1259 21st Ave, San Francisco, CA 94122

The property at 1259 21st Avenue in San Francisco's Central Sunset neighborhood is a three-story multi-family residential building constructed in 1909 and currently owned by the Shu Family Trust. Originally a single-family dwelling, the building underwent significant modifications in 2013 when a rear horizontal addition was added, transforming it into a two-unit structure with an estimated cost of $400,000. The improvements included the installation of a fire sprinkler system with 49 heads ($30,000) and complete building-wide electrical rewiring ($30,000), though there were later modifications to remove a spiral staircase and revise bathroom work at the garage level.

The building's recent history has been marked by compliance issues and resident concerns. In 2019, there was a complaint about an unpermitted dwelling unit with kitchen and bathroom facilities used for short-term rentals, which led to the removal of an illegal kitchen and clarification of the building's two-unit status. The property experienced sewer backup issues in September 2021, which were promptly resolved.

There have been multiple reports of abandoned vehicles near the property between 2015 and 2017, though these were resolved with officers unable to locate the vehicles. The most recent building-related concern involves a damaged tree reported in April 2022, which remains open as of the latest information. The property's regulatory history reveals a pattern of modifications and compliance efforts, including the removal of unauthorized features like the illegal kitchen, which was connected to multiple short-term rental listings that were subsequently removed. The building has undergone substantial improvements to meet modern safety standards, including comprehensive plumbing updates with multiple kitchens and bathrooms, while maintaining two legally recognized units following the 2020 administrative permit clarification.