331-335 Cornwall St, San Francisco, CA 94118

The three-unit residential building at 331-335 Cornwall Street in San Francisco's Inner Richmond district is a 3-story flats and duplex structure built in 1907, currently owned by Nguyen Tho N. The building has undergone several significant maintenance and improvement projects over the past decades, with the most recent being parking enforcement issues. Historical records show multiple roofing projects (1991, 2006), extensive window replacements in 2003 (including 34 front windows, 8 rear/side windows, and 1 sliding door), and major renovations in 1991 that included electrical and plumbing work, as well as the installation of a new furnace and dryrot removal.

The building has experienced two documented gas-related incidents—one classified as a good intent call and another involving a gas leak—both with no civilian injuries recorded. The property has faced some maintenance and compliance challenges, including a heating system issue in late 2003 where temporary heating was provided by the owner, and a routine housing inspection in 2003. A possible illegal unit complaint was filed in 1994 but was resolved within a month.

More recently, there have been multiple parking enforcement issues, with nine documented cases between 2019 and 2024 regarding driveway blocking, resulting in at least three citations being issued. Other minor issues have been reported and addressed, including illegal postings in 2021 and exterior waste management concerns in 2022. The building's maintenance history suggests regular upkeep of major systems, though the pattern of parking violations indicates ongoing challenges with street access management.