639 Guerrero St, San Francisco, CA 94110

This two-story, four-unit multi-family residential building at 639 Guerrero St, built in 1960 and managed by William & Michelle Quan Tr, has experienced periodic maintenance and several significant events over its history. The building's maintenance history reveals ongoing attention to structural elements, particularly regarding staircase safety, with repairs completed in 2011 and 2003 addressing damaged stairways and landings, though these persistent issues may raise safety concerns. Unit #3 underwent a substantial renovation in 2011, including bathroom and kitchen remodeling, window replacements, and associated plumbing and electrical work totaling approximately $25,000.

The property has faced multiple building violations, with notable clusters of issues in 2003 and 2011, primarily concerning fire safety and stair repairs. In 2003, violations included problems with fire proofing, stairs, and smoke detectors, while 2011 violations encompassed stair repairs, combustible storage, and various mechanical issues, though all were subsequently resolved. Historical documentation from 1997 shows earlier concerns about wall cracks, paint chipping, and bathroom maintenance.

Most recently, there have been multiple 311 calls in 2024 regarding noise disturbances and tree root damage to the sidewalk, with open cases for excessive noise and an unresolved tree maintenance issue dating back to 2022. The building has documented one intentional fire incident with no civilian injuries, though the date and specifics are not fully recorded. The property's maintenance pattern shows regular inspections and responses to identified issues, suggesting active management, though the recurring nature of certain structural problems warrants attention.