Montana exempts owners who work on their own property from contractor registration, with a catch for anyone who builds to sell and a separate permit step for electrical work.
Montana does not hand out a general contractor exam to a homeowner, and it does not ask an owner to register just to work on his own land. What it does is regulate people who work on structures for other parties, and then carve out several groups, owners among them. The carve out has a catch for anyone who builds to sell, and the electrical rules add a permit step that many owners miss.
At a glance
- A contractor who bids on or takes on construction work for another party in an independent business must register with the Department of Labor and Industry (Mont. Code 37-45-102).
- An owner working on his own property is exempt, but not an owner who builds an improvement to promptly sell unless he lived there as a primary residence for the last 12 months (37-45-104).
- Work that is casual, minor or inconsequential and priced under $2,500 for the whole job is exempt, unless it is part of a larger operation or split to dodge the law.
- A homeowner may wire his own home, garage and premises on a state homeowner electrical permit.
- Registration costs $70, and working without a required registration can bring a fine of up to $500 per violation.
For the statewide picture, start with our Montana contractor license guide. This page covers the owner side only. Facts below come from the Montana Code Annotated and the Department of Labor and Industry, read on November 2, 2026.
Who Montana treats as a construction contractor
Montana defines a construction contractor as a person, firm or corporation that bids on, offers or takes on work to build, alter, move or demolish a structure or improvement attached to real estate for another party, in the pursuit of an independent business. A second branch of the definition reaches a person who employs workers from more than one trade on a single job or building permit to do similar work on its own property. Both branches are subject to the exemptions in section 37-45-104.
The Department's registration page says contractors with employees must register, pay a $70 non refundable fee and carry workers' compensation for those employees. It also says that working without a required registration, working with a suspended one or transferring a registration to another person can draw a fine of up to $500 per violation.
One housekeeping note: the contractor registration law used to sit in Title 39, chapter 9, and has been renumbered into Title 37, chapter 45. The Department's page still cites the older number, so search both when you look something up.
The owner exemptions in 37-45-104
The exemptions list is long, and it covers government workers, farmers, utilities and more. These are the three that matter to a property owner.
| Situation | Exempt? | The catch |
|---|---|---|
| Owner works on his own property | Yes | Not if he is otherwise covered and builds an improvement to promptly sell, unless he lived there as his primary residence for at least the last 12 months |
| Owner hires a registered construction contractor | Yes | Not if he builds a residence on his property intending to promptly sell it |
| Casual, minor or inconsequential project | Yes | Total contract price must be under $2,500 per job, counting labor, materials and all other items |
The owner on his own property clause does not say the owner must live there. The 12 month occupancy test only matters when the owner is building to sell. That makes the flip the pressure point: build a house for resale, never live in it, and the owner exemption does not cover you.
How the $2,500 line works
The small job exemption is about the whole project, not each invoice. The total of labor, materials and every other item has to stay under $2,500. The statute also says the exemption does not apply if the work is only part of a larger or major operation, or if the work is divided into contracts under $2,500 each to avoid the chapter.
In practice a deck repair at $2,400 can fit, while a kitchen remodel carved into six pieces of $2,000 does not. If you are splitting a project to stay under a number, you are in the zone the statute was written to close.
Electrical work is its own rule
Montana licenses electricians under a separate law. Section 37-68-103 exempts an individual doing electrical work on his own property or residence, if it is maintained for his own use, with one stated exception: work on a grid tied generator at the property is not covered.
The licensing exemption is not the whole story. The Department's electrical permit page says a homeowner may wire his own home, garage and premises using a state homeowner electrical permit. Every other electrical project needs a permit pulled by a Montana licensed electrical contractor and work by a licensed electrician.
- Apply for the homeowner electrical permit and pay the fee shown on the application.
- Build to the National Electrical Code.
- Call for the rough in inspection, giving at least 48 hours' notice before you cover any work.
- Call for the final inspection.
- Check whether your city or county is a certified local government that runs its own electrical program, since a local permit may apply instead.
Our Montana electrician license guide covers the license ladder if you want to do this work for others. The plumbing and HVAC trades follow their own rules, which you can read in our Montana plumbing license and Montana HVAC license guides.
Quick checks before you start
Run through these before you break ground, since each one has tripped up owners who assumed the exemption covered more than it does.
- Confirm the property is yours and the project is for your own use, not for resale within the year.
- Add up labor, materials and everything else, and compare the total with the $2,500 small job line.
- Decide who does the electrical work and pull the state homeowner electrical permit if it is you.
- Ask your city or county building office whether it adds a local permit or its own inspection rules.
- If you plan to hire workers, confirm your workers' compensation and payroll duties before day one.
What the exemption does not cover
The owner exemption is personal. It does not let you build for buyers, take on a neighbor's project for pay, or run a business that works on other people's property. It also does not erase the duties of an employer: if you hire workers, workers' compensation and payroll rules can still apply to you.
When the owner path ends
Owners who start with one house often end up building for a living. Once you are bidding on work for others, you are a contractor under the definition above, and your business needs the registration, the coverage and, in the trades, the right licenses.
Many other states go further and license the company through a qualifying individual, a licensed person who qualifies the business. If you are growing into those states, a full time W-2 qualifying agent is the structure those laws expect. Hire a qualifying agent or see the consultation options, and read what a qualifying agent is first if the term is new. Marshall Schofield and Jeremiah Jaskulski built The Licensing Company around that W-2 model.
Frequently asked questions
Do I need a license to build my own house in Montana?
Section 37-45-104 exempts an owner working on his own property from contractor registration. If you build to promptly sell, the exemption holds only if you have lived there as your primary residence for the last 12 months. Electrical work needs the state homeowner permit, and trades are licensed separately.
Can I do my own electrical work?
Yes on your own home, garage and premises, using a state homeowner electrical permit and the required inspections. Section 37-68-103 exempts the owner from an electrician license, but it excludes work on a grid tied generator.
What is the dollar limit for small jobs?
Casual, minor or inconsequential work is exempt when the total contract price is under $2,500 per job, including labor and materials. Splitting a larger project into smaller contracts to avoid the law defeats the exemption.
How much does contractor registration cost?
The Department lists a $70 non refundable registration fee. Fees are set by the board or testing vendor and can change. Verify the current amount with the provider before you pay.
What happens if I work without a required registration?
The Department says a fine of up to $500 per violation can apply for working without a required registration, working with a suspended one or transferring a registration.
Sources
- Mont. Code 37-45-102, definitions, read 2026-11-02
- Mont. Code 37-45-104, exemptions, read 2026-11-02
- Mont. Code 37-68-103, electrician exemptions, read 2026-11-02
- Montana Department of Labor and Industry, construction contractor registration, read 2026-11-02
- Montana Department of Labor and Industry, electrical permits, read 2026-11-02
Requirements and fees are set by Montana and can change. Verify current rules with the Department of Labor and Industry before you build. This article is general information, not legal advice.
Disclaimer: This article is provided for educational and informational purposes only. It does not constitute legal advice, licensing guidance, or an offer of services. Licensing requirements vary by jurisdiction. For specific compliance questions, contact The Licensing Company for a confidential consultation.