641-643 Bay St, San Francisco, CA 94133

The property at 641-643 Bay Street is a three-story multi-family residential building located in San Francisco's Russian Hill neighborhood, owned by the Celso-oberly Trust and built in 1941. The building has undergone several significant improvements over the decades, including a vertical addition completed in 1987 and a substantial bathroom and kitchen renovation in 1985 that involved relocating sink cabinets. More recently, in September 2019, a street space permit was issued, though no associated costs were indicated.

The building and surrounding area experienced notable infrastructure challenges in 2023-2024, with the most recent incident being a sewage backup in January 2024 that was resolved by PUC Sewer Operations. There have been recurring issues with tree-related damage to property, with two calls in 2023 related to lifted sidewalk due to tree roots, which remains an open case. Several infrastructure maintenance issues were reported and resolved in 2023, including a defaced sign, a defunct curb or curb ramp, and issues with a collapsed sidewalk, though inspectors found no problems upon investigation.

The property borders experienced general cleaning needs in February 2023, with reports of loose garbage that was subsequently addressed. A notable incident occurred in March 2023 when a tree reportedly fell, though this case was resolved. While these maintenance issues primarily relate to the building's surroundings rather than the structure itself, they indicate ongoing environmental management needs in the immediate vicinity.