20 Winfield St, San Francisco, CA 94110

The three-unit residential building at 20 Winfield Street in Bernal Heights, owned by Janis Medina, was constructed in 1974 and is classified as a two-story flats and duplex structure. The property has undergone several permitted modifications since 1998, including window and siding work, stairway improvements, and significant structural changes such as a horizontal addition and the removal of an illegal unit with the addition of a spiral staircase to the third level; however, all these permits are now expired.

The building has experienced recurring sewer-related issues, with documented sewage back-ups in 2021 and most recently in November 2024, suggesting potential ongoing plumbing infrastructure challenges. The property has been subject to various municipal service requests and complaints in recent years, with several open or recently resolved cases.

Current concerns include an open case from October 2023 regarding construction equipment blocking the sidewalk, while past issues have included driveway blocking (July 2023), tree maintenance needs (overgrown tree in 2022 and property damage concerns in 2021), and a 2021 environmental health service request that was transferred to DPH. Historical permits from 1999 indicate previous maintenance work including reroofing and rear elevation improvements, though these permits are no longer active. The building's documented service history shows a variety of property management and maintenance issues, with particular attention needed on the plumbing system and exterior maintenance, while several resolved cases suggest responsiveness to tenant concerns.