646 Corbett Ave, San Francisco, CA 94114

646 Corbett Avenue is a 41-unit, three-story multi-family residential building constructed in 1967 and currently owned by General SF Holdings LLC. The property has undergone several significant safety and modernization upgrades in recent years, including a major fire alarm system upgrade in 2024 costing approximately $80,000, installation of low-frequency horns in sleeping areas, and completion of required soft-story retrofitting work in 2023 with a cost of $160,000.

The building has experienced periodic maintenance and safety compliance issues, such as three separate water-related complaints between 2020 and 2022 regarding inadequate hot water and toilet functioning, and two recent fire safety violations in 2023 related to sprinkler systems and sleeping area requirements, though these were subsequently corrected. Historical records show multiple renovation and repair projects, including extensive unit remodels in 2014-2016 (units 404, 504, and others) involving kitchen and bathroom updates, balcony repairs in 2016, and various plumbing upgrades including boiler and water heater replacements in 2022. The building has faced several enforcement actions, most notably regarding soft-story compliance, which was finally completed under the Tier 2 program.

Past violations from 2004-2006 included issues with fire safety systems, building permits, and various maintenance concerns, all of which were subsequently abated. Recent maintenance history shows ongoing attention to building systems, though periodic tenant complaints suggest some challenges with response times to maintenance requests. The property has maintained active compliance with most building codes, though it has required multiple fire alarm system corrections over the years, with the most recent violation in October 2023 now abated.