439-441 43rd Ave, San Francisco, CA 94121

The three-story, four-unit apartment building at 439-441 43rd Avenue in San Francisco's Outer Richmond neighborhood, constructed in 1986, has undergone several significant renovations and improvements over the past decade. Most notably, recent work includes the conversion of a ground floor storage space into an Accessory Dwelling Unit (ADU) in 2020, followed by comprehensive fire safety improvements including the installation of a new fire sprinkler system and related modifications in 2022.

The building has seen consistent maintenance and upgrades, with major renovations to kitchens, bathrooms, and windows completed across multiple units between 2017 and 2019, including a full remodel of both units' kitchens and bathrooms in 2018, and the addition of laundry facilities. The property has maintained a strong focus on safety, implementing multiple fire safety improvements including the installation of a building-wide fire sprinkler system in 2017 and subsequent upgrades in 2022. While there have been several parking-related incidents recorded through 311 calls, these primarily involve temporary issues with vehicles blocking driveways between 2022 and 2025.

The building experienced a sewage backup incident in September 2022, which was promptly resolved. Fire safety records indicate seven instances of smoke detector or alarm system activation, though all were classified as unintentional with no resulting injuries or damage. Recent plumbing and electrical work was completed in 2024, suggesting ongoing maintenance and systems updates, while the property has successfully transitioned to individual utility metering for all four units, with separate backflow prevention systems installed in 2018.