Building Permits in Montana
We cover 16 cities in Montana. Select a city below to see local permit requirements.
About Building Permits in Montana
Building permit requirements in Montana are enforced at the local level by city and county building departments. Most jurisdictions adopt the International Residential Code (IRC) as their baseline building standard, though many cities add local amendments that can make requirements stricter or more lenient.
We currently cover 16 cities in Montana with 1,114 specific permit rules. Permit fees, processing times, and exemption thresholds vary by city — select your city below for details.
Popular Project Guides
Common home improvement projects in Montana:
Cities in Montana
Billings
Pop. 119,500
77 rules
Missoula
Pop. 78,213
77 rules
Great Falls
Pop. 60,013
77 rules
Bozeman
Pop. 58,500
77 rules
Butte
Pop. 34,854
77 rules
Helena
Pop. 34,425
77 rules
Kalispell
Pop. 31,296
77 rules
Belgrade
Pop. 12,741
77 rules
Havre
Pop. 9,362
77 rules
Anaconda
Pop. 9,124
77 rules
Livingston
Pop. 9,021
77 rules
Miles City
Pop. 8,535
77 rules
Laurel
Pop. 7,340
18 rules
Laurel
Pop. 7,215
18 rules
Lewistown
Pop. 5,873
77 rules
Dillon
Pop. 4,334
77 rules
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