602-604 Castro St, San Francisco, CA 94114

The two-unit residential building at 602-604 Castro Street, owned by David Johnston Watson, is a 2-story flats and duplex structure built in 1892 in the Eureka Valley/Dolores Heights neighborhood. The property has undergone several significant improvements over the past decade, with the most recent being a $19,000 reroofing project completed in July 2023. Other major structural work includes voluntary seismic strengthening in 2014 ($34,000), basement steps replacement in 2017 ($10,000), and repair/replacement of wood siding with dry rot on the rear facade in 2017 ($5,000).

The building has seen comprehensive upgrades to its systems, including a gas line installation from garage to attic (2015), bathroom remodels (2015), and the installation of an 80% efficient furnace (2015). The electrical system was recently updated in 2022 with a standard double line to ground fault protection, and a 20-amp dedicated circuit was installed in 2015. The property has experienced recurring issues with driveway blocking, with multiple citations issued between 2022 and 2024, though these are external to the building's condition.

Recent maintenance issues include a complaint about tree roots lifting the sidewalk in November 2023. Historical records show proper maintenance of the structure, with the most recent roof work being non-visible from the right-of-way. The building's systems appear to be regularly updated and maintained, with no recorded building code violations or other significant safety concerns. The property's maintenance history suggests ongoing investment in infrastructure, with particular attention paid to seismic safety and structural integrity.