501 Duncan St, San Francisco, CA 94131

The two-story, four-unit multi-family residential building at 501 Duncan St in Noe Valley, owned by Rosemary Court Properties L, was constructed in 1964 and has undergone several significant maintenance and improvement projects over the years. Notably, a seismic upgrade was completed in 1996 at the garage level, demonstrating attention to structural safety. More recent infrastructure work includes a sewer line repair completed in 2019.

The building has undergone three routine housing inspections between 1999 and 2011, with the most recent in 2011 requiring an inspection of all building attachments by licensed professionals, though this violation was resolved within approximately one month. The property has experienced various maintenance and safety issues primarily related to the public space surrounding the building, particularly in recent years. The area has seen recurring incidents of graffiti, with the most recent cases reported in October 2023 and September 2024, though these were promptly resolved.

There have been multiple reports of street and sidewalk maintenance issues, including a blocked sidewalk (currently open as of November 2024), garbage and debris (September 2024), and various parking violations. A notable infrastructure concern was documented in November 2022 regarding a collapsed sidewalk and sunken utility vault, which was resolved. The frequency of 311 calls suggests ongoing challenges with public space maintenance around the property, though these issues are primarily external to the building itself and have generally been addressed by city services.