4051-4053 Mission St, San Francisco, CA 94112

The two-unit residential building at 4051-4053 Mission Street in Bernal Heights, owned by Ma Henry Guo Jun, has been in operation since 1948 and has undergone several significant infrastructure improvements over the years.

The most substantial recent work includes the installation of a new roof in 2011 at a cost of $6,000, and an electrical system upgrade in 2003 involving an underground service conversion with two meters and 150 amp service. However, the property has experienced recurring sewer-related issues in recent years, with four documented incidents between March and August 2024, including three sewage back-up events from the 4-inch sewer vent and one sewage discharge from a side sewer vent.

Additionally, there have been multiple urban maintenance issues in the immediate vicinity, including three pavement defect reports in 2022 (two of which were resolved and one cancelled) and instances of graffiti on the sidewalk in front of the property in January 2022. While the building's structural and electrical systems appear to have received appropriate attention over the years, the recurring sewage issues represent the most significant recent challenge to the property's maintenance record.