601-609 Pennsylvania Ave, San Francisco, CA 94107

The property at 601-609 Pennsylvania Avenue in Potrero Hill is a two-story multi-family residential building constructed in 1918, currently containing four units and owned by Bruce Andrew Chapman. The building's most recent significant development attempt was an application in April 2024 to add a fifth unit and ADU in the basement, though this permit was ultimately cancelled.

The building has undergone several maintenance projects over the years, including two reroofing projects (completed in 1989 and 2008 at a cost of $10,500). Electrical upgrades were performed in 2005, involving the installation of bath fans, lighting, and switches. The building's history includes multiple housing inspection complaints in the 1990s regarding alleged illegal units in the garage area, though all these complaints were abated (resolved).

Recent maintenance issues have primarily involved external factors, including tree root damage to the sidewalk (2023), a sewage backup incident (2014), and several sidewalk-related concerns. Multiple 311 calls have been logged for the property in recent years, addressing various municipal service matters such as graffiti removal, waste management, and tree maintenance. The most serious recent infrastructure concern was a sewage backup in 2014 that required intervention from PUC Sewer Operations.