3860-3862 23rd St, San Francisco, CA 94114

The two-unit residential building at 3860-3862 23rd Street in Noe Valley, owned by Michael A. Heilmann and Sisto, is a two-story flats and duplex structure built in 1900. The building has undergone several significant improvements over the years, including a comprehensive window replacement project in 2007 that involved installing six new wood-clad windows in the front and eight vinyl windows in the rear.

Other major maintenance work includes a furnace change-out in 2010 and roofing work in 2000, though the roofing permit expired. More concerning was the 1992 foundation work involving retaining walls and front steps, which were also tied to garage modifications. The property has faced various maintenance and safety issues in recent years, with an open report from March 2023 documenting a collapsed sidewalk condition.

Parking-related challenges have been frequent, with multiple citations issued for driveway blocking between 2023 and 2025, including incidents in November 2023 and April 2024. The building's immediate surroundings experienced several infrastructure and maintenance issues in 2022, including a manhole cover problem that was promptly addressed, and there was one reported instance of illegal short-term rental activity at the property that was investigated and abated. The location has required attention to street cleaning matters, with several incidents of garbage and debris requiring municipal intervention, though these were all promptly resolved through city services.