919-923 Union St, San Francisco, CA 94133

The three-unit residential building at 919-923 Union Street in Russian Hill, owned by the Fanny Sum Woo Survivors Trust, was constructed in 1904 as a three-story flats and duplex structure. The building's most significant recent concern is an active complaint from 2017 regarding peeling paint that may present a lead hazard, which remains unresolved as of October 2023.

The property experienced a series of safety-related violations in 2005, including issues with wood stairs and posts, emergency exits, and smoke detector requirements, though these were all abated by July 28, 2005. A historical complaint from 2012 regarding unauthorized garage construction was promptly addressed and marked as not active within days.

The building has had several maintenance and service calls over the years, including a sewage backup incident in 2013 which was resolved, and multiple complaints about garbage receptacles being left out continuously in 2011. Two streetspace and sidewalk permits were issued in 2007, with associated costs of $0.00, suggesting they may have been minor or routine in nature.