1 county-level rule, plus city-specific rules for 3 cities in New Haven County, Connecticut.
Verified from official government sources
Connecticut abolished operational county governments in 1960; New Haven County is a Census/judicial region only. The area is split between the South Central Regional Council of Governments (SCRCOG, 15 municipalities including New Haven, Meriden, Milford, Hamden, West Haven) and the Naugatuck Valley Council of Governments (NVCOG, 19 municipalities including Waterbury, Naugatuck, Cheshire, Wolcott). ADU regulation occurs at the town level under home rule, 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 by a two-thirds vote of the legislative body and the planning and zoning commission.
3 cities in New Haven County have their own accessory structures rules. Each link goes to that city's dedicated page with code citations.
See every category we cover for New Haven County — parking, noise, fences, fires, animals, pools, and more.
New Haven County Ordinance Hub →