2480 Union St, San Francisco, CA 94123

The two-unit, three-story residential building at 2480 Union Street in Cow Hollow was constructed in 1900 and is currently owned by the Borgonovo Survivors Trust. The property has undergone several significant improvements over the years, including a complete reroofing project in 2011 costing $18,920, installation of new aluminum railings and front porch improvements in 1984, and a gas line installation for a clothes dryer in 2019.

Earlier renovations included kitchen remodeling in 1989 and another reroofing project in 1988. The building's heating system underwent modernization in 2011 with the installation of PEX tubing for space heating, though this permit was eventually marked as expired.

The property has experienced recurring issues with illegal parking in the vicinity, particularly in 2024, with multiple incidents of vehicles blocking driveways, parking on sidewalks, and other unauthorized parking, resulting in several citations being issued by parking enforcement. Notably, there were two fire-related incidents recorded: a malfunctioning alarm system activation and a smoke detector activation, neither resulting in civilian injuries. The building's permit history shows regular maintenance and infrastructure improvements, though there is one expired plumbing permit from 2011 related to space heating installation which may indicate incomplete project follow-through.