339-341 20th Ave, San Francisco, CA 94121

The property at 339-341 20th Avenue is a two-story, three-unit multi-family residential building constructed in 1907, currently owned by Guan Real Estate Hldg Llc. The building has experienced several maintenance and safety issues over the years, with the most recent significant concern being a leak reported in November 2023 that caused flooding to neighboring units and raised electrical concerns.

The property has undergone various improvements and repairs, including reroofing in 2016 ($16,000), a second-floor bathroom remodel in 2012 ($10,000), and the replacement of damaged rear stairs in 2005 ($7,000) following complaints about dry rot. Multiple violations were recorded in 2001, primarily related to fire safety issues including problems with fire proofing, egress obstructions, and smoke detectors, though these were abated by December 2001. The building has a history of heating system-related issues, including an unpermitted heater installation complaint in 2010, a lack of heat complaint in 2008, and more recently, the moisture-related problems in 2023 that affected electrical systems.

Several maintenance upgrades were completed between 1985-1987, including the installation of aluminum windows. Recent 311 calls from 2024 primarily relate to street-level issues such as debris and garbage cleanup, though many of these appear to be related to the surrounding area rather than direct building maintenance concerns. While the property has had its share of maintenance challenges, most historical violations appear to have been addressed, with the notable exception of the recent plumbing and electrical issues related to water damage and electrical systems in 2023.