Do I Need a Permit for a Commercial Tenant Improvement in Montana?
Commercial tenant improvement permit requirements. When a TI needs a permit, the permit stack, stamped drawings, contractor licensing, and change-of-occupancy triggers.
Almost always yes — a commercial tenant improvement needs a building permit, usually with electrical, mechanical, and fire permits alongside it.
Montana-specific rules
Montana's construction contractor registration is administered by the Department of Labor & Industry and is anchored to the Workers' Compensation Act rather than to trade competence. All INCORPORATED construction contractors, and any construction contractor WITH EMPLOYEES, must register with the Construction Contractor Registration Unit and show a valid Montana workers' compensation policy before registration is approved. Independent contractors in construction who have no employees are exempt from registering, though they may register voluntarily — so on a tenant improvement, absence of a registration number does not by itself mean a contractor is operating unlawfully.
Sources: Montana DLI — Construction Contractor Registration, Montana DLI — Montana Contractor
When a Tenant Improvement Needs a Permit
Nearly any commercial tenant improvement that moves a wall, changes the electrical or mechanical layout, or alters exits needs a building permit. Cosmetic work — paint, carpet, and like-for-like fixture swaps — usually does not. The line is structural and life-safety impact, not cost: relocating a single non-bearing partition can trigger a permit while a far more expensive finish package does not. Because a tenant improvement is commercial rather than residential, plan review is typically more involved and the accessibility and fire provisions apply in full.
The Permit Stack
A tenant improvement rarely means one permit. The building permit is the parent, and electrical, mechanical, and plumbing permits are usually pulled alongside it by the respective subcontractors. Fire sprinkler and fire alarm work commonly needs separate review, sometimes by a fire district rather than the building department. Expect each trade permit to carry its own inspections, and expect the certificate of occupancy or completion to depend on all of them passing — one open trade permit can hold up the whole space.
Stamped Drawings and Who Prepares Them
Most jurisdictions require plans prepared by a licensed architect or engineer for commercial work, with the threshold set by floor area, occupant load, or the nature of the change rather than by a single national rule. Structural modifications almost always need an engineer stamp. Energy compliance documentation for the mechanical and lighting scope is commonly required as well. Confirm the stamping threshold with the building department before you commission drawings, because redrawing a set to add a stamp is slower and more expensive than commissioning it stamped.
Contractor Licensing Is a State Question
Who may legally perform a tenant improvement is decided at the state level, and the rules differ more than most people expect. Some states license contractors centrally and separate commercial from residential qualification; some register contractors instead, tied to workers compensation rather than a trade exam; and some leave general contracting to city or county licensing while still licensing the electrical and mechanical trades at state level. The consequences of getting it wrong range from a failed inspection to a contractor losing the right to lien the property. Check the requirement for your state before signing, not after.
Assume a commercial tenant improvement needs a building permit plus trade permits, and budget for plan review. Confirm three things early: whether your drawings need an architect or engineer stamp, whether the work changes the building's occupancy classification, and how your state licenses or registers the contractor doing the work.
Permit fees by city in Montana
Verified from each city’s published fee schedule. Where a city has no separate fee listed for this project, open the city page for the current requirements and amount.
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| Permit fee | Source | |
|---|---|---|
| Anaconda-Deer Lodge | $23.50Verifiedvia Commercial Building Permit (New Construction, Additions, Alterations, Change of Occupancy) | Commercial Building Permit (New Construction, Additions, Alterations, Change of Occupancy) → |
| Belgrade | Valuation x 0.0036Verifiedvia Commercial Building Permit (New Construction, Additions & Alterations) | Commercial Building Permit (New Construction, Additions & Alterations) → |
| Billings | $30.00 minimum ($1-$1,000 valuation), scaling up per the Residential and Commercial Building Permit Fees table -- see the Residential Building Permit entry in this jurisdiction's permit list for the tiers through $1,000,000Verifiedvia Commercial Building Permit (New Construction, Additions & Remodels) | Commercial Building Permit (New Construction, Additions & Remodels) → |
| Bozeman | (Gross Area x (Square Foot Construction Cost, Table A x Cost Modifier %, Table B)) x .0084 (Bozeman's Budget & Prior Year's Valuation-based Multiplier)Verifiedvia Commercial Building Permit (New Construction, Addition, Tenant Improvement) | Commercial Building Permit (New Construction, Addition, Tenant Improvement) → |
| Choteau | See city page for the current Commercial Building Permit (New Construction, Additions, Alterations) fee | Commercial Building Permit (New Construction, Additions, Alterations) → |
| City of Deer Lodge | Calculated by the Bureau under International Building Code Section 109.2, Schedule of Permit Fees, as modified by Administrative Rules of Montana 24.301.138; the Bureau's own guidance describes the resulting fee as generally 1% to 2% of the building valuationVerifiedvia Commercial Building Permit (State-Issued) | Commercial Building Permit (State-Issued) → |
| Columbia Falls | $23.50Verifiedvia Commercial Building Permit (New Construction / Addition / Remodel / Repair) | Commercial Building Permit (New Construction / Addition / Remodel / Repair) → |
| Conrad | See city page for the current Zoning and Building Permit (Commercial New Construction / Addition / Alteration / Repair) fee | Zoning and Building Permit (Commercial New Construction / Addition / Alteration / Repair) → |
| Cut Bank | $23.50 (subject to the $100.00 minimum permit fee)Verifiedvia Commercial Building Permit (New Construction / Addition / Alteration / Tenant Improvement) | Commercial Building Permit (New Construction / Addition / Alteration / Tenant Improvement) → |
| Darby | $29.38Verifiedvia Commercial Building Permit (New Construction, Addition, Alteration, Repair) | Commercial Building Permit (New Construction, Addition, Alteration, Repair) → |
| East Helena | See city page for the current Construction Permit — Commercial Building (New Construction / Addition / Remodel / Tenant Improvement) fee | Construction Permit — Commercial Building (New Construction / Addition / Remodel / Tenant Improvement) → |
| Glasgow | See city page for the current Commercial Building Permit (New Construction / Addition / Alteration / Remodel) fee | Commercial Building Permit (New Construction / Addition / Alteration / Remodel) → |
| Great Falls | Ranges from $67.62 (value $1-$1,000) up to $767.29 (value $49,001-$50,000), per the $1,000-increment tableVerifiedvia Commercial Building Permit (New Construction, Additions & Tenant Improvements) | Commercial Building Permit (New Construction, Additions & Tenant Improvements) → |
| Hamilton | See city page for the current Commercial Building Permit (New Construction / Addition / Remodel / Tenant Improvement) fee | Commercial Building Permit (New Construction / Addition / Remodel / Tenant Improvement) → |
| Havre | $23.50Verifiedvia Commercial Building Permit (New Construction, Additions, Remodels & Tenant Improvements) | Commercial Building Permit (New Construction, Additions, Remodels & Tenant Improvements) → |
| Helena | Per Ordinance 3134 Appendix A Building Permit Fee Tabulation -- $22.00 for $0-$500 valuation, ranging up to $4,955.00 for the first $1,000,000 plus $2.75 for each additional $1,000 or fraction thereof; no separate, higher commercial-only tier is publishedVerifiedvia Commercial Building Permit (New Construction, Additions, Remodels, Tenant Improvements, Multi-Family 3+ Units) | Commercial Building Permit (New Construction, Additions, Remodels, Tenant Improvements, Multi-Family 3+ Units) → |
| Kalispell | $23.50Verifiedvia Commercial Building Permit (New Construction, Additions, Remodels, Tenant Improvements) | Commercial Building Permit (New Construction, Additions, Remodels, Tenant Improvements) → |
| Laurel | See city page for the current Commercial Building Permit (New Construction, Additions, Alterations) fee | Commercial Building Permit (New Construction, Additions, Alterations) → |
| Lewistown | See city page for the current Commercial Building Permit (New Structures, Additions, Structural Modifications) fee | Commercial Building Permit (New Structures, Additions, Structural Modifications) → |
| Livingston | See city page for the current Commercial Building Permit (New Construction, Additions, Alterations) fee | Commercial Building Permit (New Construction, Additions, Alterations) → |
| Manhattan | See city page for the current Commercial Building Permit (New Construction, Addition, Remodel, Tenant Improvement) fee | Commercial Building Permit (New Construction, Addition, Remodel, Tenant Improvement) → |
| Miles City | See city page for the current Commercial Building Permit (State-Administered) fee | Commercial Building Permit (State-Administered) → |
| Missoula | $36 permit fee + $11.00 plan review feeVerifiedvia Commercial Building Permit (New Construction, Additions, Alterations) | Commercial Building Permit (New Construction, Additions, Alterations) → |
| Missoula County (Unincorporated) | $26.00Verifiedvia Commercial Building Permit | Commercial Building Permit → |
| Polson | 35% of the Building Permit FeeVerifiedvia Zoning Conformance & Building Permit (Commercial New Construction, Additions, Remodels, Tenant Improvements) | Zoning Conformance & Building Permit (Commercial New Construction, Additions, Remodels, Tenant Improvements) → |
| Red Lodge | See city page for the current Commercial Building Permit (New Construction / Addition / Alteration / Tenant Improvement) fee | Commercial Building Permit (New Construction / Addition / Alteration / Tenant Improvement) → |
| Richland County (Unincorporated Areas and Towns, excluding Sidney) | $23.50Verifiedvia Commercial Building Permit (New Construction / Addition / Alteration / Remodel / Tenant Improvement) | Commercial Building Permit (New Construction / Addition / Alteration / Remodel / Tenant Improvement) → |
| Ronan | $35.00 for up to $1,999Verifiedvia Commercial Building Permit (New Construction / Addition / Alteration / Repair) | Commercial Building Permit (New Construction / Addition / Alteration / Repair) → |
| Shelby | $23.50Verifiedvia Commercial Building Permit (New Construction / Addition / Alteration / Tenant Improvement) | Commercial Building Permit (New Construction / Addition / Alteration / Tenant Improvement) → |
| Sidney | $23.50 minimum up to $5,608.75 for the first $1,000,000 plus $3 per additional $1,000 over $1,000,000Verifiedvia Commercial Building Permit | Commercial Building Permit → |
| Stevensville | $35 (minimum fee)Verifiedvia Commercial Building Permit (New Construction, Additions, Remodels, Tenant Improvements) | Commercial Building Permit (New Construction, Additions, Remodels, Tenant Improvements) → |
| Townsend | See city page for the current Building Permit — Commercial Building (New Construction / Addition / Remodel / Tenant Improvement) fee | Building Permit — Commercial Building (New Construction / Addition / Remodel / Tenant Improvement) → |
| Unincorporated Yellowstone County | $23.50Verifiedvia Commercial Building Permit | Commercial Building Permit → |
| Whitefish | Based on a percentage of the estimated project cost (valuation-based); a deposit is required at time of permit submittalVerifiedvia Commercial Building Permit (New Construction / Addition / Remodel) | Commercial Building Permit (New Construction / Addition / Remodel) → |