101 Pierce St, San Francisco, CA 94117

The three-story, six-unit multi-family residential building at 101 Pierce Street in Hayes Valley, owned by 12 One LLC, has undergone several significant improvements and faced various challenges since its construction in 1905. Most notably, the building completed mandatory soft-story retrofitting in 2021 (pursuant to Tier 4 requirements), which included substantial structural improvements such as replacing a brick foundation with concrete and installing new shear walls at a cost of $100,000. The building has also seen recent unit improvements, including a kitchen renovation in Unit 612 in 2021 and gas line installation for a stove in 2022.

In recent years, the property has experienced several maintenance and compliance issues that have impacted resident comfort and safety. In late 2021, multiple housing code violations were documented, including problems with heating systems, window functionality, and door operation, though these were officially abated by November 2022. There was also a notable incident in August 2022 involving graffiti and boarded-up windows on the property.

Earlier historical issues included concerns about an unauthorized commercial use of the ground floor in 2004-2005, which was eventually resolved through various planning and enforcement actions. The building's maintenance history shows attention to both structural integrity and resident amenities, with various repairs addressed through building permits, including the replacement of rotted exterior steps in 2019 and multiple fire safety improvements. The property has a history of fire safety system activations and other minor incidents, including gas leak and water problems, though none resulted in civilian injuries. Recent 311 calls from late 2024 through early 2025 have primarily concerned exterior maintenance issues such as graffiti and sidewalk cleaning needs, which appear to be routine urban maintenance matters rather than indicating any significant building-specific problems.