3866-3870 Clay St, San Francisco, CA 94118

The 3866-3870 Clay Street property is a three-story, multi-family residential building located in the Presidio Heights neighborhood. Built in 1910 and classified as a flats & duplex building, it has undergone significant renovations and safety improvements over recent years. The building has been actively modernized and maintained, with particular attention to life safety systems. Most notably, a comprehensive fire sprinkler system was installed in 2021-2022 (costing over $30,000), followed by the installation of a sprinkler monitoring system in 2022 and additional fire safety improvements in 2024 that resulted in multiple fire code violations being issued and subsequently corrected.

The property has also seen substantial interior improvements, including a major renovation in 2019-2020 that involved extensive remodeling across all floors, infilling an existing lightwell, and rear facade renovation (project cost $875,000). This was followed by additional interior work in 2022 including bathroom additions and minor interior modifications. The building has a documented history of various permit activities, including electrical upgrades, plumbing improvements, and the installation of a photovoltaic system in 2021 (9.24 kW). While generally well-maintained, there have been some concerns requiring attention, including a 2022 complaint about potentially hazardous electrical and plumbing work, and the most recent fire code violations from December 2024.

The property has also experienced some infrastructure issues, as evidenced by recent 311 calls regarding sewage discharge (November 2024) and sidewalk defects (January 2025). Multiple fire safety citations have been issued and resolved over the years, indicating ongoing attention to maintaining compliant safety systems. The building's systems have been regularly upgraded, with recent work including radiant heating installation (2023) and various plumbing improvements. While the property has undergone significant modernization, the recurring nature of fire safety violations and recent infrastructure concerns suggest areas requiring continued attention.