414-450 Duboce Ave, San Francisco, CA 94117

The 25-unit multi-family residential building at 414-450 Duboce Ave in Hayes Valley, owned by P H Sonntag Inc, has been actively maintained and upgraded since its construction in 1911. Most notably, in mid-2024, the building underwent significant fire safety system upgrades, including the replacement of the fire alarm system to comply with San Francisco Fire Department regulations, with related violations for sprinkler maintenance and alarm systems subsequently abated by August 2024. The property has experienced recurring issues with its heating and hot water systems, as evidenced by complaints in 2021 and July 2023 about no heat/hot water problems, and recent complaints about loud piping sounds in January 2025.

The building has undergone various repairs and improvements over the years, including sewer repairs in 2019, dry rot remediation on rear stairs in 2014, and multiple unit-specific bathroom renovations in 2010. Several building code violations were documented in 2006-2007 regarding heating, security, and sanitation issues, including rodent infestation and window repairs, though these were all abated by February 2007. Recent building complaints indicate ongoing maintenance and quality control challenges, including common area concerns filed in May 2023 that remain active as of October 2023.

While the property has generally maintained compliance with safety requirements, there have been periodic fire safety inspections resulting in both "no merit" findings and violations that required correction, most recently in 2023-2024. The building's maintenance history shows regular attention to necessary repairs and compliance issues, though some patterns of recurring problems have emerged, particularly regarding the heating system and water supply. Recent years have seen substantial investment in fire safety systems, including the two completed fire alarm system replacements in July 2024 costing over $80,000 combined. The property management has generally addressed violations and maintenance issues as they arise, though there are current active complaints regarding building conditions that suggest ongoing maintenance challenges.