469 27th Ave, San Francisco, CA 94121

The two-unit multi-family residential building at 469 27th Avenue in the Central Richmond neighborhood, owned by Tin Wai & Sau Wah Lum Chan, was constructed in 1921 and consists of two stories. The property has experienced significant sewer-related challenges in recent years, with eight reported sewage discharge incidents between November 2023 and December 2024, all involving either side sewer vents or catch basins, with the most recent cases occurring in December 2024.

These recurring sewer issues, which have all been officially documented as "Closed Case Resolved" by PUC Sewer Operations, suggest persistent infrastructure concerns. The building's history includes several permitted construction projects, though most have either expired or are no longer active: a rear addition and renovation work from 1998, new footing installation from 1999, and work continuation from 1986. Additional recent incidents affecting the property and its vicinity include a collapsed sidewalk reported in May 2023, which was documented and required attention from PG&E.

There were also two general cleaning requests related to loose garbage near the property in March 2024. It's worth noting that a tenant buyout occurred in February 2023 at the neighboring address of 459 27th Avenue, involving two tenants and totaling $70,000, though this may not directly relate to the subject property. While the building has had various repairs and improvements attempted over the years, the recurring nature of the sewer issues represents the most significant pattern of incidents in recent times, with all other historical permits and repairs appearing to have been resolved or no longer applicable.