513 Potrero Ave, San Francisco, CA 94110

The two-unit residential building at 513 Potrero Avenue in Potrero Hill, owned by Jason Quashnofsky, is a 1911 two-story flats and duplex structure that has undergone several significant improvements over the past decade. Most notably, during 2015-2016, the property underwent extensive renovations including window replacement, skylight installations, interior improvements, and comprehensive updates to both units' bathrooms and kitchens, though this work initially exceeded the scope of permitted dry rot repairs and triggered a violation complaint in November 2015 that was later resolved in November 2016.

The building received major system upgrades during this period, including electrical work to replace outdated knob-and-tube wiring with modern wiring and new subpanels, installation of two new efficient furnace systems, and comprehensive plumbing improvements. More recent improvements include a roof replacement in 2018 costing $11,600, though there have been some ongoing maintenance issues noted through 311 calls, primarily related to parking problems in the vicinity, with multiple reports of blocked driveways between 2017-2022.

The building has maintained compliance with building codes since the 2015 violation, with all subsequent permits properly completed, including separate plumbing permits in 2016-2017 for various system upgrades and bathroom/kitchen improvements. While there have been some neighborhood maintenance issues reported through 311 calls (such as graffiti and street cleaning concerns), these are external to the building itself and relate more to the surrounding area rather than the property's condition or management.