County Building Permits
Ozaukee County, WI - 2026 Building Permit Guide
How to apply for a building permit in unincorporated Ozaukee County, Wisconsin. Permit authority, application steps, fees, and inspection requirements.
Permit Authority
county land and water functions for unincorporated Ozaukee County; county FAQ states the town, village, city, or county issues the building / zoning / land use permit after sanitary approval
- Department
- Address
- 121 W Main St, Port Washington, WI 53074
- Phone
- 262-284-8333
- Website
- https://www.ozaukeecounty.gov/
Application Process
General Requirements
Required Documents
- for septic-related work, state plan approval and sanitary permit materials
- Contractor requirements
- licensed installer required for some POWTS work; county FAQ says a system designed by a plumber must be installed by that plumber
Work That Does NOT Require a Permit
Contact the to confirm whether your project requires a permit before starting work.
Inspections
How to Schedule
Typical inspection sequence: county FAQ indicates sanitary approval first, then local building / zoning / land use permit
Additional Resources
- County FAQ
- Land and Water Management
- License lookup guide: Wisconsin Contractor License Requirements
- Contract template: Wisconsin Homeowner-Contractor Agreement
- Wisconsin hub: Wisconsin Contractor License & Permit Hub
Information on this page was last verified: March 2026. Permit rules and fees change — confirm current requirements directly with the before applying.
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