534-536 Diamond St, San Francisco, CA 94114

The two-unit residential building at 534-536 Diamond Street in Noe Valley, owned by Carol A Hornibrook, is a one-story structure built in 1983. The property has undergone several significant maintenance and improvement projects over the years, with the most recent being a roofing project completed in 2021 at a cost of $7,800. In 2011, the building received substantial upgrades including the installation of new gas lines and a tankless water heater, as well as an electrical service upgrade to 200 amps with new meter boxes and sub-panels for each unit.

Earlier structural work includes foundation raising (1999), dry rot repairs (1999), and termite damage remediation (1993). The property's historical documents confirm its established two-unit residential use dating back to 1965. The building has experienced some infrastructure challenges, particularly in 2014 when there were two documented sewage backup incidents through a 4-inch vent, though these were subsequently resolved.

More recent concerns include tree root damage to the sidewalk reported in 2023 (currently open) and a parking enforcement request in 2024 (currently open). The property's maintenance history indicates regular attention to structural issues, with no recent major safety concerns or violations on record. A pattern of garbage receptacle management issues was noted between 2012 and 2017, though these appear to have been addressed through enforcement actions. Several 311 calls throughout the years have related to external factors such as street trees, parking issues, and abandoned vehicles, none of which directly impacted the building's structural integrity or habitability.