642-646 Cole St, San Francisco, CA 94117

The 6-unit multi-family residential building at 642-646 Cole Street in Haight Ashbury, owned by the Hamann 1998 Family Trust, was constructed in 1900 and consists of three stories. The building has undergone several significant improvements over the years, with the most notable being a completed soft-story retrofit in 2017 (Tier 3) valued at $80,000, which brought the building into compliance with current seismic safety requirements.

Other major maintenance work has included rear stair tread dry rot repairs in 1997, and a furnace replacement in 2011. The building has had three routine housing inspections (1997, 2003, and 2008), with the 2003 inspection revealing multiple violations including issues with handrails, windows, egress obstruction, water damage, and security requirements, all of which were abated by August 2003. Recent activity around the property has primarily involved street-level maintenance issues, with multiple 311 calls in 2024 reporting graffiti removal, garbage cleaning, and other exterior maintenance matters.

There is one open issue from October 2024 regarding a damaged tree. The building's maintenance history shows regular attention to essential systems, including a roofing project from 1994 (status expired), while recent work has focused on addressing structural and safety requirements. While the building has experienced various maintenance issues over its history, the most critical seismic retrofit work was completed successfully, and recent building permits indicate ongoing attention to the property's upkeep.