3320 21st St, San Francisco, CA 94110

The two-story, four-unit multi-family residential building at 3320 21st St, owned by Pierce 2020 Revoc Tr, has a significant history dating back to its 1900 construction in the Eureka Valley/Dolores Heights neighborhood. The property has undergone various improvements and repairs over the years, including foundation work (1988), kitchen/bath remodeling (2000), and multiple attempts to add accessory dwelling units in the basement (most recently in 2018, though these permits were withdrawn).

The building has faced several maintenance and safety concerns, with building violations noted in 2002 and 2011 related to fire safety equipment and alarm systems, both of which were eventually abated. A 2005 complaint about low ceiling height in a bedroom and bathroom was resolved, and routine inspections have been conducted periodically. Recent infrastructure improvements include a completed furnace and duct work installation in June 2024 and a change to 200-amp underground service in 2004, though some permits for electrical work from 2007 are listed as expired.

The property has generated multiple 311 calls in recent years, primarily related to street cleaning issues and garbage debris (with several reports in 2023-2024), as well as occasional reports of graffiti and other urban maintenance concerns in the surrounding area. A historical investigation into alleged illegal short-term rental activity was noted in the planning records but was ultimately closed and abated. While the building has seen regular upkeep and modernization efforts, the pattern of withdrawn permit applications for basement unit conversions and the appearance of various maintenance violations suggest ongoing challenges in fully updating the property's infrastructure and compliance systems.