How do I apply for a building permit in Town of Thermopolis, WY?

1. Contact the Town of Thermopolis at (307) 864-9311 to determine whether a building permit is required for your project and to obtain the current application form. 2. Download or pick up the applicable permit application at Town Hall (115 South 6th Street). 3. Complete the application and prepare required supporting documents: site plan or plot plan, project description, contractor information, and any plans or drawings required by the Town. 4. Submit the completed application, supporting documents, and permit fee payment to Town Hall. 5. Town staff or a contracted building official reviews the submission for compliance with adopted codes. 6. Upon approval, the permit is issued. Post the permit on-site and retain a copy of approved plans at the construction site throughout the project. 7. For electrical work, obtain the required Wyoming State Electrical permit from the Division of Labor in addition to any town permit. Contact (307) 777-7261. 8. Schedule required inspections with Town staff as directed on the permit. Contact Town Hall at (307) 864-9311 to schedule. 9. Pass all required inspections and obtain final sign-off or certificate of occupancy as applicable.

How do I schedule a building inspection in Town of Thermopolis, WY?

Inspections can be scheduled via: .

City Building Permits

Town of Thermopolis, WY - 2026 Building Permit Guide

How to apply for a building permit in Town of Thermopolis, Wyoming. Permit authority, application steps, fees, and inspection requirements.

Wyoming Hot Springs County Updated March 2026

Permit Authority

Incorporated limits of the Town of Thermopolis, the county seat and only incorporated municipality in Hot Springs County. As Wyoming's county seat of Hot Springs County, Thermopolis serves as the commercial and services hub for the region. Properties outside incorporated Thermopolis limits fall under Hot Springs County jurisdiction. The Town of Thermopolis is expected to have adopted building codes appropriate to a small incorporated Wyoming municipality.

Department: Town of Thermopolis Building Department
Address: 115 South 6th Street, Thermopolis, WY 82443
Phone: (307) 864-9311
Website: https://www.thermopolis.com

Application Process

Contact the Town of Thermopolis at (307) 864-9311 to determine whether a building permit is required for your project and to obtain the current application form.
Download or pick up the applicable permit application at Town Hall (115 South 6th Street).
Complete the application and prepare required supporting documents: site plan or plot plan, project description, contractor information, and any plans or drawings required by the Town.
Submit the completed application, supporting documents, and permit fee payment to Town Hall.
Town staff or a contracted building official reviews the submission for compliance with adopted codes.
Upon approval, the permit is issued. Post the permit on-site and retain a copy of approved plans at the construction site throughout the project.
For electrical work, obtain the required Wyoming State Electrical permit from the Division of Labor in addition to any town permit. Contact (307) 777-7261.
Schedule required inspections with Town staff as directed on the permit. Contact Town Hall at (307) 864-9311 to schedule.
Pass all required inspections and obtain final sign-off or certificate of occupancy as applicable.

Typical processing time: Not published; likely 1 to 5 business days for straightforward residential projects given the small size of the municipality. Confirm with Town Hall.

Source: Town of Thermopolis Building Department

General Requirements

The Town of Thermopolis is expected to require permits for new construction, additions, alterations, demolitions, and changes of occupancy consistent with its adopted building codes. Specific exempt categories (small accessory structures, fences, etc.) have not been published in readily accessible sources. Contact Town Hall at (307) 864-9311 to confirm permit requirements for a specific project.

Required Documents

Completed building permit application
Plot plan or site plan
Building plans or drawings (level of detail may vary by project type and size)
Contractor license information where applicable

Permit validity: Not published in accessible sources; most Wyoming municipalities use 180-day validity periods consistent with the International Residential Code. Confirm with Town Hall.
Building code: The Town of Thermopolis has not published a clearly accessible list of adopted codes online. Small Wyoming municipalities commonly adopt the International Residential Code and International Building Code, often with a lag of one or two edition cycles. The Wyoming State Electrical Code (NFPA 70) and Wyoming State Fire Marshal requirements apply regardless of local adoption. Confirm current code adoption with Town Hall.
Owner-builder: As a small Wyoming municipality, Thermopolis is expected to permit homeowners to obtain permits and perform work on their own primary residence. Wyoming has no statewide general contractor license requirement. Confirm owner-builder eligibility with Town Hall, particularly for electrical, plumbing, and mechanical work.
Contractor requirements: Wyoming has no statewide general contractor licensing requirement. The Town of Thermopolis has not been identified as having adopted a comprehensive local contractor licensing ordinance. For electrical work, the Wyoming Division of Labor's Electrical Program applies statewide. Confirm any local contractor registration or insurance requirements with Town Hall.

Fees

Payment note: Fees are expected to be paid in person at Town Hall. Accepted payment methods not published; confirm by phone.

Work That Does NOT Require a Permit

Contact the Town of Thermopolis Building Department to confirm whether your project requires a permit before starting work.

Inspections

How to Schedule

()

Inspection hours: Monday through Friday, approximately 8:00 AM to 5:00 PM (confirm current hours by phone)

Typical inspection sequence: No formal published inspection sequence identified. For new residential construction, a typical sequence consistent with IRC practice would include footing/foundation, framing rough-in, insulation, mechanical/electrical/plumbing rough-in, and final inspection. Confirm required inspections with Town Hall at time of permit issuance. Wyoming State Electrical inspections are conducted by the Division of Labor's Electrical Program in addition to any town inspections at (307) 777-7261.

Additional Resources

Building code: The Town of Thermopolis has not published a clearly accessible list of adopted codes online. Small Wyoming municipalities commonly adopt the International Residential Code and International Building Code, often with a lag of one or two edition cycles. The Wyoming State Electrical Code (NFPA 70) and Wyoming State Fire Marshal requirements apply regardless of local adoption. Confirm current code adoption with Town Hall.
Town of Thermopolis Official Site
Wyoming Division of Labor -- Electrical Program
Wyoming State Fire Marshal
Wyoming Department of Environmental Quality -- Water Quality Division
Wyoming Uniform Building Code Commission
FEMA Flood Map Service Center
License lookup guide: Wyoming Contractor License Requirements
Contract template: Wyoming Homeowner-Contractor Agreement
Wyoming hub: Wyoming Contractor License & Permit Hub

Information on this page was last verified: March 2026. Permit rules and fees change — confirm current requirements directly with the Town of Thermopolis Building Department before applying.

Frequently Asked Questions

Town of Thermopolis Building Permit FAQ

Do I need a building permit in Town of Thermopolis, WY?: The Town of Thermopolis is expected to require permits for new construction, additions, alterations, demolitions, and changes of occupancy consistent with its adopted building codes. Specific exempt categories (small accessory structures, fences, etc.) have not been published in readily accessible sources. Contact Town Hall at (307) 864-9311 to confirm permit requirements for a specific project.
How do I apply for a building permit in Town of Thermopolis, WY?: 1. Contact the Town of Thermopolis at (307) 864-9311 to determine whether a building permit is required for your project and to obtain the current application form. 2. Download or pick up the applicable permit application at Town Hall (115 South 6th Street). 3. Complete the application and prepare required supporting documents: site plan or plot plan, project description, contractor information, and any plans or drawings required by the Town. 4. Submit the completed application, supporting documents, and permit fee payment to Town Hall. 5. Town staff or a contracted building official reviews the submission for compliance with adopted codes. 6. Upon approval, the permit is issued. Post the permit on-site and retain a copy of approved plans at the construction site throughout the project. 7. For electrical work, obtain the required Wyoming State Electrical permit from the Division of Labor in addition to any town permit. Contact (307) 777-7261. 8. Schedule required inspections with Town staff as directed on the permit. Contact Town Hall at (307) 864-9311 to schedule. 9. Pass all required inspections and obtain final sign-off or certificate of occupancy as applicable.
How long does it take to get a building permit in Town of Thermopolis, WY?: Typical processing time is Not published; likely 1 to 5 business days for straightforward residential projects given the small size of the municipality. Confirm with Town Hall..
How do I schedule a building inspection in Town of Thermopolis, WY?: Inspections can be scheduled via: .

Need help with your project?

Navigating permits in Town of Thermopolis can be complicated.

Jaspector connects you with local experts who can review your scope, verify your contractor, and help you understand what permits your project actually needs.

Learn how Jaspector works

Important: This page is an educational resource provided by jaspector.com. It is not legal advice, and it does not substitute for official guidance from the permit authority listed above. Permit requirements, fees, and processes change frequently. Always verify current requirements directly with the issuing department before beginning any construction project. Use of this page does not create an attorney-client relationship. Jaspector assumes no liability for any outcomes arising from reliance on this information.

Other cities in Hot Springs County

Unincorporated Area

View all Hot Springs County jurisdictions →