770-772 Delta St, San Francisco, CA 94134

The two-unit residential building at 770-772 Delta Street in Visitacion Valley, owned by Guan Tom Jian Xing & Au Pui, was constructed in 1912 as a two-story flats and duplex structure. The property has a documented history of maintenance issues, with the most significant current concern being an active violation from 2020 regarding an unpermitted structure in the backyard, with monthly monitoring fees continuing to accrue, and a potential impending notice of violation (NOV) issuance in January 2025. In 2008, the building underwent several repairs to address violations including siding repairs, stair work, window fixes, and bathroom tile repairs, as well as issues with deteriorated sink cabinets and floor coverings.

The property has experienced multiple fire alarm incidents between 2009 and 2013, though all were determined to be system malfunctions or unintentional activations with no injuries reported. Recent activity from January 2025 shows several municipal service calls including reports of sidewalk defects, graffiti, and abandoned vehicles near the property. The building's maintenance record shows periodic attention to various issues, including a reroofing project from 1991 (permit expired) and multiple 311 calls in early 2025 regarding public works matters.

While some historical violations have been addressed, such as those from 2008 being resolved through the issuance of a completion permit in 2014, the property has experienced recurring maintenance needs over the years. A cluster of fire-related complaints was noted in 2013, though they were all resolved quickly. Recent 311 calls from January 2025 indicate ongoing infrastructure concerns, including a potentially collapsed sidewalk, though many of these calls have been marked as resolved. The building's current status as of October 2023 indicates several open violation cases and pending inspections, suggesting that some issues remain unaddressed or are in the process of resolution through the city's enforcement procedures.