419-421 Collingwood St, San Francisco, CA 94114

The two-unit residential building at 419-421 Collingwood Street in Eureka Valley/Dolores Heights, owned by Edward A. and Jane F. Tanner, is a 2-story flats and duplex structure built in 1963.

The property has undergone several significant improvements over the past two decades, with the most recent major renovation occurring in 2019, which included a comprehensive interior remodel of a tenancy-in-common unit featuring a new kitchen, support beam installation, master bathroom and closet updates, with associated electrical and plumbing work totaling approximately $137,500. Earlier improvements include substantial structural work in 2008 involving beam reinforcement and column removal at the basement level, construction of a new wood deck, and various upgrades in 2004 including window replacement and rear facade renovation. The building has experienced one notable compliance issue, with a complaint filed in September 2000 regarding an allegedly unauthorized ground floor unit that was reportedly connected to the basement, changing the occupancy classification from R3 to R1.

This violation was abated by May 2001. More recent building maintenance concerns include sidewalk defects reported in October 2021 (still open as of the latest data) and various infrastructure maintenance calls, though these are primarily related to public infrastructure rather than the building itself. The property has maintained regular upkeep through various permits, including bathroom and kitchen remodels, electrical upgrades replacing damaged knob & tube wiring, and structural enhancements, suggesting ongoing maintenance and improvement by the current owners. Recent 311 calls have primarily related to street-level issues such as sidewalk cleanliness and repairs, rather than building-specific concerns.