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§ 02
When a permit is required
Permit triggers and exempt work for Delavan
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 Delavan permits
01 Do I need a building permit in Delavan, 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 City of Delavan building inspection services; exact current department name was not clearly surfaced in the reviewed public search results ↗
entry id permits/wisconsin/walworth/delavan
Educational reference. Permit rules and fees change — confirm current requirements directly with City of Delavan building inspection services; exact current department name was not clearly surfaced in the reviewed public search results before applying. Jaspector is not legal advice.