9-11 Duncan St, San Francisco, CA 94110

The two-unit residential building at 9-11 Duncan Street in Bernal Heights, owned by Garrett Michael Turner, has experienced several significant maintenance and safety issues since its construction in 1907. Most notably, in January 2004, multiple serious violations were documented, including inadequate heating, electrical system problems, and plumbing issues, leading to multiple notices of violation and a director's hearing on March 4, 2004.

Although some remedial work was attempted in 2005, including electrical upgrades and compliance work estimated at $20,000, many of these original violations remain listed as active in the records. More recently, the property has faced ongoing infrastructure challenges, with 311 calls in 2024 reporting issues such as a missing side sewer vent cover, a collapsed sidewalk (currently listed as open), and sewage backup problems. The building's recent history includes several fire alarm activations, though none resulted in fires or civilian injuries, along with multiple encampment cleanups in the vicinity.

A significant concern remains regarding the building's plumbing systems, with active complaints about improperly installed hot water heaters and plastic drain-waste-vent pipes. The property has also generated various 311 calls in 2024 related to parking issues, garbage, and sidewalk maintenance, highlighting ongoing challenges in building maintenance and surrounding infrastructure. While some improvements were attempted in the mid-2000s, the persistence of many original violations and the emergence of new infrastructure issues suggest that many of the building's historical problems remain ameliorated.