1201-1203 37th Ave, San Francisco, CA 94122

The two-unit residential building at 1201-1203 37th Avenue in San Francisco's Outer Sunset neighborhood is a two-story flats and duplex structure built in 1946, currently owned by David K Chan. The building has undergone several significant maintenance updates over the decades, with the most recent being a roof replacement in May 2024 where the old tar and gravel roof was replaced with a new bitumen membrane at a cost of $12,000.

Previous roofing work was completed in December 2003, and the building has also seen attention to its structural elements, including rear stair repairs due to dry rot in 1993 and cracked stucco repairs in 1985. The property has been the subject of multiple recent 311 calls between late 2024 and early 2025, though none directly indicating building-specific issues. These calls primarily concerned external matters such as sidewalk pavement defects, graffiti, garbage and debris (including electronic waste), reports of abandoned vehicles, and park-related services.

Two encampment-related calls were logged, one of which was resolved by city services. The building's only recorded fire incident was a lock-out situation in 2015 with no civilian injuries reported. The property's maintenance record shows regular upkeep of critical systems, particularly the roofing structure which has received attention approximately every 20 years or so, with the most recent work being notably more expensive than previous roofing projects.