1137-1139 Potrero Ave, San Francisco, CA 94110

The property at 1137-1139 Potrero Avenue in the Inner Mission neighborhood is a two-story, two-unit multi-family residential building built in 1908, currently owned by Carl Tharp. The building has undergone significant improvements in recent years, including the addition of a ground-floor accessory dwelling unit (ADU) in 2019-2020, complete with two bedrooms, two bathrooms, living room, kitchen, and a new NFPA 13 fire sprinkler system.

Major safety upgrades were implemented in 2019 with voluntary seismic retrofitting completed at a cost of $60,000. The building has received consistent maintenance and modernization work, including two complete roof replacements (2015 and 2024), kitchen and bathroom remodeling in both units, heating system upgrades, and extensive electrical system improvements.

The property has experienced numerous graffiti incidents and other public cleanliness issues in 2024, particularly affecting the sidewalk and street areas around the building, with most cases being resolved through city services. A tenant buyout was recorded in June 2024 for $61,823.38 involving two tenants at the adjacent address (1131 Potrero Avenue), though this is not directly related to the subject property. Recent improvements include a new address assignment for the ADU completed in April 2024 and the installation of new utilities and systems to support the building's modernized infrastructure.