847-851 Cole St, San Francisco, CA 94117

The three-unit residential building at 847-851 Cole Street, located in the Parnassus/Ashbury Heights neighborhood, has undergone several significant renovations and faced various maintenance challenges since its construction in 1909. The property features three stories and has been continuously updated over the years, with the most recent substantial work occurring in 2020-2021, including the addition of a bathroom and closets in Unit 851, with associated plumbing and electrical work completed in early 2021. Previous major improvements include a horizontal addition at the third floor in 2017, involving bathroom expansions and remodeling, though this work underwent a revision to remove planned skylights.

The building's infrastructure has seen considerable upgrade work, including a hydronic heating system installation in 2010, electrical rewiring of all three floors in 2009-2010, and various plumbing system improvements such as sewer line replacement in 2014. The building has experienced some significant incidents in its history, including a major fire in 2003 that primarily affected the second floor, though it was subsequently repaired and brought back into compliance. Several violations were recorded in 2002 relating to heat provision, water damage, and various interior surface issues, which were all addressed by 2003. A 2010 routine inspection noted several items requiring attention, including fire extinguisher maintenance and security improvements, all of which were resolved.

Recent 311 calls from 2023-2024 primarily relate to exterior maintenance issues such as garbage removal and sidewalk cleaning. The property has undergone several planning processes, including a proposed conversion of the crawlspace to a parking garage and a dwelling unit merger project, both of which are now marked as closed in planning records. The building's owner, Theodore S. Ridgway Jr., has maintained regular updates to the property, with all recent work being properly permitted and completed according to records.