235-237 Mullen Ave, San Francisco, CA 94110

The two-unit residential building at 235-237 Mullen Avenue in Bernal Heights, owned by William Russell Carlisle, has experienced significant structural and permit-related issues in recent years. Built in 1900, this two-story flats/duplex structure has undergone numerous modifications and faced multiple violations since 2019. The most concerning period was between 2020-2022, when several unauthorized construction projects were documented, including foundation work, stair modifications, and plumbing installations, leading to multiple Notice of Violations (NOVs) under San Francisco Building Code.

Residents filed numerous complaints during this period regarding construction noise, safety concerns, and unpermitted work, particularly during mid-2021 when there were multiple reports of unauthorized construction of what appeared to be an additional apartment unit in the lower level, along with new plumbing and electrical systems. Although most of these violations were eventually addressed through permits and corrections, including a $15,000 permit in 2021 for comprehensive interior and structural work, a concerning active complaint from September 2022 remains regarding allegedly dangerous construction practices involving makeshift scaffolding and unauthorized drilling into a neighboring property. The building's history also includes a series of incomplete and expired permits in the early 2000s, and more recent maintenance work such as window replacement in 2020 and various plumbing and electrical upgrades.

While the major violation issues appear to have been resolved through proper permitting in 2021-2022, with building plans submitted to address previous NOVs, the property continues to have some underlying infrastructure concerns. This includes a passive-aggressive pattern of building modifications without proper permits and subsequent corrections, suggesting ongoing maintenance and compliance challenges. The surrounding area has experienced various municipal service calls in 2022-2024, primarily related to parking issues and street maintenance, though these are external to the building's direct operational concerns. The building's permit history shows both attempts at compliance with city regulations and a pattern of deferred maintenance being addressed only after resident complaints and official inspections.