1017 Guerrero St, San Francisco, CA 94110

The two-unit residential building at 1017 Guerrero Street in Noe Valley is a two-story flats and duplex structure built in 1887, currently owned by James S. Wieferman.

The property has undergone several significant renovations and improvements over the past few decades, with the most recent major work including a furnace replacement and new condensate drain line installation in 2020. Notable historical improvements include a garage conversion with driveway work in 2006, comprehensive bathroom and kitchen renovations for both units in 1999-2000, window size modifications, skylight addition, and foundation work completed in 1996. The building experienced a violation period in 2009-2010 related to an expired permit for garage conversion work, which transitioned through several notices before a final director hearing, though this appears to have been resolved with subsequent inspection approval in 2010.

Recent activity around the property primarily concerns street and sidewalk maintenance, with multiple 311 calls in 2023-2024 reporting issues such as graffiti on mailboxes and debris on public thoroughfares. These external maintenance matters have mostly been resolved through appropriate channels, including transfers to USPS and closure by city services. The building's maintenance history shows regular upkeep and improvements, with no recent building violations or major structural concerns reported since the 2009-2010 permit issue.