639 Shotwell St, San Francisco, CA 94110

639 Shotwell Street is a three-unit multi-family residential building located in San Francisco's Inner Mission neighborhood, owned by Gabriel W. Sulkes and constructed in 1900 as a three-story flats and duplex structure. The property underwent significant improvements in 2009-2010, including the installation of individual utilities for each unit (three bathrooms, kitchens, laundry facilities, and water heaters with radiant heat), electrical system upgrades with a new 400-amp service and complete rewiring, and final inspections for various building permits.

A complete new fire sprinkler system was installed in 2000 at a cost of $10,000, though earlier attempts to install this system had been cancelled or expired. The building has experienced recurring sewer-related issues, with multiple sewage back-up incidents reported in 2023-2024 from various sources including sewer vents and catch basins. Recent infrastructure concerns include open cases for pavement defects, tree root damage to sidewalks, and tree maintenance needs as of 2024.

A notable planning proposal in 2023 to replace a rear one-story structure and add a second-level roof deck was ultimately disapproved due to concerns about encroaching into the required rear yard space. The property had a housing inspection complaint filed in 2010 that was notated as not active by 2012. Recent 311 calls have primarily focused on external environmental issues such as garbage and debris, though these were resolved by city services.