441 31st Ave, San Francisco, CA 94121

The property at 441 31st Avenue in the Central Richmond district is a two-unit, two-story multi-family residential building constructed in 1970, currently owned by Robert W. and Susan G. Hum. The building's permit history shows one significant modification from 1991, when a street-level room and bathroom (without kitchen) was legalized, representing the only documented structural change in over three decades.

The property has experienced recurring sewer-related issues, with three documented sewage back-ups between 2015-2021, all involving 4-inch sewer vents, suggesting a persistent plumbing challenge. The most recent sewer service request was recorded in June 2021. The building's maintenance history also includes a general request for PUC services in May 2021, though the specific nature of this request is not detailed in the records. The property has been the subject of various municipal service requests and 311 calls over the years, including street cleaning services (most recently for a Christmas tree in January 2023), a dead animal removal request (October 2024), and several parking-related complaints.

These parking incidents include a resolved citation for a blocking driveway situation in January 2019, while issues with obstructing planters or plants and a sidewalk parking complaint were reported in 2020. Other service requests include one related to sewage systems in June 2021, though the specific nature of these issues is not extensively detailed in the records. While the building has been maintained through regular municipal service requests, the recurring nature of the sewer issues over a multi-year period stands out as the most significant pattern in the property's maintenance history, though all reported issues have been officially marked as resolved. The property's documentation shows regular interaction with city services between 2015 and 2024, with varied issues primarily related to plumbing, parking, and routine municipal services.