638-640 Masonic Ave, San Francisco, CA 94117

The two-unit residential building at 638-640 Masonic Ave, owned by Brendan Casey, is a 2-story flats and duplex structure built in 1914 in the Park North neighborhood. The property has undergone several significant improvements and maintenance work over the past few decades, with the most recent major infrastructure work being a sewer replacement completed in 2008.

The building has seen various interior renovations including kitchen cabinet replacement in 1997, window and door installations in 1987, and sheetrock repairs in 1986, though some permits from 2004 and 1986 expired without completion, and a proposed daycare center construction in 1985 was cancelled. The property's maintenance history shows regular upkeep, including a reroofing project in 2004 and a sewer replacement, though there have been some issues with permit compliance. The surrounding area has experienced typical urban challenges as evidenced by numerous 311 calls, particularly in the last few years, with the most recent complaints in 2023 relating to street cleaning and loose garbage.

While these external issues are primarily neighborhood-wide concerns rather than building-specific problems, they reflect the environmental maintenance context around the property. Historical calls from 2019 and 2021 noted occurrences of waste and parking violations near the property, and a tree maintenance issue was reported in 2009. The building's documented history suggests regular maintenance and improvements have been made over time, though some permits from past decades were either expired or cancelled.