659-661 Guerrero St, San Francisco, CA 94110

The property at 659-661 Guerrero Street is a two-story, two-unit multi-family residential building constructed in 1948, currently owned by Ahirwar Vigyan. The building has undergone limited documented renovations over the past several decades, with the most significant proposed work filed in March 2013 (permit #201303263083) showing plans for extensive modifications including adding a fourth story, creating new living spaces, and installing a hot tub, though this permit status remains "Filed" rather than completed.

Earlier permits from 1997 and 1993 for window installation and reroofing respectively have expired without indication of being completed. The building's recent external environment has experienced various typical urban issues as documented through 311 calls, though none directly concerning the building's internal conditions.

These external incidents include reports of parking violations, street defects, loose garbage, encampments, tree damage, and hazardous materials on the street/sidewalk areas, with the most recent calls occurring in 2024. Two fire-related incidents were recorded at the property, though neither resulted in injuries or significant damage – one was a public service assistance call and the other was an alarm system malfunction. Several planning applications related to the building have been filed and subsequently withdrawn or closed, including a variance request for rear yard requirements to permit the proposed fourth story addition, indicating some level of regulatory review regarding potential expansion.