Building Permits in Helena, MT

Check permit requirements for home improvement projects in Helena. Select a project type below to see local requirements, estimated fees, and how to apply.

77 Permit Rules
20 Project Types
$45 – $3,500 Permit Fee Range
IRC 2021 Building Code

Key Exemptions in Helena

These projects typically don't require a building permit in Helena:

Cosmetic bathroom updates without electrical or plumbing changes do not require a permit.

Freestanding decks not more than 30 inches above grade are exempt from a building permit.

Replacing an existing driveway in the same footprint with no changes to the curb cut is generally exempt from permit requirements.

Replacing a light fixture or outlet with the same type does not require a permit.

Backyard fences 6 feet or under do not require a building permit.

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Helena Building Department

NameCity of Helena Community Development - Building Division
Address316 N Park Ave, Room 445, Helena, MT 59623
HoursMon-Fri 8:00am-5:00pm
Disclaimer: Always confirm with your local building department before starting your project. PermitMint provides general guidance, not legal advice.