1391 20th Ave, San Francisco, CA 94122

The two-story, five-unit apartment building at 1391 20th Avenue in the Central Sunset neighborhood was constructed in 1950 and is currently owned by Sun Qian. The property has undergone several significant improvements over the past decades, with major recent work completed in 2019 including a main sewer line replacement from the garage to the curb, and in 2013-2014 involving both a soft-story retrofit (Tier 3, $60,000) to enhance seismic safety and repairs for dry rot at the building's front. The building's electrical system received substantial upgrades in late 2012, including a 200-amp service upgrade and relocation of meters/load centers from units to the garage.

Earlier maintenance work includes reroofing projects in 2013 (completed) and 1999 (expired), window replacements in 1999, and various repairs throughout the 1990s. The building's maintenance history shows regular upkeep, though there have been some recurring infrastructure issues, particularly with sewer systems, as evidenced by multiple 311 calls between 2018-2021 regarding sewer problems, including a significant backup incident in January 2019 that required professional cleaning of grease. The property has undergone routine housing inspections in 2001 and 2014, with no active violations noted.

Recent 311 calls (2020-2023) have primarily related to non-building issues such as parking, encampments, and noise complaints, rather than safety or maintenance concerns directly impacting residents. While there were some resident complaints regarding tobacco use in late 2020, these were addressed through proper channels and guidance regarding SF Health Code regulations. The most recent permit data indicates no outstanding permits or major work currently in progress.