543 Ellington Ave, San Francisco, CA 94112

The three-unit mixed-use building at 5670-5672 Mission Street, owned by Benson W Zhen and Anna F Xu, was constructed in 1924 and features three stories with a ground-floor commercial space. The property has undergone several significant improvements over the past few decades, most recently receiving a new roof in 2021 that meets California's cool roof requirements, and previously installing a UL 300 hood and duct fire suppression system in 2008.

The building faced multiple violations in June 2015, primarily related to lead paint concerns, electrical issues, broken windows, and sanitation problems, though all these violations were abated by August 2015. Earlier complaints from 1999 mentioned inadequate entrance lighting, window sealing problems, and bathroom mold, which were resolved within a week.

Recent activity around the property has been documented through multiple 311 calls between 2024 and 2025, primarily concerning street maintenance issues such as garbage, debris, and abandoned furniture on public property, though these matters are largely unrelated to the building's condition itself. The property's historical permit record shows various renovations and compliance efforts, including work in 1989 related to handicap accessibility and ventilation improvements, and in 1986 to legalize a basement storage room. The building appears to have maintained compliance with most safety requirements since the resolution of the 2015 violations, with no recent building code violations or complaints on record.