900 Bay St, San Francisco, CA 94109

The 12-unit multi-family residential building at 900 Bay Street in Russian Hill, managed by the Piedemonte Family Trust, has undergone significant improvements and modifications since its construction in 1925. The property has received notable attention to safety and modernization, including the installation of a comprehensive fire sprinkler system in 2022 ($25,000), a major fire alarm system upgrade in 2021 ($20,000) to include low-frequency horns in sleeping areas, and voluntary seismic improvements with a soft-story retrofit in 2014 ($220,000). Recent developments include the successful conversion of three garage spaces into two ADUs in 2019, comprising a 2-bedroom unit at the second level and a studio at the first level, along with associated electrical and plumbing work.

The building has maintained an active maintenance and improvement schedule, with window replacements in 2010 (115 aluminum clad windows), foundation repairs in 2011, and various unit-specific renovations such as a kitchen remodel in Unit 9 (2015). The property has experienced a few challenges, primarily from a series of building complaints in 2011 regarding unpermitted work, though these issues were resolved. A fire complaint regarding blocked exits was quickly corrected in 2020.

The building has a history of false fire alarms and system activations, but no significant fire-related injuries have been reported. Recent 311 calls in 2024 have primarily concerned exterior issues like sidewalk defects, graffiti, and street conditions, which are typical for urban settings and not directly related to building safety or maintenance. The most recent permits indicate ongoing infrastructure work, including a new fire sprinkler system installation and domestic water service relocation in early 2024, demonstrating the owner's commitment to maintaining and upgrading the property's systems and safety features.