1427 11th Ave, San Francisco, CA 94122

1427 11th Avenue is a two-unit, multi-family residential building located in San Francisco's Inner Sunset neighborhood. Built in 1908, this single-story structure has undergone several significant modifications and maintenance work over the years. The most recent improvement, completed in July 2022, involved interior demolition and flooring upgrades in the back of the building, while a substantial reroofing project was completed in 2019 at a cost of $14,000.

The building's safety systems received an important upgrade in 2016 with the installation of a new comprehensive fire alarm system, including smoke detectors and emergency features. Between 2009-2010, significant remodeling work was performed on the rear residence unit, including kitchen and bathroom renovations, with both plumbing and electrical systems updated to meet modern standards. The property has also experienced some operational changes, notably converting from retail to a childcare facility in 2015, which was permitted to accommodate up to 19 children despite planning stating a maximum of 14. The building's maintenance history shows regular upkeep, including a gas houseline extension in 2013, though a proposed two-story vertical addition was cancelled in 2007.

Recent 311 calls have primarily concerned external issues such as waste management and parking violations, with the most recent calls in 2024 regarding garbage and toter placement, which were resolved through city procedures. The property has had three instances of vehicles blocking driveways between 2018-2019, all of which resulted in citations. A water leak was reported in October 2018, though details on this incident are limited. The building's records show proper maintenance of critical systems and adherence to safety codes, with the most significant structural changes being proposed but not implemented, as seen in the cancelled 2007 addition plan.