412-414 Plymouth Ave, San Francisco, CA 94112

The property at 412-414 Plymouth Avenue, a two-unit residential building constructed in 1948, has undergone several significant changes and faced multiple compliance issues over the years. Most recently, in February 2022, substantial exterior improvements were completed, including new siding on the front and back of the building and window replacements, at a cost of $15,000.

However, the building has experienced persistent infrastructure challenges, particularly with sewer problems, as evidenced by multiple sewage backup incidents from 2022 through 2024, including four occurrences between July and September 2024 from the side sewer vent. The building's history reveals a pattern of unauthorized modifications and safety concerns. In 2008-2012, there were multiple attempts to address issues with a rear deck and stairs, following concerns about dry rot and safety, including an active violation filed in January 2008.

Earlier violations from 2003-2005 documented unauthorized construction of a third dwelling unit in the garage, complete with illegal kitchen and bathroom facilities, and improper use of R-3 occupancy for a car repair business. The property has also been subject to various complaints regarding unpermitted construction work, including electrical wiring and sheetrock installations in 2007-2008, construction noise, and weekend work. Recent municipal records show ongoing maintenance of the building's basic systems, though with some notable concerns, such as a significant number of parking violations for blocking driveways reported between 2022 and 2024.