3668-3670 18th St, San Francisco, CA 94110

The three-story, two-unit multi-family residential building at 3668-3670 18th Street in Mission Dolores, constructed in 1908, has undergone several significant renovations and system upgrades over the past two decades. Most notably, between 2012-2013, the property underwent substantial improvements including a rear expansion costing $205,000, comprehensive plumbing upgrades featuring new bathrooms and kitchen facilities throughout both units, and a complete electrical rewiring with a new 200-amp service.

The building has received consistent attention to essential systems, with recent updates including a heat pump system installation and boiler replacement in 2022-2023, demonstrating ongoing maintenance of comfort systems. The building's history includes two building complaints filed in November 2013 regarding unauthorized work beyond the permitted scope, including reports of interior gutting, deck construction, and skylight installation, though these complaints were marked as not active.

Earlier permits show regular maintenance including reroofing in 2008 and window installations in 2005 and 1983. The property has experienced two fire incidents on record: a system malfunction and a minor building fire caused by equipment failure, neither resulting in civilian injuries. Recent activity at the address (2023-2024) has primarily consisted of routine street maintenance issues, with multiple reports of garbage and debris on public property, though these do not directly relate to the building's condition or safety.