679-681 40th Ave, San Francisco, CA 94121

The three-story duplex at 679-681 40th Avenue in San Francisco's Outer Richmond neighborhood, owned by Wichelhaus-hsu Min, was built in 1923 and has undergone several significant improvements over the years. The most recent work, completed in 2021, involved adding a 5' x 5' bathroom on the first floor, including associated plumbing and electrical work, as well as the installation of a solar panel system (7.6 kW with 19 modules) for Unit 2.

In 2020, there was a notable sewer vent issue that required attention. The property underwent substantial renovations in 1999-2006, including a horizontal and vertical addition, kitchen layout revisions, and an electrical service upgrade to 200 amps for both units. A fire alarm system issue was reported and resolved in late 2016.

The building's maintenance history is generally positive, with all permit work completed successfully. While there have been some environmental and public space issues in the vicinity, such as overflowing city garbage cans, defaced signs, and occasional graffiti, these incidents were primarily external to the building itself and have been resolved. The most recent property-related issues have been minor, mostly involving street maintenance and parking enforcement, with no serious building or safety concerns recorded in recent years.