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Mechanical / HVAC Permit in Kalispell, Montana

Required for heating, cooling, ventilation, and fuel gas equipment installations in Kalispell. Governed by the 2021 International Mechanical Code (IMC) and 2021 International Fuel Gas Code (IFGC).

Verified 2026-07-02 · Source

When you need this permit

  • Mechanical permit required for furnace, A/C, heat pump, and ductwork installation or replacement
  • Gas piping and fuel-gas appliance installations governed by the 2021 International Fuel Gas Code (IFGC)
  • Application submitted to the Building Department

Required documents

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Fee schedule

Mechanical Permit — valuation $1 to $2,000City of Kalispell Mechanical Permit Fee Schedule, effective 09/04/2024
$30.00
Mechanical Permit — valuation $2,001 to $10,000City of Kalispell Mechanical Permit Fee Schedule, effective 09/04/2024
$30.00 for the first $2,000 plus $16.00 for each additional $1,000 or fraction thereof
Mechanical Permit — valuation $10,001 to $50,000City of Kalispell Mechanical Permit Fee Schedule, effective 09/04/2024
$158.00 for the first $10,000 plus $8.50 for each additional $1,000 or fraction thereof
Mechanical Permit — valuation $50,001 or moreCity of Kalispell Mechanical Permit Fee Schedule, effective 09/04/2024
$498.00 for the first $50,000 plus $5.00 for each additional $1,000 or fraction thereof
Work Commenced Without a PermitPer City of Kalispell Ordinance 1889 and Resolution 5703
200% of the original permit amount

Review timeline

Plan reviewTypical estimate — confirm current times with the Kalispell building department
~1–5 business days

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

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

Inspection process

  1. 1

    Rough-In

    Ductwork and mechanical equipment rough-in before walls closed

  2. 2

    Final

    Equipment operational, combustion air and venting verified

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

Tips

  • For a typical furnace replacement valued under $2,000, the flat mechanical permit fee is $30.00 — the lowest tier on Kalispell's valuation-based table.
  • Gas piping and fuel-gas appliance work (including gas fireplace hookups) falls under the 2021 International Fuel Gas Code and is permitted through the same Mechanical Permit Fee Schedule.

Frequently asked questions

Yes. Furnace/HVAC equipment replacement requires a mechanical permit. For a typical replacement valued at $2,000 or less, the fee is a flat $30.00 per the City of Kalispell Mechanical Permit Fee Schedule, effective 09/04/2024.

In Kalispell, the published Mechanical Permit — valuation $1 to $2,000 is: $30.00. Additional published fees: Mechanical Permit — valuation $2,001 to $10,000 — $30.00 for the first $2,000 plus $16.00 for each additional $1,000 or fraction thereof; Mechanical Permit — valuation $10,001 to $50,000 — $158.00 for the first $10,000 plus $8.50 for each additional $1,000 or fraction thereof; Mechanical Permit — valuation $50,001 or more — $498.00 for the first $50,000 plus $5.00 for each additional $1,000 or fraction thereof; Work Commenced Without a Permit — 200% of the original permit amount. These are the jurisdiction's own published figures — see the fee schedule table and source citations on this page.

Plan review for a mechanical / hvac permit in Kalispell typically runs 1–5 business days. This is an estimate, not a published figure — confirm current review times with City of Kalispell Building Department at (406) 758-7730.

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

Kalispell requires 2 inspection(s) for a mechanical / hvac permit, in order: Rough-In, Final. Schedule each through City of Kalispell Building Department ((406) 758-7730).

Apply through City of Kalispell Building Department at 201 1st Avenue East, Kalispell, MT 59901 (mailing: PO Box 1997, Kalispell, MT 59903). Phone: (406) 758-7730, email: bldgdept@kalispell.com. Office hours: Not published on the department page; phone (406) 758-7730 and email bldgdept@kalispell.com listed as primary contact methods. Official information: https://www.kalispell.com/614/Building.

Kalispell, Montana has adopted: 2021 International Building Code (IBC) — with Montana/Kalispell amendments; 2021 International Mechanical Code (IMC); 2021 International Fuel Gas Code (IFGC); 2021 International Fire Code (IFC); 2021 International Existing Building Code (IEBC); 2021 International Residential Code (IRC); 2021 Uniform Plumbing Code (UPC) — Montana uses the Uniform Plumbing Code, not the International Plumbing Code; 2021 Energy Code; 2020 National Electrical Code (NEC) / NFPA 70; 2021 International Swimming Pool and Spa Code (ISPSC). Local amendments apply — see the Kalispell 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 Kalispell building department before you submit. PermitBase is an independent reference and is not affiliated with any government agency.

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Mechanical / HVAC Permit in other cities

Anaconda-Deer Lodge, MontanaBelgrade, MontanaBillings, MontanaBozeman, MontanaButte-Silver Bow, MontanaCity of Deer Lodge, MontanaColumbia Falls, MontanaDarby, Montana

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