On this page 6
§ 02
When a permit is required
Permit triggers and exempt work for Mills
Required for new construction, additions, alterations, and remodels to structures. A zoning certification application is also required for applicable projects.
Required documents
- Completed permit application form
- Site plan required if building new or adding to the outside of a structure
- Zoning certificate required for new construction and exterior additions (case by case)
- Building code
- 2021 International Codes (with local amendments) including: International Residential Code, International Building Code, International Plumbing Code, International Mechanical Code, International Fuel Gas Code, International Fire Code, and 2023 National Electrical Code.
- Contractor requirements
- Contact Building Inspector Kevin O'Hearn at (307) 234-6679 or kohearn@millswy.gov for contractor licensing information.
§ 03
Application process
Typical processing: 24 to 72 hours.
- 01 Download the appropriate permit application from the Town website or pick up a form at Town Hall.
- 02 Complete the application and attach required documents (site plan and/or zoning certificate required for new construction or exterior additions as a general rule).
- 03 Submit the completed application and documents to Town Hall at 704 Fourth Street, or fax for mechanical, plumbing, and re-roofing permits.
- 04 Staff reviews the application. Approval process may take 24 to 72 hours.
- 05 Payment of fees is due either at submission or upon approval depending on permit type.
- 06 Upon approval, permit is issued. Post the permit on-site.
- 07 Schedule required inspections by calling (307) 234-6679 or emailing info@millswy.gov.
- 08 Pass all required inspections and obtain certificate of occupancy when all inspections are complete.
Typical processing time: 24 to 72 hours.
§ 04
Fee schedule
Effective FY24
Fee type
Amount
01
Permit fee formula
Valuation-based (a Permit Fees Valuation PDF is referenced on the fee schedule page).
Fees are due either at submission or upon approval depending on permit type.
Fees change periodically. Confirm at the official fee schedule ↗ (effective FY24) before budgeting.
§ 05
Required inspections
Scheduling and sequence
How to schedule
- (307) 234-6679 (phone)
- info@millswy.gov (email)
§ 06
Frequently asked
Common questions about Mills permits
01 Do I need a building permit in Mills, WY? ▸
Required for new construction, additions, alterations, and remodels to structures. A zoning certification application is also required for applicable projects.
02 How much does a building permit cost in Mills, WY? ▸
Building permit fees in Mills, WY are set by the local building department and vary by project type and valuation. Fees are calculated as: Valuation-based (a Permit Fees Valuation PDF is referenced on the fee schedule page)..
03 How do I apply for a building permit in Mills, WY? ▸
To apply for a building permit in Mills, WY, follow these steps: 1. Download the appropriate permit application from the Town website or pick up a form at Town Hall. 2. Complete the application and attach required documents (site plan and/or zoning certificate required for new construction or exterior additions as a general rule). 3. Submit the completed application and documents to Town Hall at 704 Fourth Street, or fax for mechanical, plumbing, and re-roofing permits. 4. Staff reviews the application. Approval process may take 24 to 72 hours. 5. Payment of fees is due either at submission or upon approval depending on permit type. 6. Upon approval, permit is issued. Post the permit on-site. 7. Schedule required inspections by calling (307) 234-6679 or emailing info@millswy.gov. 8. Pass all required inspections and obtain certificate of occupancy when all inspections are complete.
04 How long does it take to get a building permit in Mills, WY? ▸
Building permit processing times in Mills, WY typically run 24 to 72 hours.. Timelines can vary based on project complexity and current department workload.
05 How do I schedule a building inspection in Mills, WY? ▸
Once your permit is issued and work reaches an inspection milestone, you can schedule a building inspection in Mills, WY via: (307) 234-6679, info@millswy.gov.
last verified April 2026
source Building and Inspections Department ↗
entry id permits/wyoming/natrona/mills
Educational reference. Permit rules and fees change — confirm current requirements directly with Building and Inspections Department before applying. Jaspector is not legal advice.