Mechanical / HVAC Permit in Polson, Montana

Polson requires a mechanical / hvac permit for: Mechanical permit required for installation or alteration of furnaces, air handling units, evaporative coolers, ventilation systems, refrigeration equipment, compressors, gas piping, fireplaces, and appliance venting, per Title 50, Chapter 60, Section 104, MCA and ARM 24.301.172; Boiler permits are explicitly NOT processed by the City — 'Boiler permits are processed through the state of Montana' per the application form; Project value and calculated fee must be declared on the application; Incomplete applications will be returned unprocessed. If your project isn't listed, confirm with City of Polson Building Department (Planning & Building Department) at (406) 883-8214 before starting work.

Fees are valuation-based: $48 for the first $1,000 plus $14 per additional $1,000 up to $10,000; $166 for the first $10,000 plus $9 per additional $1,000 up to $50,000; and $514 for the first $50,000 plus $6 per additional $1,000 for systems valued over $50,000. Source: City of Polson Application for Mechanical Permit / Building Department Fee Schedule.

Plan review for a mechanical / hvac permit in Polson typically runs Up to 10 business days. This is an estimate, not a published figure — confirm current review times with City of Polson Building Department (Planning & Building Department) at (406) 883-8214.

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

Polson requires 2 inspection(s) for a mechanical / hvac permit, in order: Rough-In, Final. Schedule each through City of Polson Building Department (Planning & Building Department) ((406) 883-8214).

Apply through City of Polson Building Department (Planning & Building Department) at 106 1st Street East, Polson, MT 59860. Phone: (406) 883-8214, email: bp@cityofpolson.com. Office hours: City Hall main line (406) 883-8200, fax (406) 883-8238. Building Official: Lynda Benson, (406) 883-8216. Community Development Director: Rob Edington, (406) 883-8213. Applications may be submitted by mail (City of Polson, 106 1st Street East, Polson, MT 59860) or by email to bp@cityofpolson.com. The City also directs applicants to apply online at GovWell.com.. Official information: https://www.cityofpolson.com/building.

Polson, Montana has adopted: Montana has a mandatory statewide building code administered by the Montana Department of Labor & Industry (DLI) Building Codes Bureau, amended by the Administrative Rules of Montana (ARM) Title 24, Chapter 301. Cities, counties, and towns may become 'certified' to locally administer permitting and inspection for all or part of the code; a certified local program's adopted code 'may include only codes adopted by the Building Codes Bureau' (ARM 24.301.202). Non-certified trades/areas fall under direct state administration by the DLI Building Codes Bureau. Source: Montana DLI Building Codes Bureau, Certified City, County and Town Programs (bsd.dli.mt.gov/_docs/building-codes-permits/certified-city.pdf, updated 04/22/2026).; Polson is a Montana DLI-certified jurisdiction for Building (B), Plumbing (P), Electrical (E), and Mechanical (M) — but explicitly NOT Swimming Pool (SP) — within Polson city limits. Certified program contact on file with DLI: 'Office', (406) 883-8214. Source: Montana DLI Building Codes Bureau, 'Montana Certified Local Government Program' roster (bsd.dli.mt.gov/_docs/building-codes-permits/certified-city.pdf, updated 04/22/2026), row 'Polson | B, P, E, M | Office | 883-8214 | City Limits'. Directly fetched and text-extracted from the PDF during this research pass (2026-07-04); no 'SP' designation appears for Polson in the roster, unlike Darby, Hamilton, Manhattan, and other full-trade-certified Montana towns in this same roster which explicitly list 'SP'. No separate Lake County-level DLI certification row exists in the roster (the county itself is not a certified jurisdiction), so there is no competing county-level certification for areas outside Polson city limits.; 2021 International Building Code (IBC), as amended by ARM 24.301.131 — per City of Polson Standards for Design & Construction page (Montana Building Codes / International Code Council list); 2021 International Residential Code (IRC), as amended by ARM 24.301.154 — per City of Polson Standards for Design & Construction page; 2021 International Energy Conservation Code (IECC), as amended by ARM 24.301.161 — per City of Polson Standards for Design & Construction page; 2021 International Existing Building Code (IEBC), as amended by ARM 24.301.171 — per City of Polson Standards for Design & Construction page; 2021 International Mechanical Code (IMC), as amended by ARM 24.301.172 — per City of Polson Standards for Design & Construction page; also cited directly on the City's Mechanical Permit Application ('Title 50, Chapter 60, Section 104, MCA and ARM 24.301.172'); 2021 International Fuel Gas Code (IFGC), as amended by ARM 24.301.173 — per City of Polson Standards for Design & Construction page; 2021 International Swimming Pool and Spa Code (ISPSC), as amended by ARM 24.301.175 — per City of Polson Standards for Design & Construction page. Note: this code is listed among Montana's statewide-adopted codes referenced by the City's own Standards page, but Polson is NOT DLI-certified for Swimming Pool (SP) permitting — see codesAdopted certification note above; pool-specific permitting/inspection is understood to route to the state DLI Building Codes Bureau rather than being issued locally by Polson.; 2021 Uniform Plumbing Code (UPC), as amended by ARM 24.301.301 — per City of Polson Standards for Design & Construction page; also cited directly on the City's Plumbing Permit Application ('Title 50, Chapter 60, Section 505, MCA and ARM 24.301.301 and ARM 24.301.361'). Montana uses the Uniform Plumbing Code, not the International Plumbing Code.; 2020 National Electrical Code (NEC) — effective statewide June 11, 2022 per Montana DLI Building Codes Bureau Current Codes summary; cited directly on the City of Polson Electrical Permit Application ('Title 50, Chapter 60, Section 604, MCA and ARM 24.301.431'). Not separately listed on the City's own Standards for Design & Construction code list (which enumerates only ICC/UPC family codes), but confirmed via the statewide DLI source and the City's own electrical permit application form citation.; All codes verified directly against the City of Polson 'Standards for Design & Construction' page (Montana Building Codes / International Code Council section), https://www.cityofpolson.com/building/page/standards-design-construction, fetched and read directly during this research pass (2026-07-04).. Local amendments apply — see the Polson overview page for the full list.

No. The City's Mechanical Permit Application states directly that boiler permits are processed through the State of Montana, not the City of Polson.