484-486 4th Ave, San Francisco, CA 94118

The property at 484-486 4th Avenue in the Inner Richmond is a two-story, multi-family residential building constructed in 1908, containing two units. The building underwent significant modifications between 2007-2009 following a complaint about unauthorized modifications that took place in July 2007, when an illegal unit conversion in the garage area, including a habitable room and bathroom, was discovered.

The building owner subsequently obtained permits to legalize these modifications, which included constructing new walls for a hallway, and underwent various inspections to address multiple safety concerns including heating, wiring, plumbing, and fire safety violations. All of these violations were officially abated by July 14, 2009. More recently, the building has undergone several HVAC system upgrades, with the most recent work being the installation of a ductless mini-split heat pump system in January 2023.

This followed previous furnace installations and updates to the building's electrical system in 2015-2016, including work on furnace installation in the attic and electrical upgrades to 110-amp service. The property has maintained routine compliance with basic building upkeep and safety requirements since the resolution of the 2007 violations, with no further building code violations recorded. While there have been various street cleaning and maintenance issues in the vicinity of the property reported through San Francisco's 311 system between 2019-2025, these were related to public street maintenance rather than building-specific concerns.