2120 Chestnut St, San Francisco, CA 94123

The three-story, seven-unit multi-family residential building at 2120 Chestnut Street in the Marina District, owned by Bosco Family Investors Lp, was constructed in 1928 and has undergone several significant safety upgrades in recent years. The property completed mandatory seismic retrofit work in March 2020, with records showing separate permits for both commercial and residential sections of the building, costing a total of $41,334. In 2023, the building received substantial fire safety upgrades, including the installation of a new fire alarm system with low-frequency sounders in sleeping areas to meet current fire code requirements, at a cost of over $33,500.

The building has a history of fire alarm system-related incidents, with multiple false alarms and system malfunctions recorded between 2011 and 2024, including a recent fire complaint in April 2024 that was found to have no merit. The building's maintenance history shows regular upkeep, including a 400-amp electrical service upgrade in 2021, reroofing work in 2011, and recent exterior improvements such as awning replacement in 2015. A notable violation was recorded in March 2023 regarding failure to complete all associated work under the Mandatory Soft Story Program, though this appears to have been resolved by July 2024 with the issuance of the Certificate of Final Completion (CFC). The property has experienced periodic maintenance issues typical of its age, including historical violations in 2003 related to fire escape drop ladders and directional signs, though these were promptly addressed.

Recent 311 calls in the area have mostly concerned sidewalk access and street cleaning issues, typical of urban neighborhoods, with the most recent being resolved complaints about scooters blocking sidewalks in January 2025. The building is listed as a "Tier 4" soft story structure, indicating that it has completed the required retrofit work and received the appropriate certification. While there is a pattern of fire alarm system activations and occasional maintenance issues, these appear to be generally addressed promptly through regular building permits and inspections. The property's location and age are consistent with typical urban residential buildings in San Francisco, and all significant building code requirements appear to have been met, based on the available records.