149-151 12th Ave, San Francisco, CA 94118

The two-unit residential building at 149-151 12th Avenue, located in the Lake-Presidio neighborhood, is a two-story flats and duplex structure built in 1907, currently owned by Donald and Sharon H. Lee. The building has undergone several significant renovations, including a complete kitchen, bathroom, and toilet room remodel on both the ground and second floors in 2004 (costing $28,000), which was accompanied by extensive electrical work including the installation of 120 lights, 10 receptacles, 10 circuits, and panels.

In 2010, the property received a new roof at a cost of $5,200. One structural modification was attempted in 2004 to add two concrete footings to support a beam, but this permit ultimately expired without completion. The property has experienced various maintenance and service calls over the years, though none appear to be directly related to the building's structural integrity or safety. In 2017, there were two street cleaning incidents involving hazardous materials and loose garbage, though nothing was found in the hazardous materials case.

A sidewalk defect was reported in 2012, revealing approximately 50 square feet of damaged sidewalk that required attention. The most recent recorded incident was a general cleaning issue in 2011 involving loose garbage. Temporary parking for moving purposes was arranged and successfully completed in May 2014. While the building itself has received proper maintenance through the years, as evidenced by the permits for roofing and substantial renovations, it should be noted that most service calls were related to street and sidewalk conditions rather than the building structure itself.