024 primarily relate to external issues such as sidewalk blockages and garbage concerns, which are not directly related to building safety or habitability. The building's recent maintenance record suggests active management of major systems, particularly with regard to fire safety compliance.