1470-1472 12th Ave, San Francisco, CA 94122

The property at 1470-1472 12th Avenue in San Francisco's Inner Sunset neighborhood is a two-story multi-family residential building constructed in 1982, currently owned by the Ho Family Trust. The building has undergone significant changes and improvements over recent years, most notably in 2019-2020 when the basement was converted into a studio unit, increasing the total number of units from two to three. This conversion triggered a series of safety upgrades, including the installation of a new fire sprinkler system throughout the ground floor and basement, as well as a manual fire alarm system with sprinkler monitoring capabilities, all completed in 2020 at a combined cost of over $39,000.

The building's safety infrastructure was further enhanced with comprehensive electrical and plumbing work in 2020-2021, including the relocation of water heaters and various system upgrades. The property has a history of various maintenance and safety issues, particularly evident from 2015 to 2018, including water leakage problems, electrical issues, and concerns about unauthorized dwelling units. Multiple building violations were recorded in 2015 related to fire safety and sanitation, including mold/mildew presence, damaged ceilings, and egress obstructions.

A significant safety incident occurred in 2017 involving gas leaks connected to improperly installed water heaters, prompting emergency response and subsequent corrective actions. Notably, there is an active building violation from 2018 regarding unauthorized dwelling units that appears to have been addressed through subsequent legalization efforts. The building has also experienced various infrastructure issues over the years, including plumbing problems and historical concerns about water damage and electrical systems, as documented in complaints dating back to the 1990s. Recent 311 calls primarily relate to parking issues in the vicinity of the building, with no recent internal building complaints recorded.