1 county-level rule, plus city-specific rules for 1 city in Chittenden County, Vermont.
Verified from official government sources
Vermont preempts ADU restrictions statewide. Under the HOME Act (Act 47 of 2023, S.100) amending 24 V.S.A. §4412(1)(E), every municipality - including all 17 towns and cities in Chittenden County - must allow at least one accessory dwelling unit as a permitted use on any single-family residential lot meeting state criteria. Chittenden County itself has no zoning authority - regulation is town-level (Burlington, South Burlington, Essex, Williston, Colchester, Shelburne, Winooski, etc.).
1 cities in Chittenden County have their own accessory structures rules. Each link goes to that city's dedicated page with code citations.
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