1231-1233 19th St, San Francisco, CA 94107

The two-unit residential building at 1231-1233 19th Street in Potrero Hill is a two-story, multi-family structure built in 1900, currently owned by Christina Yang and Ryan Patri. The property has undergone several significant improvements over the past decade, including the renovation of a detached accessory structure in 2013 ($29,529), installation of a new bathroom in 2013-2014, electrical updates including rewiring of a back office in 2013, and a complete reroofing in 2012.

A notable cancelled permit from 2000 had proposed a garage addition and third-floor mezzanine, while a 2017 water line replacement permit remains in expired status. The property has experienced recurring sewer issues, with four documented sewage backup incidents between 2019 and 2021, primarily involving 4-inch sewer vents, some of which showed potential tree root intrusion problems.

Two building complaints were filed in 2012 and 2015, one regarding unauthorized remodeling and potential lead paint concerns, and another about unpermitted pressure washing activities, though both cases are no longer active. The building's most recent maintenance history shows work completion in various systems, including plumbing (new shower pan, bathroom installation) and electrical (Ufer ground installation). The property has also been the subject of multiple parking-related incidents near the address, with six parking enforcement calls recorded between 2023-2025, though these are external to the building's actual maintenance and safety conditions.