551 Wisconsin St, San Francisco, CA 94107

The two-unit residential building at 551 Wisconsin St in Potrero Hill, owned by Christopher & Loura J Sabre, has a construction history dating back to 1913 as a two-story flats and duplex structure. The building has undergone several significant maintenance events, most notably a complete re-roofing project costing $12,880 in 2015.

The property experienced a substantial cluster of building violations in early 2015, with the Department of Building Inspection (DBI) issuing multiple notices on February 23, 2015, related to mold and mildew on various surfaces, damaged flooring, plumbing issues including a leaking toilet, security concerns regarding door locks, and general nuisance conditions - all of which were officially abated by May 28, 2015. Additional concerns in 2015 included reports of bad electrical wiring in a bedroom (April 2015), and a complaint about a rear window and enclosed porch in 1998 suggesting possible unauthorized modifications.

More recent activity at the address includes multiple 311 calls between September and November 2024 regarding building inspections and construction noise, though these appear to have been transferred for follow-up through proper channels. The property has two recorded fire incidents, both relatively minor - a system malfunction and a smoke removal situation, neither resulting in civilian injuries. External infrastructure issues have been noted, including a sidewalk defect reported in January 2023, which remains open as of the latest data.