1316-1322 Mariposa St, San Francisco, CA 94107

The 4-unit multi-family residential building at 1316-1322 Mariposa Street in Potrero Hill, constructed in 1911, has experienced several significant maintenance and safety issues in recent years. Most notably, in 2017, multiple active building violations were documented, including problems with electrical systems (light switches, outlets), plumbing issues (sink repairs), and general dilapidation concerns involving walls, floors, windows, and missing smoke/carbon monoxide detectors. There were also complaints about a potentially hazardous stove with gas leak issues that required PG&E intervention.

These violations prompted multiple repair permits in 2017, including work on hanging ceilings in 1320 Mariposa. The building has a documented history of concerns regarding structural elements, with deck and stair safety issues recorded in both 2013 and 2004 complaints, leading to various repair permits over the years. More recent improvements include the replacement of four water heaters in 2018 and an electrical service upgrade in 2008 to 225-amp with 5 meters. The property has undergone several maintenance interventions and permit requests since 2001, addressing various structural and safety concerns.

Historical issues include unsafe rear decks (2013), significant building damage including problematic windows and plumbing concerns (2004), and unauthorized remodeling (2001). The building underwent routine DBI inspection in 1999. Regular maintenance appears to have been performed in response to violations, though several active violations remain from 2017. The area surrounding the building has experienced typical urban issues as evidenced by recent 311 calls from 2022-2024, including graffiti, sidewalk defects, and waste management concerns, which while not directly related to the building's condition, provide context about the immediate neighborhood environment.