1 county-level rule, plus city-specific rules for 2 cities in Fairfield County, Connecticut.
Verified from official government sources
Connecticut abolished operational county governments in 1960; Fairfield County is a Census/judicial region only. ADU regulation occurs at the town level under home rule and is governed by Conn. Gen. Stat. Sec. 8-2 (zoning enabling act). Public Act 21-29 (HB 6107, 2021) requires municipalities zoning under Sec. 8-2 to allow ADUs as of right on lots with single-family homes unless the town has formally opted out. Major Fairfield County towns including Stamford, Bridgeport, Norwalk, Greenwich, and Danbury each set their own ADU dimensional, occupancy, and permit standards through local zoning regulations.
2 cities in Fairfield County have their own accessory structures rules. Each link goes to that city's dedicated page with code citations.
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Fairfield County Ordinance Hub →