520-522 Fillmore St, San Francisco, CA 94117

The three-unit residential building at 520-522 Fillmore Street in Hayes Valley, owned by Alexander S. Mcmath, is a two-story flats and duplex structure built in 1900. The building's maintenance record shows several significant improvements over the years, including reroofing projects in 1991 and 1997, and bathroom renovations in 1993.

A horizontal addition was completed in 1987, demonstrating the property's historical development. The building underwent routine safety inspections in 2000, 2008, and 2010, with the 2008 inspection revealing multiple violations related to security and fire safety, including requirements for deadlatch locks, fire extinguishers, self-closing doors, and address identification - all of which were abated by February 2008. A structural issue with the wood stairs was identified and resolved in 2010.

More recent concerns include three fire code violations between 2019-2022 for issues related to permits, change of use, and non-conforming hardware, all of which were subsequently abated. The property has experienced multiple false alarms and system malfunctions, with six recorded fire incidents since 2010, though none resulted in civilian injuries. Recent activity at the property includes several 311 calls from 2023-2025 primarily related to sidewalk parking violations and street cleaning needs, with the most recent being for garbage and debris in January 2025. A notable fire complaint regarding overcrowding and operating without a permit was filed in May 2021, with violations issued and closed in February 2022.