1271-1273 24th Ave, San Francisco, CA 94122

The three-unit, three-story multi-family residential building at 1271-1273 24th Avenue in the Central Sunset neighborhood, owned by Zhang Yan, was constructed in 1975 and has undergone several significant modifications and improvements over the past few decades. Notable recent work includes the 2015 legalization of a ground floor dwelling unit that was converted from a recreational room, which involved substantial renovations costing $65,000.

The building has received important safety upgrades, including the installation of sprinklers in 2016 (with related work completed in 2017) and the addition of a dedicated 80-amp meter for the basement unit's electrical service. Recent maintenance work has included roofing projects in 2015 and 1991, internal improvements to bedrooms and bathrooms in 2007, and various plumbing updates including a kitchen sink installation and bathroom vanity replacement in 2017. The property has maintained good overall maintenance standards, with the most recent building permit activity focusing on routine updates and infrastructure improvements.

While there have been several 311 calls associated with the address, these primarily relate to street cleaning, garbage removal, and parking issues, rather than building-specific problems. The most recent building-related work (including permit completions and expirations) occurred between 2016 and 2018, with no major building permits or violations recorded in the past five years, suggesting stable conditions. The property's work history demonstrates a pattern of proactive improvements, particularly regarding safety systems and unit legalization, though some permits from 2016 required subsequent renewal in 2018 to reach completion status.