4075-4077 Mission St, San Francisco, CA 94112

The two-unit residential building at 4075-4077 Mission Street in Bernal Heights, owned by John David Lau, was constructed in 1965 as a two-story flats and duplex structure. The property has undergone several documented improvements over the years, including window and door replacements in 2002 (costing $6,883) and an electrical upgrade in 2003 involving an underground service conversion with two meters. These upgrades show attention to maintaining and modernizing the building's infrastructure.

Recent maintenance and safety concerns have emerged, particularly regarding the sidewalk conditions. An open case from April 2021 remains outstanding concerning a lifted sidewalk, which could pose accessibility or safety concerns. The property has experienced recurring issues with garbage and debris on the adjacent street areas, with multiple 311 calls between 2020 and 2024 reporting various types of waste, including paint spills and abandoned appliances. A November 2024 report noted exposed pole wires, though this appears to be a street infrastructure issue rather than a building concern.

The building has also faced some surface-level maintenance challenges, including a December 2023 incident of non-offensive graffiti, which was addressed with a Notice of Violation. The property's history shows a pattern of street maintenance and cleanliness issues in the immediate vicinity, with multiple reports of debris requiring intervention by city services. While the building's major systems were upgraded in the early 2000s, the most recent documented structural concern involves the sidewalk condition, which has been noted but remains unresolved. The frequency of street cleaning and maintenance calls in recent years suggests that while the building itself may be properly maintained, the surrounding area requires ongoing attention from municipal services.