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Residential Mechanical / HVAC Permit in Missoula, Montana

Required 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

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Fee schedule

Mechanical Permit Issuance — for issuing each permitCity of Missoula FY26 Building-MEP Fee Schedule (Resolution 8887), Section B.1.a
$43.00
Forced-air or gravity-type furnace, burner, or heat exchanger up to 100,000 BTU/HRCity of Missoula FY26 Building-MEP Fee Schedule, Section B.2.a
$29.00
Forced-air or gravity-type furnace, burner, or heat exchanger over 100,000 BTU/HRCity of Missoula FY26 Building-MEP Fee Schedule, Section B.2.b
$34.00
Suspended heater, recessed wall heater, floor furnace, wall furnace, or gas fireplace insertCity of Missoula FY26 Building-MEP Fee Schedule, Section B.3.a
$29.00
Residential-type wood stove or solid fuel appliance, including chimneyCity of Missoula FY26 Building-MEP Fee Schedule, Section B.10.a
$57.00
Gas-piping system of one to four outlets (per fuel/gas service)City of Missoula FY26 Building-MEP Fee Schedule, Section B.11.a
$16.00
Gas-piping system, additional outlets over four, per outletCity of Missoula FY26 Building-MEP Fee Schedule, Section B.11.b
$8.00

Review timeline

Plan reviewMissoula’s published plan-review target
2–3 business days

How long did your Residential Mechanical / HVAC Permit permit actually take in Missoula?

Anonymous — one question, no email. Answers are combined and only shown once at least 5 people have reported.

Inspection process

  1. 1

    Gas Piping Pressure Test

    Required before concealing gas piping

  2. 2

    Rough-In

    Ductwork and mechanical equipment before wall cover

  3. 3

    Final

    Equipment operational, venting and combustion air verified

See the full Missoula inspection guide — scheduling & re-inspection fees →

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

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.

In Missoula, the published Mechanical Permit Issuance — for issuing each permit is: $43.00. Additional published fees: Forced-air or gravity-type furnace, burner, or heat exchanger up to 100,000 BTU/HR — $29.00; Forced-air or gravity-type furnace, burner, or heat exchanger over 100,000 BTU/HR — $34.00; Suspended heater, recessed wall heater, floor furnace, wall furnace, or gas fireplace insert — $29.00; Residential-type wood stove or solid fuel appliance, including chimney — $57.00; Gas-piping system of one to four outlets (per fuel/gas service) — $16.00; Gas-piping system, additional outlets over four, per outlet — $8.00. These are the jurisdiction's own published figures — see the fee schedule table and source citations on this page.

Missoula's published plan-review target for a residential mechanical / hvac permit is 2–3 business days.

You'll need: Mechanical Permit Application (Accela Citizen Access). See the required-documents checklist on this page for details on each.

Missoula requires 3 inspection(s) for a residential mechanical / hvac permit, in order: Gas Piping Pressure Test, Rough-In, Final. Schedule each through City of Missoula Development Services — Building Division (Community Planning, Development & Innovation) ((406) 552-6630).

Apply through City of Missoula Development Services — Building Division (Community Planning, Development & Innovation) at 435 Ryman St., Missoula, MT 59802. Phone: (406) 552-6630, email: BLDG@ci.missoula.mt.us. Office hours: Permit/application questions: Mon–Fri 9:00 AM–4:00 PM, (406) 552-6060, coordinators@ci.missoula.mt.us. Building code questions: Mon–Fri 8:00 AM–5:00 PM, (406) 552-6630, BLDG@ci.missoula.mt.us. Inspection scheduling: (406) 552-6040 or text (888) 413-4439.. Official information: https://www.ci.missoula.mt.us/3202/Building-Division.

Missoula, Montana has adopted: 2021 International Building Code (IBC) — as amended by the State of Montana; effective in Missoula September 1, 2022 per Missoula Municipal Code (MMC) 15.04.010; 2021 International Residential Code (IRC) — as amended by the State of Montana; effective September 1, 2022 per MMC 15.04.010; 2021 International Mechanical Code (IMC) — as amended by the State of Montana; effective September 1, 2022 per MMC 15.04.010; 2021 International Fuel Gas Code (IFGC) — as amended by the State of Montana; effective September 1, 2022 per MMC 15.04.010; 2021 International Existing Building Code (IEBC) — as amended by the State of Montana; effective September 1, 2022 per MMC 15.04.010; 2021 International Energy Conservation Code (IECC) — as amended by the State of Montana; effective September 1, 2022 per MMC 15.04.010; 2021 International Swimming Pool and Spa Code (ISPSC) — as amended by the State of Montana; effective September 1, 2022 per MMC 15.04.010; 2021 Uniform Plumbing Code (UPC) — as amended by the State of Montana; effective September 1, 2022 per MMC 15.04.010; 2020 National Electrical Code (NEC) — as amended by the State of Montana; effective September 1, 2022 per MMC 15.04.010; 2021 Wildland Urban Interface Code — statewide adoption by the Montana Building Codes Bureau, Administrative Rules of Montana (ARM) Title 24, Chapter 301. Local amendments apply — see the Missoula overview page for the full list.

Sources & verification

Verified against official sources. Last reviewed 2026-07-02.

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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Residential Mechanical / HVAC Permit in other cities

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