840-842 Union St, San Francisco, CA 94133

The two-unit residential building at 840-842 Union Street in Russian Hill is a two-story flats and duplex structure built in 1959, currently owned by Brent M. Gullixson. The property has undergone several significant improvements and maintenance work since 2016, with the most substantial being a comprehensive plumbing system upgrade including new underground sewer, domestic water piping, and gas lines, along with the installation of radiant heat boilers and a complete electrical rewiring.

In late 2016, a roof deck expansion project was permitted costing $8,540. Between 2016 and 2020, multiple plumbing and electrical improvements were completed, including the installation of shower pans, bar sink plumbing, electrical receptacles, lights, and switches. The building has had several street space permits issued between 2016 and 2018, with consistent activity suggesting regular maintenance or construction-related needs.

The property has experienced minimal issues, with only two 311 calls recorded: one regarding a blocked driveway (resolved by parking enforcement) and another concerning an abandoned vehicle (towed) from 2014, though this was unrelated to the building itself. Planning records show various proposed improvements, including a rear yard staircase replacement and a partial fourth floor addition, though some of these applications were withdrawn or cancelled. The building's maintenance record indicates regular upkeep and systematic improvements to its infrastructure, particularly between 2016 and 2018, with all major permits marked as completed.