The building permit application and site plan checklist must be printed and scaled to fit on 8.5" by 14" legal paper in order for this office to accept and process your application. If any of this information is incomplete or missing, the application process will be stopped. These forms may also be obtained from our office.
When Building Permits are Required
Building permits are required for the following:
Commercial building projects
Commercial storage buildings and garages of any size
Most new residential construction projects
Signs or fences over 7' in height
Residential or commercial roofing
Residential storage buildings and garages over 200 sq. ft. of floor area *
This list does not contain all types of work requiring a permit. Please call our office at 406-552-6635 before starting any type of work to determine whether you need a permit. Any residential buildings with interior dimensions of 120 sq. ft. or less do not require a building permit. More detailed information regarding required forms is available for commercial permits and for residential permits.
All building permit forms must be submitted on legal size paper (8.5" x 14"). When using from Adobe Acrobat Reader, set the paper size to legal before printing.
* Storage buildings under 120 sq. ft. may require a permit or approval from zoning.