Montana permits
Do you need a permit in Montana?
Montana enforces a state building code adopted by many jurisdictions; rural counties may have minimal permitting. Electrical and plumbing are state-licensed. Wildfire and mountain areas add review.
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These are statewide ranges. Get your exact Montana cost for your zip code and project size.
Can a homeowner pull the permit?
Yes, in most cases. Owner-occupied primary residences. Licensed trades generally required for plumbing/electrical on covered work.
Where to file: City or county building department, or the state in unincorporated areas. Billings, Bozeman, Missoula have portals. Rural areas vary. Plan review 1-3 weeks.
Permits by trade in Montana
| Trade | When required | Citation | Typical fee | DIY? |
|---|---|---|---|---|
| Plumbing | In-wall work, fixtures, water heater, gas | MT plumbing licensing | $60-$225 | Conditional |
| Electrical | Circuits, panel, service, EV charger | MT electrical; NEC | $60-$225 | Conditional |
| Mechanical (HVAC) | Heating systems, ductwork, refrigerant | MT mechanical | $75-$250 | No |
| Building (structural) | Additions, structural mods, decks | MT building code | $100-$700 | Yes |
| Roofing | Re-roofs, structural deck repair | Local | $75-$300 | Yes |
| WUI / wildfire | Forest interface zones | Local WUI | $100-$400 | Yes |
Hover a Conditional or No entry for the homeowner rule. Always confirm with your local building department, since requirements vary by jurisdiction.
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