3434 21st St, San Francisco, CA 94110

The two-unit multi-family residential building at 3434 21st Street, located in the Eureka Valley/Dolores Heights neighborhood and built in 1900, has undergone several significant maintenance and upgrade projects over the past few decades. Most notably, between 2015-2017, the property underwent comprehensive system updates including dryer vent installation (2015), sewer lateral replacement and plumbing work (2017), and roofing replacement ($21,000) in 2015.

The building's electrical systems were modernized with a 200-amp service upgrade in 2004 and an overhead to underground service change in 2004, though one permit cancellation was noted in 2004. The property has experienced some maintenance challenges, including a building violation in 2015 regarding improper dryer venting that affected neighboring properties, though this was resolved within two months. Historical records from 1987-1990 show attempts at horizontal extension and fire escape relocation, but these permits ultimately expired or were cancelled.

Recent 311 calls from 2020 and 2022 indicate ongoing issues with tree root damage to sidewalks creating maintenance concerns, though these are external to the building itself. The building's management has generally addressed permits and violations in a timely manner, with completed work totaling significant investment in infrastructure improvements. Two historical complaints from 2003 regarding unauthorized construction and 2015 regarding dryer venting were properly investigated and resolved.