County Building Permits

Big Horn County, MT - 2026 Building Permit Guide

Building permit information for unincorporated Big Horn County and all incorporated cities. Find your jurisdiction's permit authority, application process, fees, and requirements.

Montana Updated March 2026

Important: Big Horn County issues building permits only for properties in unincorporated areas of the county. If your property is inside an incorporated city, select your city below — that city's building department handles your permits, not the county.

Unincorporated Big Horn County

Permit authority
Montana Building Codes Program
Website
EBIZ Montana
Online portal
EBIZ Montana
Phone
(406) 841-2056
Address
301 S. Park Avenue, 4th Floor, Helena MT 59601

Jurisdictions in Big Horn County

Select your jurisdiction for local permit authority, portal links, application steps, fees, and inspection requirements.

Unincorporated Big Horn County Permit guide → Crow Nation Permit guide → Hardin Permit guide → Lodge Grass Permit guide →

Information on this page was last verified: March 2026. Permit rules and fees change — confirm current requirements directly with the relevant city or county department before applying.

Related Montana Resources

License Requirements Verify your contractor's Montana license → Contract Template Free homeowner-contractor agreement →

Need help with your project?

Navigating permits in Big Horn County 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 authorities 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.