1421 48th Ave, San Francisco, CA 94122

1421 48th Avenue is a two-unit, 2-story multi-family residential building located in San Francisco's Outer Sunset neighborhood. Built in 1900 and currently owned by Erich Neplokh, the property has undergone several significant modifications and faced various challenges over its history. The building suffered fire damage in 1998-1999 requiring multiple repair permits, and a horizontal addition was completed in 1993 at a cost of $100,000.

Between 2003-2011, there were serious compliance issues regarding an unauthorized in-law unit in the ground floor/rear basement area, which resulted in a formal complaint and violation notice, though this was eventually abated. The property has undergone various infrastructure improvements, including sewer line repairs in 2021 and 2015, interior staircase upgrades in 2003-2004, and electrical work. The building's recent history shows fewer major structural changes, with most activity focusing on maintenance and infrastructure upkeep.

There were several 311 calls recorded between 2017-2021, primarily relating to street cleaning and maintenance issues outside the property, including a hazardous materials report in 2018 and noise complaints. A consultation regarding the possibility of adding an ADU or dwelling unit was recorded in the planning system, though this appears to have been informational rather than a formal application. The property has had various plumbing and electrical permits issued and completed over the years, indicating ongoing maintenance and system upgrades, though one electrical permit from 2004 was cancelled. While the building has experienced significant issues in the past, particularly relating to unauthorized units and fire damage, there have been no major violations recorded in recent years, and most recent work appears to be focused on routine maintenance and infrastructure repairs.