1680-1682 Union St, San Francisco, CA 94123

The two-unit, two-story multi-family residential building at 1680-1682 Union Street in Cow Hollow, owned by California 1 LLC, has a documented history dating back to its construction in 1922. The building has undergone several maintenance and improvement projects over the years, including a significant $24,000 reroofing project in 2011 and stair repair work in 1993. A noteworthy incident occurred in late 2019 when unpermitted work in a basement unit allegedly caused flooding and damage to tenant property, though this complaint is listed as not active in the system.

The building has experienced various maintenance issues, including a sewage backup in 2019 that required immediate repairs, and a blocked exit violation that was promptly corrected in 2010. The property has faced multiple incidents of graffiti and sidewalk obstruction between 2017-2023, with several involving public infrastructure like mailboxes and sidewalks, though these are not directly related to the building's condition. In 2018, there was a sewer vent issue requiring urgent attention.

A proposed project from 2002 to raise the top two stories and add a new story was ultimately cancelled. A carbon monoxide detector activation was recorded at some point, though no civilian injuries were reported. The building's maintenance history shows regular upkeep in the form of reroofing and stair repairs, while the 2019 incident remains the most concerning from a resident safety perspective, despite not being classified as an active complaint.