4220-4222 18th St, San Francisco, CA 94114
The property at 4220-4222 18th Street is a three-story multi-family residential building located in the Eureka Valley/Dolores Heights neighborhood, built in 1902 and currently owned by the Bolton Family Trust. The building has undergone significant modifications and faced several compliance issues in recent years, with the most concerning patterns emerging between 2022-2024. Multiple complaints between 2022-2024 have alleged unauthorized unit conversions, with reports of the property being operated as four separate rental units instead of the legally permitted two-unit configuration.
These complaints also noted concerns about improper window replacements, including unauthorized non-conforming aluminum windows, and garage space misuse. The property underwent substantial renovations between 2015-2016, including the addition of attic bedrooms and bathrooms, electrical upgrades, and various plumbing improvements, though some work appears to have been completed without the necessary permits or proper inspections, according to recent complaints. In addition to the unauthorized unit concerns, there have been several building violations and complaints regarding basic maintenance and safety issues.
Recent building violations from August-September 2024 included a malfunctioning bathtub and improper garage usage, while previous issues from 2009 documented concerns about ceilings, deck repairs, door functionality, heater vents, and sanitation problems. The electrical system has seen multiple upgrades, including GFCI installations and kitchen rewiring, though some work appears to have been performed without proper follow-through on permits. Historical records show that the property initially had parking spaces that were subsequently eliminated through planning approvals, and there was a fire complaint in 2009 regarding blocked exits that was promptly corrected. The building's recent history shows a pattern of renovation work being completed without proper permits or inspections, particularly concerning unit conversions and additional living spaces beyond the originally permitted two-unit configuration.
4220-4222 18th St Report Contents
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Building Characteristics
Total units | 2 |
---|---|
Year built | 1902 |
Total area | 5219 sq ft |
Floors | 3 |
Tax Abatements | Home Owners |
Building Class | F - Flats & Duplex |

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Key Building Statistics
Included Addresses
- 4220 18th St, San Francisco CA 94114
- 4222 18th St, San Francisco CA 94114
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