Residential Mechanical / HVAC Permit in Missoula, Montana
VerifiedRequired for heating, ventilation, air conditioning, and fuel-gas installations in Missoula residential properties. Covers furnaces, heaters, boilers, air handlers, evaporative coolers, ventilation, wood stoves, and gas piping. Governed by the 2021 International Mechanical Code and 2021 International Fuel Gas Code as amended by the State of Montana.
Verified 2026-07-02 · Source
When you need this permit
- Apply online through Accela Citizen Access
- For 1-2 family dwellings, mechanical scope is field-verified rather than plan-reviewed
- Gas piping systems require permitting per outlet count
Required documents
- Required
Mechanical Permit Application (Accela Citizen Access)
Submitted online through the Citizen Access Portal
Fee schedule
| Fee type | Amount | Notes |
|---|---|---|
| Mechanical Permit Issuance — for issuing each permit | $43.00 | City of Missoula FY26 Building-MEP Fee Schedule (Resolution 8887), Section B.1.a |
| Forced-air or gravity-type furnace, burner, or heat exchanger up to 100,000 BTU/HR | $29.00 | City of Missoula FY26 Building-MEP Fee Schedule, Section B.2.a |
| Forced-air or gravity-type furnace, burner, or heat exchanger over 100,000 BTU/HR | $34.00 | City of Missoula FY26 Building-MEP Fee Schedule, Section B.2.b |
| Suspended heater, recessed wall heater, floor furnace, wall furnace, or gas fireplace insert | $29.00 | City of Missoula FY26 Building-MEP Fee Schedule, Section B.3.a |
| Residential-type wood stove or solid fuel appliance, including chimney | $57.00 | City of Missoula FY26 Building-MEP Fee Schedule, Section B.10.a |
| Gas-piping system of one to four outlets (per fuel/gas service) | $16.00 | City of Missoula FY26 Building-MEP Fee Schedule, Section B.11.a |
| Gas-piping system, additional outlets over four, per outlet | $8.00 | City of Missoula FY26 Building-MEP Fee Schedule, Section B.11.b |
Review timeline
2–3 business days
Missoula’s published plan-review target
Inspection process
- 1
Gas Piping Pressure Test
Required before concealing gas piping
- 2
Rough-In
Ductwork and mechanical equipment before wall cover
- 3
Final
Equipment operational, venting and combustion air verified
Tips
- A typical furnace replacement (up to 100,000 BTU/HR) costs $43.00 issuance + $29.00 for the appliance = $72.00 total under the FY26 schedule.
- Gas fireplace inserts and wood stove installs are billed under Mechanical Permits, not Building Permits, in Missoula's fee schedule.
Frequently asked questions
- Do I need a permit to replace my furnace in Missoula?
- Yes. A mechanical permit is required. For a furnace up to 100,000 BTU/HR, the fee is $43.00 issuance plus $29.00 for the appliance, per the City of Missoula FY26 Building-MEP Fee Schedule.
Sources & verification
Verified against official sources. Last reviewed 2026-07-02.
- City of Missoula Development Services — Building Division (Community Planning, Development & Innovation) — official building department
- FY26 Building-MEP Fee Schedule PDF (Resolution 8887)
- Building Division | City of Missoula
Fees, timelines, and adopted codes are researched from each jurisdiction's published records — see how we verify. Requirements change and vary by project, so always confirm the current details with the Missoula building department before you submit. PermitBase is an independent reference and is not affiliated with any government agency.
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