1333-1335 42nd Ave, San Francisco, CA 94122

The property at 1333-1335 42nd Avenue in the Outer Sunset is a two-unit, two-story multi-family residential building constructed in 1947, currently owned by Niu Rong A. The building has undergone several significant renovations and safety upgrades over the past 15 years, most notably the recent installation of a fire sprinkler monitoring system in 2021, following the complete installation of a fire sprinkler system in 2016. Between 2015-2016, substantial improvements were made to the building, including the conversion of a playroom to a bedroom to legalize an in-law unit, along with comprehensive kitchen renovations and the installation of new utilities including water heater and furnace systems.

The ground floor was previously expanded in 2007 to add a study room, playroom, and bathroom facilities. The property has experienced recurring construction-related noise issues, with multiple complaints filed between 2022-2023, suggesting ongoing work in the vicinity or related to nearby developments. These noise complaints were generally resolved through communication with contractors and city agencies.

The building's infrastructure improvements have included comprehensive updates to electrical systems, with new fire safety equipment installed in 2021, and significant plumbing work completed in 2016. Historical records show earlier maintenance work, including reroofing completed in 1989, showing the property has received regular upkeep over the years. While the recent construction noise issues have generated concerns, they appear to be related to external developments rather than the building itself, and all reported issues have been formally resolved through appropriate channels.