407-411 Lyon St, San Francisco, CA 94117

The 8-unit, 3-story multi-family residential building at 407-411 Lyon Street in the Park North neighborhood, owned by the Barbara Lee Trust, was constructed in 1904 and has experienced several significant maintenance and safety issues over the years. Most notably, in 2020, there were serious concerns about the building's structural integrity when unauthorized excavation work at the neighboring property (413 Lyon) allegedly undermined the foundation of 407-411 Lyon, with multiple complaints filed between April and November 2020. The building has a concerning history of electrical issues, particularly between 2007 and 2009, with multiple complaints and permits related to electrical problems including burning wires, circuit breaker issues, and unauthorized electrical work.

A routine safety inspection in 2003 revealed violations related to fire safety systems, smoke detectors, and emergency exits, all of which were abated by July 2003. The building underwent reroofing work in 2002 and has had various interior maintenance issues, including damage from a sulfuric acid leak in 2010, which appears to have been addressed promptly. Recent activity at the property primarily consists of municipal service calls for street cleaning, debris removal, and abandoned vehicle complaints in 2022-2024, with several cases relating to garbage and debris on the sidewalk.

There has been one tenant buyout case recorded at 409 Lyon Street, though no date or outcome is provided. The building appears to have maintained compliance with building codes following the 2010 remediation work, with no active violations or complaints recorded since that time, suggesting improved maintenance practices in recent years. The most recent concerns have been primarily related to external factors such as street cleaning and neighborhood issues rather than building-specific problems.