1657-1661 Oak St, San Francisco, CA 94117

The property at 1657-1661 Oak Street is a two-story, multi-family residential building constructed in 1906, containing 7 units and currently owned by Oak Street Apartments LLC. The building has undergone several notable modifications and faced various maintenance issues over the years. Most recently, in early 2025, there were two sewer backup incidents reported in the same month, suggesting potential ongoing plumbing infrastructure challenges.

In 2016, there were significant concerns reported about possible illegal units, a gas leak, and a water leak in the roof, though these complaints are now marked as not active. Historical improvements to the building's systems include a 2003 electrical upgrade to 200A service and two-meter systems, and in 2011, decommissioning of a fuse box with new lighting installations. The building has a documented history of addressing safety and maintenance concerns, notably in response to multiple fire safety violations in late 2002/early 2003 that were resolved by January 2003.

These violations included issues with stairs, guardrails, self-closing doors, and combustible storage. Various unit modifications have been attempted, including a cancelled permit in 2013 that proposed significant unit reconfigurations across different floors. Regular maintenance work has been conducted, such as kitchen and bathroom improvements in 2013, roofing work in 2005, and utility system upgrades. Recent activity in 2024 shows consistent enforcement of parking regulations in the area, with multiple citations issued for driveway blocking, though these are external to the building's operations.