4307-4309 20th St, San Francisco, CA 94114

The 2-unit residential building at 4307-4309 20th Street, owned by the Ah Litterman Family Trust, is a two-story flats/duplex structure built in 1915 in the Eureka Valley/Dolores Heights neighborhood. The property has undergone significant improvements over recent years, with the most substantial renovation occurring in 2018-2019, comprising a comprehensive interior remodel including kitchen expansion, three bathroom updates, new interior stairs, and replacement of front facade windows. Subsequent maintenance work in 2021 focused on safety enhancements, including guardrail replacements and stair repairs, with costs totaling over $65,000.

The building's systems have been regularly updated, with a new lower-level furnace installed in 2019, though a 2019 plumbing permit for kitchen and bathroom work appears to have expired. Historical records show a cluster of permit violations in 2001 related to expired permits for front garage work, though these were abated within three months. More recently, there was a period of illegal short-term rental activity in 4309 20th Street that was resolved in 2019.

The property has experienced several minor incidents, including elevator-related emergencies and one contained cooking fire, though none resulted in civilian injuries. A tree root issue affecting the sidewalk was reported in April 2024, and there have been multiple parking enforcement calls in the area, suggesting ongoing challenges with street parking availability. Recent construction activity on the property has been properly permitted and completed, with no active violations on record, indicating good current compliance with building codes and regulations.