270 Lisbon St, San Francisco, CA 94112

The two-unit residential building at 270 Lisbon Street in the Excelsior neighborhood is a 2-story, 1907 flats and duplex structure currently owned by Gudelia S Gonzalez 2011 Rev. The property has a documented history of unauthorized unit modifications and persistent maintenance issues.

In 2008, a significant violation was recorded for unauthorized modifications converting the building from its legal two-family dwelling status to three units, including a complete kitchen and bathroom added in the former garage space, resulting in multiple code violations including unapproved wiring, plumbing, lack of smoke detectors, improper exiting, inadequate heating, and ventilation issues. Between 2009 and 2010, several remedial actions were taken, including bathroom modifications and electrical work to remove the illegal unit, but the building continued to experience serious habitability issues. Notable recurring problems include water heater code compliance issues (2011), multiple instances of mold and mildew (1998, 2008, 2010, 2013), heating system deficiencies, and various structural concerns including stairway maintenance.

A lead paint hazard notice was issued in 2013, and more recent inspections in 2024 have documented ongoing concerns with garbage management and parking violations near the property. The building's maintenance history shows a pattern of delayed or reactive responses to code violations, with multiple permits issued to address various compliance issues between 1994 and 2010, including efforts to legalize a basement storage room and garage modifications. Recent 311 calls from 2024 indicate continued concerns with the area surrounding the property, particularly regarding parking violations and street cleaning issues, though these are external to the building's condition itself.