Quick answer: Montana takes a lighter touch than most states. Only plumbers and electricians hold true state competency licenses, issued by boards within the Department of Labor & Industry (DLI) Business Standards Division under Title 37, MCA. Everyone else who does construction, general contractors, roofers, painters, carpenters and landscapers, does not take a state exam; instead, a contractor with employees must hold a Construction Contractor Registration (Title 39, Ch. 9, MCA), while an independent contractor with no employees typically holds an Independent Contractor Exemption Certificate (ICEC). Both are workers'-compensation compliance tools, not skill licenses. HVAC has no statewide license, only registration, and cleaners need nothing at all.
The table below shows which of the common trades need a Montana state license, which only register with the state, and which need nothing.
Which trades need a license in Montana?
| Trade | State license required? | Licensing body |
|---|---|---|
| Plumber | Yes | State license required, Board of Plumbers (DLI Business Standards Division), Title 37, MCA. Journeyman and Master licenses, plus a medical-gas endorsement. |
| Electrician | Yes | State license required, Montana State Electrical Board (DLI Business Standards Division), Title 37, MCA. Residential, Journeyman, Master and Electrical Contractor licenses. |
| HVAC | Registration | No statewide HVAC competency license. HVAC businesses register with DLI (Construction Contractor Registration if they have employees, or an ICEC). Federal EPA Section 608 certification applies to work with refrigerants. |
| General Contractor | Registration | No state competency license. A contractor with employees must hold a Construction Contractor Registration (Title 39, Ch. 9, MCA); an independent contractor with no employees typically holds an ICEC. |
| Roofer | Registration | No state competency license. Same rule as general contractors: Construction Contractor Registration with employees, or an ICEC as an independent contractor. |
| Painter | Registration | No state competency license. If doing construction-industry work, registration (with employees) or an ICEC (no employees) applies; no exam. |
| Carpenter | Registration | No state competency license. Carpentry falls under construction contractor registration rules, Construction Contractor Registration with employees, or an ICEC. |
| Landscaper | Registration | No state contractor license for landscaping or lawn care. Construction-type landscaping work follows the registration/ICEC rules. Pesticide application is separately regulated by the Montana Dept. of Agriculture. |
| Handyman | Registration | No state competency license. Handyman work for hire in construction follows registration/ICEC rules, but a handyman cannot perform licensed plumbing or electrical work. |
| Cleaner | No | No state occupational or contractor license required for residential or commercial cleaning. |
"Yes" means a state competency license from a DLI board is required. "Registration" means no exam, but the business must register with DLI (Construction Contractor Registration or an ICEC) for workers'-compensation purposes. Local business permits may still apply.
How Montana regulates the building trades
Montana regulates construction very differently from license-heavy states. Only two building trades require a state competency license: plumbing and electrical. These are administered by professional boards, the Board of Plumbers and the State Electrical Board, housed in the Business Standards Division of the Montana Department of Labor & Industry (DLI) under Title 37, MCA. To hold one of these licenses you must document experience (or an apprenticeship), pass a board exam, and complete continuing education to renew.
For every other construction trade, Montana does not issue a skill-based license at all. Instead it uses a registration system tied to workers'-compensation compliance, run by the DLI Employment Relations Division under Title 39, Chapter 9, MCA. That is an important distinction: registration confirms a contractor is covering its workers, not that the state has tested their competence.
Registration vs. the Independent Contractor Exemption Certificate (ICEC)
Montana splits non-licensed contractors into two paths. A construction contractor that has employees must obtain a Construction Contractor Registration and carry Montana workers'-compensation insurance. Under § 39-9-201, MCA, each construction contractor shall register with the department; registration runs on a two-year cycle for a modest fee (about $70).
A contractor who works without employees and is independently established in business can instead obtain an Independent Contractor Exemption Certificate (ICEC) under § 39-71-417, MCA. The ICEC lets a sole proprietor or working owner waive the workers'-compensation coverage that would otherwise be required. The application fee is $125, and the certificate is renewed periodically. Neither the registration nor the ICEC involves a trade exam, so neither is a measure of skill.
Plumbers and electricians: the licensed trades
Plumbers are licensed by the Board of Plumbers as Journeyman or Master, with a separate medical-gas endorsement. A journeyman path generally requires roughly five years (about 8,500 hours) of registered on-the-job training or equivalent experience, plus a passing exam; a master license builds on journeyman experience.
Electricians are licensed by the Montana State Electrical Board at the Residential, Journeyman and Master levels, and businesses can hold an Electrical Contractor license. Journeyman applicants typically document a four-year apprenticeship or about 8,000 hours of experience and pass an exam based on the National Electrical Code. Both boards require continuing education to renew. These are the trades where hiring an unlicensed person to do the work is a real legal problem.
HVAC, general contracting and other unlicensed trades
Montana has no statewide HVAC license. An HVAC company operates under the same rules as a general contractor: register with DLI if it has employees, or hold an ICEC if the owner works solo. The one true credential for HVAC is federal, not state, the EPA Section 608 technician certification required to handle refrigerants.
The same registration-only framework covers general contractors, roofers, painters, carpenters, landscapers and handymen. None of these take a Montana competency exam. What they cannot do is cross into a licensed trade: a handyman, carpenter or general contractor may not perform plumbing or electrical work that Montana reserves for a licensed plumber or electrician. Separate programs, such as Department of Agriculture pesticide licensing for some landscaping chemicals, may also apply.
Local permits and what registration does not cover
Even where the state requires only registration, building permits are still required for many projects, and cities or counties may require a local business license. Registration and the ICEC are about workers'-compensation compliance, not building-code enforcement or consumer competency, so a registered contractor is not a state-vetted expert. Because rules and permit thresholds vary by jurisdiction, always confirm requirements with your local building department before starting a job, and verify any plumber or electrician's license on the DLI board lookup.
How to get licensed in Montana
- Decide which category you fall into: a licensed trade (plumbing or electrical), or a construction trade that only registers (general contractor, roofer, painter, carpenter, landscaper, handyman, HVAC).
- If you are a plumber or electrician, document your experience or apprenticeship hours, apply to the Board of Plumbers or State Electrical Board, and pass the required board exam.
- If you run a construction business with employees, obtain a Construction Contractor Registration from DLI (Title 39, Ch. 9, MCA) and carry Montana workers' compensation insurance.
- If you work as an independent contractor with no employees, apply for an Independent Contractor Exemption Certificate (ICEC) under 39-71-417, MCA, with the notarized application, waiver and fee.
- Confirm local requirements, business licenses and building permits with your city or county, and renew any state license, registration or ICEC on its required cycle.
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Frequently asked questions
Does a general contractor need a license in Montana?
No, not a competency license. Montana does not issue a state exam-based license for general contractors. Instead, a general contractor with employees must hold a Construction Contractor Registration (Title 39, Ch. 9, MCA) and carry workers' compensation, while an independent contractor with no employees typically holds an Independent Contractor Exemption Certificate (ICEC). Both are workers'-compensation tools, not skill licenses.
Which trades actually need a state license in Montana?
Only plumbers and electricians. They are licensed by the Board of Plumbers and the Montana State Electrical Board within the Department of Labor & Industry Business Standards Division under Title 37, MCA, and must document experience, pass a board exam and complete continuing education. Other construction trades only register with the state.
Do HVAC contractors need a license in Montana?
There is no statewide HVAC license in Montana. An HVAC business registers with DLI like any construction contractor, a Construction Contractor Registration if it has employees, or an ICEC if the owner works alone. Separately, federal EPA Section 608 certification is required to work with refrigerants.
What is the difference between registration and the ICEC?
A Construction Contractor Registration is for a contractor that has employees and confirms the business carries workers' compensation insurance. An Independent Contractor Exemption Certificate (ICEC) is for an independently established contractor with no employees, and it waives the workers'-compensation coverage that would otherwise apply. Neither requires a trade exam.
Sources: Montana DLI, Employment Relations Division, Montana Contractor, Montana DLI, Independent Contractor Exemption Certificates, Montana Board of Plumbers (DLI Business Standards Division), Montana State Electrical Board (DLI Business Standards Division), MCA 39-9-201, Registration required (construction contractors), 2025. Licensing rules change — always confirm current requirements with the relevant state board and your local city before you work.