1329-1331 42nd Ave, San Francisco, CA 94122

This two-unit multi-family residential building, located at 1329-1331 42nd Avenue in San Francisco's Outer Sunset neighborhood, was constructed in 1947 and is currently owned by David S. Chia and Ky-yen Wong. The property has undergone several significant renovations and improvements over the past decades, with the most substantial work occurring between 2010-2013.

The building underwent comprehensive electrical upgrades in December 2012, including new wiring for all rooms, kitchen, and bathroom with a complete system of lights, switches, receptacles, and circuits, along with the installation of smoke detectors for safety. During the same period, substantial plumbing work was completed, including the installation of laundry facilities in unit 1331, modification of water lines, and furnace gas line installations. The garage area saw improvements with the addition of drainage for washing machines and the relocation of two furnaces.

Earlier improvements include a bathroom renovation in 2010 at unit 1329 with tub replacement and electrical upgrades, while the building's infrastructure was maintained with historical records showing reroofing in 1993 and dry rot repairs in 1992. The most recent activity at the property occurred in December 2023, when a general street cleaning issue was reported and resolved by city contractors through the Department of Public Works, though this was an external maintenance matter and not directly related to the building's condition or management. The renovation history, particularly the 2012-2013 works, suggests significant investment in modernizing the building's infrastructure, including safety systems like smoke detectors, while the 2010 and earlier records show attention to individual unit maintenance and upgrading. The comprehensive nature of the 2012 improvements indicates a substantial upgrade to the building's systems, though no recent building permits or major interventions appear on record, suggesting that the property has maintained stability in its infrastructure systems since the 2012-2013 renovation period.