1550 9th Ave, San Francisco, CA 94122

The 12-unit apartment building at 1550 9th Avenue in the Inner Sunset, owned by Theodore N & Patrici Vlahos, has undergone several significant structural and safety improvements since its construction in 1926. Most notably, the building completed its mandatory seismic retrofit in 2016 as a Tier 3 soft-story building, which included comprehensive ground floor reinforcement and foundation work costing $80,000. Recent maintenance includes a $21,281 reroofing project in 2022, though this work generated complaints about debris affecting neighboring properties.

The building has a history of safety compliance issues, with multiple fire system violations between 2016-2024 related to sprinklers, alarm systems, and extinguishers, though all have been marked as "Condition Corrected" upon subsequent inspections. In 2019, the building experienced cluster of maintenance issues that resulted in multiple housing code violations, including problems with ceilings, structural maintenance, sanitation, fire safety equipment, and electrical systems, though these were all abated by September 2021. The property has undergone regular routine inspections over the years, with the most recent housing inspections generally indicating compliance.

Historical maintenance records show attention to foundational issues, dry rot repairs, and various system upgrades, including an underground electrical service conversion completed in 2004. While the building has reported three fire incidents in recent years (two false alarms and one contained cooking fire), none resulted in civilian injuries. The property has also been subject to periodic fire safety inspections, with several violations documented and corrected between 2016 and 2024, primarily related to the building's alarm systems and fire extinguishers.