256 Mullen Ave, San Francisco, CA 94110

The two-unit, two-story multi-family residential building at 256 Mullen Avenue in Bernal Heights, owned by the Dennis A Didonna Revocable Trust, has undergone several significant improvements and maintenance work since its construction in 1908. The property has experienced recurring issues with dry rot, particularly during the 2004-2014 period, requiring multiple repairs including siding replacement, wall repairs, and foundation work. Recent notable improvements include the installation of solar panels in 2013, a new 125-amp electrical service in 2011, and the addition of roof decks in 2021-2023.

The roof deck project, initially approved for both units, was revised in May 2023 to remove the deck from the front unit above the garage. Other recent improvements include roof deck lighting installation in 2022 and new roofing drainage systems. The building has maintained safety standards, with only one recorded unintentional building fire that resulted in no civilian injuries.

Recent activities around the property (2024-2025) have primarily involved municipal service calls, including multiple reports of abandoned vehicles and some debris removal issues, though these do not directly impact the building's condition or safety. A sidewalk defect related to tree roots was reported and resolved in late 2024. The property's permitting history shows regular maintenance and upgrading of systems, including electrical, plumbing, and general structural improvements, with most recent permits focusing on exterior enhancements and modernizations. The building's maintenance record demonstrates an ongoing commitment to addressing both routine maintenance and substantial improvements, with particular attention to upgrading outdoor space and sustainability features like solar panels and roof decks.