771 Wisconsin St, San Francisco, CA 94107

The two-unit residential building at 771 Wisconsin Street in Potrero Hill is a two-story flats and duplex structure built in 1952, currently owned by Carol A Sundell Separate Pr. The property has undergone several significant renovations, with the most recent being a complete re-roofing project in 2023 costing $10,700. A substantial renovation occurred in 2009, which included comprehensive updates to both units with work totaling over $141,500, encompassing bathroom remodels, kitchen renovations, electrical system upgrades (including new double meter service with 200-amp and 100-amp services), and plumbing improvements.

During this period, there was one building complaint filed regarding unauthorized work hours and missing permits, though this was quickly addressed within a day. The building's maintenance history shows attention to safety concerns, including a stair repair project in 2010 addressing rot damage. The property has experienced some recent infrastructure issues in the vicinity, with multiple reports of sidewalk defects in 2023, including one that was specifically noted as a "collapsed sidewalk" issue around a utility vault, though this was later resolved.

A sewage backup incident was reported and resolved in late 2021, and there have been occasional parking-related issues near the property, though these do not directly impact the building itself. The most recent major systems upgrade was the roofing project in 2023, suggesting regular maintenance is being performed. The building's unit configuration and boundaries were clarified in 2009, establishing it as a legal two-unit property with upper and lower unit designations (771 and 771A).