3540-3546 20th St, San Francisco, CA 94110

The property at 3540-3546 20th Street is a 12-unit, 2-story multi-family residential building located in San Francisco's Inner Mission neighborhood, constructed in 1907 and currently owned by Ugrin Leal K. The building has a documented history of maintenance issues and safety violations, with the most concerning recent events occurring in 2023 when two significant complaints were filed regarding illegal units - one in February alleging six unauthorized apartments behind a door at 3542 20th Street, and another in September concerning common areas. Prior to this, the building experienced multiple routine inspections revealing various code violations, including a 2021 complaint about a heavily neglected bathroom, and a 2009 incident documenting numerous maintenance issues including lack of heat and plumbing problems.

The building's fire safety record shows recurring violations, with the most recent citation in March 2023 regarding the alarm system, and previous violations in 2017 related to blocked exits, fire extinguishers, and sprinkler maintenance, though all have been marked as abated. The property has undergone several basic infrastructure improvements over the years, including reroofing work completed in 1993, and various sidewalk repairs documented between 2001 and 2009. The building's maintenance history reveals ongoing challenges with basic services, particularly heating issues, with multiple complaints about inadequate heat documented in both 2002 and 2004.

Recent 311 calls from 2024 indicate persistent issues with garbage and debris in the vicinity, though these are external to the building itself. The property has experienced three documented fire incidents over its history, including a cooking fire, electrical wiring problem, and a rubbish fire, none of which resulted in civilian injuries. While there have been multiple fire code violations cited between 2015 and 2023, all have been addressed and marked as abated, suggesting responsiveness to regulatory requirements. The building has undergone various routine inspections and received permits for necessary maintenance work over the years, though some permit records are incomplete or indicate minimal estimated costs.