559-561 42nd Ave, San Francisco, CA 94121

The property at 559-561 42nd Avenue is a two-unit, two-story multi-family residential building located in San Francisco's Outer Richmond neighborhood. Built in 1947 and currently owned by Kenneth S. Lee and Mee Lun, the building has undergone several significant improvements over the years.

Most notably, a horizontal addition was completed in 2004 that added bedrooms and full bathrooms to both levels at the rear of the building, costing approximately $160,884. The building's electrical systems have received multiple upgrades, including a solar power system installation in 2018 with 14 PV modules (4.2 kW rating), and kitchen electrical work in 2006 that included the installation of GFCI receptacles to meet NEC requirements. In 2006, the front-facing exterior received attention with new stucco application work completed for $6,000. The property has experienced some maintenance and compliance issues, particularly in 2015-2016, when there were multiple violations regarding refuse container (toter) storage, resulting in fines and enforcement actions.

A notable building violation occurred in 2003 regarding an unpermitted structure and fence construction in the rear yard, which was abated within several months. Earlier building complaints include a report in January 2003 about a malfunctioning garage door and mildew issues in a bedroom, which were resolved by April 2003. The building's permit history shows regular maintenance and upgrades, including comprehensive electrical work in both units, though one electrical permit from 2005 expired without completion. Parking-related issues have been documented near the property, with multiple complaints about driveway blockages between 2018-2019, though enforcement officers were unable to locate the violating vehicles in these instances.