449-451 9th St, San Francisco, CA 94103

The 11-unit, 1914 three-story apartment building at 449-451 9th Street in San Francisco's SoMa neighborhood, currently owned by Mack Ventures LLC, has undergone several significant safety and structural improvements in recent years. Most notably, the building completed mandatory soft-story seismic retrofitting in 2020 at a cost of $155,000, achieving Tier 4 compliance. Recent fire safety upgrades are underway, as evidenced by a June 2023 permit for expanding the fire alarm system to add horns in units and a wireless radio communicator.

The building has experienced recurring fire safety issues, with multiple violations between 2017-2024 related to emergency lighting, sprinkler systems, and alarm maintenance, most of which have been abated. A notable cluster of violations was recorded in February 2018, including concerns about lead paint, electrical issues, and various health and safety matters, all of which were resolved by January 2019. The property has faced various maintenance and compliance challenges over the years, including a notable incident in 2018 involving an illegal shed in the rear yard that required restoration to original conditions.

There is currently an active complaint from August 2023 regarding a vacant storefront space that appears to be related to a commercial bakery use. The building's mechanical systems have required attention, with documented issues including sewer backup incidents in September 2024, though these were subsequently resolved. The property has a history of addressing fire safety violations, with all recorded violations related to illumination, exits, and fire protection systems being marked as abated. Recent permit activity suggests ongoing commitment to maintaining and upgrading building systems, including the most recent fire alarm system improvements.