790 20th Ave, San Francisco, CA 94121

790 20th Avenue is a three-story, 10-unit multi-family residential building constructed in 1924, currently owned by 790 20th Avenue LLC. The property has undergone several significant improvements over the years, most notably completing a mandatory soft-story retrofit in 2016 at a cost of $80,000, demonstrating compliance with San Francisco building codes. The building's mechanical systems have seen substantial upgrades, including the installation of three different boilers between 2016 and 2019, with the most recent being a LAARS MTV200 hot water boiler installed in September 2018.

While the building has experienced some safety concerns in the past, particularly in 2002 when multiple fire safety violations were recorded including issues with smoke enclosure doors, the central alarm system, fire escape ladder maintenance, and combustible storage conditions, all of these violations were promptly abated by December 2002. More recent years have shown continued attention to building maintenance and safety systems, though with some recurring issues. In 2024, a violation was issued regarding alarm system maintenance, though this was marked as abated.

The building has experienced three unintentional smoke detector activations with no fire incidents or civilian injuries recorded. Historical routine inspections in 2010, 2014, and 2002 have been conducted by Housing Inspection Services. The most recent concerns appear to be primarily related to exterior maintenance and environmental issues, with multiple reports of garbage and debris in 2024, including furniture and mattress disposal. The property appears to be actively maintained, with most historical violations being addressed and resolved in a timely manner.