2100 Bay St, San Francisco, CA 94123

The 15-unit, 3-story apartment building at 2100 Bay Street in the Marina neighborhood, owned by 2100 Bay Street LLC, has a complex history dating back to its 1927 construction. Most recently, in 2024-2025, the building has experienced fire safety issues, with violations documented in late 2023 and late 2024 regarding alarm systems and sleeping area requirements, respectively. A significant permit was filed in January 2025 for upgrading the fire alarm system to meet current California/San Francisco requirements, including installing low-frequency horns and wireless monitoring.

The building has undergone various maintenance and safety-related modifications over the years, including a steam boiler replacement in 2017, reroofing work in 2003, and fire safety improvements in 2002-2003 following multiple violations related to unauthorized storage room conversions, inadequate fire separation, and improper fire sprinkler installations. The property has a record of routine housing inspections from 1999 through 2014, during which various maintenance issues were identified and subsequently addressed. Historical concerns include heating system problems in the late 1990s and early 2000s, unauthorized modifications to storage rooms, and fire safety compliance issues.

Recent 311 calls (2021-2024) primarily relate to sidewalk maintenance, waste removal, and street cleaning, while the building has experienced only one documented cooking-related fire incident with no injuries. The property currently has one open fire violation from November 2024 regarding sleeping area requirements, though a recent alarm system violation from September 2023 has been abated. The building's management has generally responded to violations and completed necessary repairs, as evidenced by the completion status of most historical permits and violations.