423-425 35th Ave, San Francisco, CA 94121

The property at 423-425 35th Avenue in San Francisco's Outer Richmond neighborhood is a two-unit, three-story residential building constructed in 2005, currently owned by Ma Thomas Wing & Jane Tam. The building has undergone several significant modifications and faced multiple regulatory challenges throughout its history. Most recently, in 2022, a re-roofing project was completed at a cost of $12,700.

Between 2016-2017, the ground floor underwent legitimate modifications including the addition of a laundry room, storage area, and half bathroom, costing $24,000 and completed with proper permits. In 2010-2011, the property faced substantial compliance issues when unauthorized modifications were discovered, including illegally added rooms and a full bathroom on the ground floor, which prompted multiple violations and inspections. These unauthorized modifications were ultimately addressed in 2011 when all non-structural interior walls except for the light well were removed, following enforcement of a Board of Appeals decision.

The building's history includes several significant events that required regulatory attention, including the installation of an illegal wooden deck in 2005 (later addressed), and multiple complaints regarding water damage, mold, and unauthorized construction in 2010. The property has undergone several permit modifications and renewals, including a successful 2013 installation of EV charging infrastructure in the garage. Recent maintenance issues have been documented through 311 calls, primarily related to street cleaning and parking concerns, with the most recent service requests from 2024 focusing on structural maintenance and garbage disposal. The building's planning records show various attempts to address and legalize modifications, including a variance request for as-built construction in the rear yard, though some attempts were withdrawn or closed without approval.