371 20th Ave, San Francisco, CA 94121

The two-unit residential building at 371 20th Avenue, located in San Francisco's Central Richmond neighborhood, is a two-story flats and duplex structure built in 1906 and currently owned by Li Fmly Tr. The building has undergone several significant improvements over the years, including a 1999 renovation that added a bedroom, play and laundry room, storage, and a half bath on the ground floor.

Other notable work included a reroofing project in 1993 and the removal of a gas wall heater in 2000. The property has experienced recurring sewer issues, with documented incidents of sewage backup in the 4-inch vent system in October 2018 and a flooding incident in December 2014, along with another sewer-related problem in October 2012 involving heavy grease in the lateral system.

Recent years have seen multiple 311 calls related to street cleaning and parking issues, particularly concerning vehicles blocking driveways and parking on sidewalks, with one citation issued for sidewalk parking in January 2024. The building's safety record includes three fire department responses: a malfunctioning smoke detector, an invalid assist, and a water or steam leak incident, none of which resulted in civilian injuries. While the property has experienced some maintenance challenges, particularly related to its sewer system, there are no recent records of any major structural or safety concerns.