1231 18th Ave, San Francisco, CA 94122

This two-story, four-unit multi-family residential building located at 1231 18th Avenue in the Inner Sunset was built in 1971 and is currently owned by Simon Ze Liang Wu and Peng Hu. The property has undergone several significant permit applications and inspections over the years, with the most substantial recent work filed in 2018 for Unit B, involving major renovations including the addition of two bedrooms, two bathrooms, a family room, multiple glass sliding doors, and balcony modifications, with an estimated cost of $200,000.

An earlier attempt to add a ground floor ADU in 2017 was withdrawn. The building has a history of compliance issues and violations, particularly in the early 2000s, when multiple citations were issued for various violations, including fire safety concerns (combustible storage), water damage, and interior surface repairs, though all these violations were officially abated by June 2000.

Three routine housing inspections were conducted in 2000, 2002, and 2009, with the most recent focusing on gas meter instructions. More recent maintenance issues have been relatively minor, as evidenced by 311 calls in 2018, 2021, and 2022 primarily relating to general street cleaning and parking matters, rather than building-specific concerns. The property's recent permit activity suggests ongoing efforts to enhance and expand the living space, though not without challenges, as seen with the withdrawal of the 2017 ADU permit application.