462 18th Ave, San Francisco, CA 94121

The property at 462 18th Avenue in the Central Richmond neighborhood is a two-unit residential building constructed in 1921, currently owned by Chan Jean. The building has experienced significant plumbing and compliance issues, with recurring sewer discharge problems documented between 2024-2025, including multiple instances of sewage back-up from sewer vents in December 2024. The property has an active building violation from April 2016 regarding unauthorized modifications, including unpermitted installation of kitchen and bathroom facilities, improper electrical work, ventilation issues, and inadequate fire separation between the parking garage and habitable spaces.

A notice of violation (NOV) was filed in July 2016, with subsequent warnings in December 2016, and the case was referred to the city attorney with a director hearing scheduled for October 2017. The building's plumbing infrastructure has required maintenance work, including the replacement of the sewer house trap in January 2017, following complaints about drainage issues. Despite these repairs, the property has continued to experience sewer-related problems as evidenced by multiple service calls in late 2024.

The most recent documented issues have primarily been related to sewer discharge, with four such incidents reported between November 2024 and January 2025. Additionally, there have been repeated complaints about parking violations near the property, with multiple instances of vehicles parking on sidewalks reported throughout 2024. A withdrawn planning permit from 2018 attempted to address various compliance issues, including installation of proper separations and updated utilities, but the status remains unresolved. While some violations from 2016-2017 were marked as not active, the pattern of recent plumbing issues suggests ongoing infrastructure challenges at the property.