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Commercial Building Permit (New Construction / Addition / Remodel / Tenant Improvement) in Hamilton, Montana

Required for new construction, additions, remodels, re-siding, re-roofing, repairs, tenant improvements, and change of use for commercial and industrial buildings in Hamilton. Uses a dedicated Commercial Building Permit Application distinct from the Residential Building Permit Application. Reviewed against the 2021 IBC and related adopted codes by the Planning Department, Public Works, and the Building Official; fire sprinkler and fire alarm plans are submitted as part of this same application rather than a separate fire-department permit (see the Fire Sprinkler / Fire Alarm Permit entry). Change of Use is one of this application's own Proposed Work checkboxes rather than a separate product (see the Change of Use / Certificate of Occupancy entry).

Verified 2026-08-26 · Source

When you need this permit

  • New construction, addition, remodel, re-side, re-roof, repair, or change of use of a commercial/industrial structure — checked as 'Proposed Work' on the Commercial Building Permit Application
  • Complete, signed permit application including legal description, owner, and contractor information
  • Complete, signed site plan checklist
  • Two copies of complete construction plan sets plus one digital (PDF) copy
  • Energy compliance calculations (ComCheck, energycodes.gov/comcheck)
  • Plan sets must be complete at submittal — the City does not accept deferred submittals
  • Plan set must include: general information/cover sheet, site plan (utilities, water & sewer service, grading, drainage, site improvements), architectural plans, structural plans, energy calcs, electrical plan with load calculations, plumbing plan, and mechanical plan
  • A Montana Professional Engineer or Montana registered Architect stamped set of plans is required for new commercial buildings and additions, projects with structural alterations, interior alterations with an occupancy change, Group A/E/F/H/I/R-1/R-2/R-4 occupancies, mixed-occupancy projects other than R-3 and U, and several other listed triggers
  • Fire sprinkler/fire alarm layouts and specs are included in the plan set 'if applicable,' and the Plot Plan/Site Accessibility Plan must show fire riser room, hydrant locations, and water main size
  • Submittals routed to Planning, Zoning, Public Works, and the Building Official for approval
  • Detached structures require separate permits; electrical, plumbing, and mechanical work each require their own separate permit

Required documents

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Fee schedule

Building Permit Fee
No valuation-based Building Division fee table for commercial construction was found published. Show full citationNo valuation-based Building Division fee table for commercial construction was found published. The Commercial Building Permit Application itself (7 pages) has no fee fields anywhere on the form — its office-use section records Construction Type, Occupancy Type, # of Stories, # of Dwelling Units, Max Occupant Load, and Sprinklered Y/N, but no permit-fee or plan-check-fee line. The 2021 Planning & Public Works Fee Schedule (effective April 7, 2021) likewise contains no Building Division valuation-fee table — it covers only Planning/Public Works/Engineering review items. Left null rather than inferring a figure, matching the same unresolved gap already documented on the Residential Building Permit, Change of Use, and Fire Sprinkler/Alarm permit types for Hamilton.
Not published — contact the department
Commercial Site Plan Review
City of Hamilton 2021 Planning & Public Works Fee Schedule (effective April 7, 2021), 'Engineering Site Plan Review' section, line item 'Commercial Site Plan Review (up to 3-hours) $150 + $40/hour… Show full citationCity of Hamilton 2021 Planning & Public Works Fee Schedule (effective April 7, 2021), 'Engineering Site Plan Review' section, line item 'Commercial Site Plan Review (up to 3-hours) $150 + $40/hour for each hour over 3.' This is a Public Works/Engineering site-plan review fee tied to the site plan checklist required with this application — distinct from, and not a substitute for, a Building Division plan-check fee, which is not published.
$150 for the first 3 hours, plus $40 per additional hour
Double Fee PenaltyPrinted directly on the Commercial Building Permit Application: 'BEGINNING CONSTRUCTION WITHOUT A PERMIT MAY RESULT IN DOUBLED FEES PER HMC 15.08.080.'
Fee doubled if construction begins without a permit

Review timeline

Plan reviewHamilton’s published plan-review target
10–10 business days

How long did your Commercial Building Permit (New Construction / Addition / Remodel / Tenant Improvement) permit actually take in Hamilton?

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

Inspection process

  1. 1

    Foundation/Footing

    Before concrete pour — foundation plan, footing details, depth, embedded hardware and reinforcing steel per submitted plans

  2. 2

    Framing

    Structural framing per approved plans before walls are closed

  3. 3

    Final

    Completed work verified against approved plans; Building Official sign-off required before occupancy

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

Tips

  • Hamilton's Commercial Building Permit Application is a separate 7-page form from the Residential Building Permit Application, with its own document submittal checklist, plan-sheet-by-plan-sheet requirements, and a longer list of projects that trigger a Montana PE/Architect stamp.
  • There is no dedicated Building Division fee table for commercial construction — the only commercial-specific fee found published anywhere on the City's site is the Planning/Public Works 'Commercial Site Plan Review' fee ($150 for the first 3 hours, $40/hour after that), which is not a substitute for a building-permit or plan-check fee. Get a written quote from the Building Department before budgeting.
  • Fire sprinkler and fire alarm plans are not a separate city permit — they are submitted as part of this same Commercial Building Permit's document set ('Fire sprinkler/Fire alarm layouts and specs, if applicable'), and the office-use section tracks 'Sprinklered: Y/N.' See Hamilton's Fire Sprinkler / Fire Alarm Permit entry.
  • 'Change of Use' is checked as one of the Proposed Work options on this same application rather than requiring a separate form — see Hamilton's Change of Use / Certificate of Occupancy entry for that scope specifically.
  • The application's own step-5 instruction prints the inspection-scheduling number as 406-880-3238, which matches neither of the two numbers published elsewhere by the City for inspection scheduling -- Building Inspector Tim Netzley's line, (406) 880-5832, and the Building Department webpage's own posted inspection-scheduling line, (406) 552-3238. Call (406) 552-3238 (the number the Building Department's own webpage publishes for scheduling) if the application's printed number does not connect.
  • Electrical, plumbing, and mechanical work each require their own separate permit; the Electrical Permit Application specifically asks commercial projects to include grounding detail, panel/feeder schedule(s), load calculations, and equipment specifications.

Frequently asked questions

Hamilton requires a commercial building permit (new construction / addition / remodel / tenant improvement) for: New construction, addition, remodel, re-side, re-roof, repair, or change of use of a commercial/industrial structure — checked as 'Proposed Work' on the Commercial Building Permit Application; Complete, signed permit application including legal description, owner, and contractor information; Complete, signed site plan checklist; Two copies of complete construction plan sets plus one digital (PDF) copy; Energy compliance calculations (ComCheck, energycodes.gov/comcheck); Plan sets must be complete at submittal — the City does not accept deferred submittals; Plan set must include: general information/cover sheet, site plan (utilities, water & sewer service, grading, drainage, site improvements), architectural plans, structural plans, energy calcs, electrical plan with load calculations, plumbing plan, and mechanical plan; A Montana Professional Engineer or Montana registered Architect stamped set of plans is required for new commercial buildings and additions, projects with structural alterations, interior alterations with an occupancy change, Group A/E/F/H/I/R-1/R-2/R-4 occupancies, mixed-occupancy projects other than R-3 and U, and several other listed triggers; Fire sprinkler/fire alarm layouts and specs are included in the plan set 'if applicable,' and the Plot Plan/Site Accessibility Plan must show fire riser room, hydrant locations, and water main size; Submittals routed to Planning, Zoning, Public Works, and the Building Official for approval; Detached structures require separate permits; electrical, plumbing, and mechanical work each require their own separate permit. If your project isn't listed, confirm with City of Hamilton Building Department at (406) 363-3316 before starting work.

The Commercial Building Permit Application states that complete submittals routed to Planning, Zoning, Public Works, and the Building Official 'could take up to 10 days'; if more information is requested, the 10-day period restarts from the date of resubmittal.

You'll need: Commercial Building Permit Application; Site Plan Checklist; Construction Drawings; ComCheck Energy Compliance Report. Depending on your project, Hamilton may also ask for: Fire Sprinkler/Fire Alarm Layouts and Specs. See the required-documents checklist on this page for details on each.

Hamilton requires 3 inspection(s) for a commercial building permit (new construction / addition / remodel / tenant improvement), in order: Foundation/Footing, Framing, Final. Schedule each through City of Hamilton Building Department ((406) 363-3316).

Apply through City of Hamilton Building Department at 920 New York Ave, Hamilton, MT 59840. Phone: (406) 363-3316, email: dpwsec@cityofhamilton.net. Office hours: City Hall: 223 S. 2nd Street, Hamilton, MT 59840, main line (406) 363-2101. Building Department / Public Works office: 920 New York Ave, (406) 363-3316 or (406) 363-6717. Building Inspector Tim Netzley: (406) 880-5832, inspector@constructmt.com. Inspection scheduling line: (406) 552-3238. Inspections scheduled Monday & Wednesday 1pm-4pm and Fridays 8am-12pm per the Roof Permit Application; 24 hours' notice required for plumbing inspections per the Plumbing Permit Application.. Official information: https://www.cityofhamilton.net/departments/building_department/index.php.

The 2021 International Building Code, per the code list printed on the City's own Commercial Building Permit Application ('All construction shall comply with the minimum requirements of the following codes'), alongside the 2021 IRC, IEBC, IMC, IFGC, IECC, ISPSC, 2021 UPC, 2020 NEC, and 2017 ICC A117.1. Montana's building code is adopted at the state level under ARM Title 24, Chapter 301, and Hamilton is the certified local program administering it within city limits (Montana DLI Building Codes Bureau, Certified City, County and Town Programs roster, updated 07/30/2026: 'Hamilton — B, P, M, E, SP — Tim Netzley — 880-5832 — City Limits'). No specific Hamilton Municipal Code section number for the local code-adoption ordinance itself (as distinct from Section 15.08.080's double-fee provision) was found published online.

The City publishes no valuation-based Building Division fee table for commercial construction — the Commercial Building Permit Application itself has no fee fields, and the 2021 Planning & Public Works Fee Schedule covers only Planning/Public Works items. The one commercial-specific fee that is published is a Planning/Engineering 'Commercial Site Plan Review' fee of $150 for the first 3 hours plus $40 per additional hour. Contact the Building Department at (406) 363-3316 for a project-specific quote on the building permit fee itself.

No standalone fire-department or State Fire Marshal review step is published. Fire sprinkler/fire alarm layouts and specs are submitted as part of the Commercial Building Permit's own document set, and the permit's office-use section tracks whether the building is sprinklered. See Hamilton's Fire Sprinkler / Fire Alarm Permit entry.

Sources & verification

Verified against official sources. Last reviewed 2026-08-26.

Fee schedules

Applications & forms

Department & other records

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 Hamilton building department before you submit. PermitBase is an independent reference and is not affiliated with any government agency.

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Other permits in Hamilton

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Commercial Building Permit (New Construction / Addition / Remodel / Tenant Improvement) in other cities

Anaconda-Deer Lodge, MontanaBelgrade, MontanaBillings, MontanaBozeman, MontanaChoteau, MontanaCity of Deer Lodge, MontanaColumbia Falls, MontanaConrad, Montana

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