400 43rd Ave, San Francisco, CA 94121

The two-unit residential building at 400 43rd Avenue in San Francisco's Outer Richmond neighborhood is a two-story flats and duplex structure built in 1948. The property, currently owned by Trust B, has undergone several significant renovations and faced some regulatory challenges in recent years. Most notably, a building violation was issued in 2019 for unauthorized construction work, specifically related to two openings created in the ground floor stair lobby, which was subsequently resolved in 2020-2024 through proper permitting and completion of the work.

In 2021, Unit 402 received comprehensive bathroom improvements, including a bathtub replacement with a shower, new sink installation, wall tiles, and electrical updates, with the work completed at a cost of $14,500. The building has maintained a proactive approach to maintenance, evidenced by a complete reroofing project in 2020 ($8,000), termite repairs in 2015 ($33,000), and historical dry rot repairs in 1998. The property has experienced some environmental and safety-related issues typical of urban settings, including several 311 calls in 2024 regarding street maintenance, graffiti on postal facilities, and abandoned vehicles.

There was also one recorded fire incident involving outside rubbish in an unspecified year, though no civilian injuries were reported. The building's recent history shows a pattern of proper maintenance and compliance with building codes, particularly following the 2019 violation notice, with all subsequent work being completed under proper permits and inspections, including the installation of new windows and structural modifications. The property has undergone necessary updates to comply with modern standards while addressing historical maintenance needs, such as the significant termite repairs in 2015 and earlier dry rot issues in 1998.