1931 Turk St, San Francisco, CA 94115

The two-unit residential building at 1931 Turk Street in the Park North neighborhood is a two-story flats/duplex structure built in 1908, currently owned by Brian Y Isobe and Ma Sullivan. The building's permit history reveals significant structural work in 1991, including foundation and retaining wall modifications, along with subsequent revisions related to deck and stair improvements.

A vertical and horizontal addition was proposed in 1990, followed by fire sprinkler installation plans in 1998, though all these permits have since expired. An earlier permit from 1986 for work valued at $15,000 was cancelled. The property has experienced several maintenance-related incidents in recent years, as documented through 311 calls.

In 2017, there were reports of improperly stored toters (litter receptacles) and a municipal station stop maintenance issue, both of which were resolved through outreach and enforcement. A 2016 incident involving offensive graffiti on a pole was addressed by the SES Graffiti Crew. The building's location and surrounding area have shown typical urban maintenance issues, but there are no recorded health or safety violations or emergency incidents in the available data.