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§ 02
When a permit is required
Permit triggers and exempt work for Darien
A building permit is required for new one- and two-family dwellings, additions, alterations, and repairs under the Wisconsin Uniform Dwelling Code (UDC), which is mandatory statewide for residential construction. Commercial projects are governed by the Wisconsin Commercial Building Code. Contact the local building inspector for permit requirements.
§ 03
Frequently asked
Common questions about Darien permits
01 Do I need a building permit in Darien, WI? ▸
A building permit is required for new one- and two-family dwellings, additions, alterations, and repairs under the Wisconsin Uniform Dwelling Code (UDC), which is mandatory statewide for residential construction. Commercial projects are governed by the Wisconsin Commercial Building Code. Contact the local building inspector for permit requirements.
last verified April 2026
source Village of Darien building inspection services; shared inspection arrangement with City of Delavan is reflected in the public fee exhibit ↗
entry id permits/wisconsin/walworth/darien
Educational reference. Permit rules and fees change — confirm current requirements directly with Village of Darien building inspection services; shared inspection arrangement with City of Delavan is reflected in the public fee exhibit before applying. Jaspector is not legal advice.