618-620 35th Ave, San Francisco, CA 94121

The three-story multi-family residential building at 618-620 35th Avenue in the Outer Richmond, owned by Christopher Chun Tung Tam, was constructed in 1987 following the demolition of a previous structure in 1986. The building has undergone several significant modifications since its construction, most notably the installation of a comprehensive sprinkler system in 1986, and more recently, the addition of solar power infrastructure in 2014, consisting of three separate installations totaling 9.84 kW with 33 roof-mounted solar panels and interactive inverters.

However, the property has faced serious regulatory challenges, with multiple investigations into potential illegal unit conversions. In 2008-2009 housing inspections revealed unauthorized units in both the basement and top floor, including reports of inadequate safety features such as missing smoke detectors and mold issues. A more recent complaint regarding possible illegal unit modifications was filed in April 2016 and remains active as of the latest available data.

The building's recent history shows consistent maintenance of core systems, including electrical upgrades with the solar installations. Outside the building itself, there have been several parking-related complaints in the vicinity, including sidewalk parking and abandoned vehicles, though these are typical urban issues not directly related to the building's condition or habitability. The property's planning records indicate scrutiny of its plans and neighborhood compatibility, particularly regarding the number of units in question, while only one false fire alarm incident has been recorded, with no civilian injuries reported.