846-850 Filbert St, San Francisco, CA 94133

The two-unit residential building at 846-850 Filbert Street in Russian Hill, owned by George Wong, is a two-story flats and duplex structure dating back to 1906. The property has undergone several notable maintenance and improvement efforts over the years, including the installation of three kitchen windows in 2013 with energy-efficient ratings (U-factor 0.40), repairs to dry-rot in the rear stairs and deck in 1997, and a roofing project initiated in 1997, though records show this permit expired.

The building's recent history shows some concerning infrastructure issues, with a sewage back-up incident near the side sewer vent reported and resolved in September 2024, marking the most recent significant plumbing event. The property has experienced numerous urban maintenance challenges in the surrounding area, particularly in 2021-2024, including multiple instances of human/animal waste (three cases in November 2021, one in June 2022, and one in May 2021) requiring city intervention, along with reports of hazardous materials (liquids) and tree-related concerns in 2021.

A recent garbage and debris complaint was resolved in December 2024. The building's maintenance record shows attention to structural improvements over the years, though the relatively high number of street cleaning and urban maintenance calls in the vicinity suggests ongoing challenges with the immediate urban environment, particularly regarding waste management and surface maintenance.