28 Mullen Ave, San Francisco, CA 94110

28 Mullen Avenue is a two-unit multi-family residential building located in Bernal Heights, constructed in 1909 and currently owned by Sandra A. May. The building has undergone several significant maintenance and repair activities over its history, with the most recent being a completed window replacement project in December 2023 that involved installing two new aluminum wood-clad double-hung windows on the second story.

Of particular concern is the building's past fire damage in 1989, which required substantial repairs to windows, doors, roof, and stairs, though these repairs were completed successfully. A noteworthy incident occurred in 1997 when a complaint was filed regarding a possible illegal unit in the basement, which was investigated and marked as not active. The property has experienced various infrastructure and maintenance issues in recent years, with 311 calls indicating ongoing concerns in the immediate vicinity.

Most recently, in January 2025, there are open issues with a collapsed sidewalk and an overgrown tree as of December 2024. Other historical documentation shows a sewer back-up incident in July 2024, and multiple reports of abandoned vehicles and parking violations on or near the property throughout 2024. A reroofing permit from 1995 is on record, though its status is shown as expired. The building's current condition appears to require attention to both the sidewalk infrastructure and tree maintenance based on the most recent service requests.