§ MT Montana
County permits
Lewis and Clark County
Lewis and Clark County issues permits only for unincorporated areas. Inside an incorporated city? Pick the city below — its building department handles your permit.
§ 01 Unincorporated
Unincorporated Lewis and Clark County.
If your property isn't inside an incorporated city, the county permit office handles your application directly.
- Permit authority
- Montana Department of Labor and Industry, Business Standards Division, Building and Commercial Measurements Bureau (for structural permits); Lewis and Clark County Community Development and Planning Department (for zoning, planning, floodplain, and access permits)
- Website
- eBiz Montana ↗
- Online portal
- eBiz Montana ↗
- Phone
- (406) 841-2056 (State Building Codes); (406) 447-8374 (County CDP)
- Address
- 301 S. Park Avenue, 4th Floor, Helena, MT 59620 (State Building Codes Program); 316 N. Park Avenue, Room 230, Helena, MT 59623 (County CDP)
§ 02 Jurisdictions
Cities in Lewis and Clark County
Click any city for its full permit guide — authority, fees, application steps, inspections, and exempt work.
§ 03 County navigation
Information last verified for Lewis and Clark County, Montana. Permit rules and fees change frequently — verify current requirements with the issuing department before applying. Jaspector is an educational reference, not legal advice.