1270 21st Ave, San Francisco, CA 94122

The 4-unit, 2-story multi-family residential building at 1270 21st Avenue in the Central Sunset neighborhood, owned by Thomas S M & Chi Mei Cheng, has undergone several significant improvements and faced recurring maintenance challenges since its construction in 1960. Most recently, the building received a new roof in 2016 at a cost of $12,000, following multiple roofing works throughout its history.

A notable renovation occurred in 2013 when unit #201 underwent unauthorized kitchen and bathroom remodeling, which was subsequently corrected with proper permits costing $18,000. The building has experienced recurring issues related to fire safety, with violations documented in both 2001 and 2009 regarding fire escape ladder maintenance, egress obstructions, fire extinguisher requirements, and security lock deficiencies, though these violations have been resolved.

Three separate sewage backup incidents (most recently in 2021) and various street cleaning issues have been documented through 311 calls, including recent garbage overflow cases in 2023. A routine housing inspection was conducted in 2018, and while a 2013 complaint about unpermitted construction was filed and subsequently resolved, no active violations are currently on record. The building's maintenance history shows a pattern of addressing violations and completing routine upkeep, though the recurring nature of certain issues, particularly regarding sewer maintenance and fire safety, is noteworthy.