New Hampshire Contractor License: Complete 2026 OPLC Guide

What is a New Hampshire contractor license and who needs one?

A New Hampshire contractor license, in the statewide sense most contractors expect, does not exist. The state issues no general contractor or home improvement license, so there is no state credential, exam, bond, or fee standing between you and residential or light commercial construction work. Instead, New Hampshire licenses specific trades through the Office of Professional Licensure and Certification (OPLC) at oplc.nh.gov. Electricians hold master, journeyman, or apprentice licenses through the Electricians’ Board under RSA 319-C, while plumbers and fuel gas fitters license through the Mechanical Licensing Board under RSA 153, and a handful of specialty boards cover home inspectors, septic system evaluators, and manufactured housing installers. General carpentry, framing, roofing, siding, painting, and remodeling carry no state license at all. Because there is no board fee to work as a general contractor, your real requirements are a registered business, workers’ compensation coverage for any employees under RSA 281-A, the insurance your clients demand, and a local building permit pulled under the New Hampshire State Building Code. Trade licenses that do exist carry their own OPLC fees set by board rule and renew on a two-year cycle under RSA 310:8. Working in a licensed trade without the credential exposes you to an OPLC fine of up to $10,000 per offense under RSA 310:13, on top of the unfair and deceptive practice liability every contractor owes homeowners under New Hampshire’s Consumer Protection Act, RSA 358-A.

The trades New Hampshire licenses

New Hampshire does not license general contractors, but it is not a free for all either. The state draws a clear line: the trades where a mistake can burn a house down or poison a water line are licensed, and everything else is left to the market and to local building departments. Knowing which side of that line your work falls on is the whole game.

The licensing happens through the Office of Professional Licensure and Certification, the umbrella agency created under RSA 310 that houses more than fifty boards, councils, and commissions. Look through that directory and you will not find a general contractor board, a home improvement board, or a residential contractor board. What you will find are the trade boards below.

Electricians

Electrical work is the most tightly licensed trade in the state. Under RSA 319-C, no one may make electrical installations for hire without a license from the Electricians’ Board, which sits inside OPLC. The board licenses master electricians, who run the business and take responsibility for the work, journeyman electricians, who perform the work under a master, and apprentice electricians, who train under supervision. A journeyman must be employed by a New Hampshire licensed master electrician or a licensed electrical entity, and the statute even caps how many apprentices a master may supervise on a single work site. Corporations and partnerships can hold an electrical license as long as an officer or member in charge of the electrical business is a licensed master electrician.

Plumbers and fuel gas fitters

Plumbing and gas work both run through the Mechanical Licensing Board under RSA 153. The old standalone plumbers chapter, RSA 329-A, was repealed in 2013 and folded into this board, so anyone still searching for a New Hampshire plumbers board under the old citation is looking at a dead statute. The board licenses master plumbers, journeyman plumbers, and apprentice plumbers, and separately licenses fuel gas fitters across several classes: fuel gas installation technicians, fuel gas service technicians, fuel gas piping installers, domestic appliance technicians, and fuel gas trainees. If your work touches water supply, drainage, or natural gas and propane piping, you are in this board’s jurisdiction.

The specialty boards

A few other construction adjacent trades carry state credentials. Home inspectors license through the Board of Home Inspectors under RSA 310-A:186. Septic system evaluators license through their own board under RSA 310-A:206. Manufactured housing installers license through the Installation Standards Board for Manufactured Housing under RSA 205-D. Design professionals, meaning architects, professional engineers, land surveyors, and landscape architects, each license through their own OPLC boards as well. None of these is a general contractor license, and none of them is required to swing a hammer on a standard remodel.

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What a New Hampshire contractor actually needs

The absence of a license is not the absence of rules. A general contractor in New Hampshire still has to be a real, registered, insured business to work legally and to win work from anyone who checks. Because no board hands you a credential to point to, these requirements are the substitute proof that you are legitimate.

A registered business

Form your company, whether a limited liability company or a corporation, through the New Hampshire Secretary of State, and get a federal employer identification number from the IRS. This is the paperwork that turns you from an individual into a business that can hold insurance, hire employees, sign contracts, and open accounts with suppliers. Your business name, your insurance, and your tax filings should all match this entity.

Insurance the market requires

The state does not require a general contractor to carry a bond or a specific insurance policy, but the jobs do. General liability insurance is the coverage general contractors, property owners, and lenders expect before they let you on site, and if you have employees you are legally required to carry workers’ compensation. Treat these as non-negotiable even though no board is checking, because a single uninsured claim can end a small shop.

Local permits and code compliance

Most construction work requires a building permit from the town or city where the job sits, and the work is inspected against the New Hampshire State Building Code. There is no statewide contractor license to wave at the building inspector, so your permit history and your inspections are how the local jurisdiction confirms your work is up to code.

How to set up as a New Hampshire contractor: the 8-step process

There is no application to a contractor board here, so the process is really about standing up a legitimate business and pulling the right trade license only if your work demands it. Work these steps in order and you will be legal, insured, and ready to bid.

1. Confirm no state license applies to your trade

   Decide whether your work is licensed. General construction, carpentry, framing, roofing, and remodeling are not. Electrical, plumbing, and fuel gas fitting are. Check the OPLC board directory before you assume either way.

2. Register your business and get an EIN

   Form your LLC or corporation with the New Hampshire Secretary of State and apply for a federal employer identification number from the IRS so your company can hold insurance, hire, and sign contracts under one name.

3. Set up your state tax accounts

   Register with the New Hampshire Department of Revenue Administration for the Business Profits Tax and Business Enterprise Tax that apply once your gross receipts or enterprise value cross the state thresholds.

4. Line up insurance and workers’ comp

   Buy general liability insurance because your clients and the jobs will require it, and secure workers’ compensation coverage if you have any employees, which RSA 281-A requires of New Hampshire employers.

5. Pull the OPLC trade license if you need one

   If you do electrical, plumbing, or fuel gas work, apply to the matching OPLC board for the correct license level. If you only do general construction, skip this step entirely.

6. Check local registration where you work

   Some New Hampshire towns and cities ask contractors to register locally before pulling permits. Call the building department in each jurisdiction where you plan to work and confirm what they require.

7. Pull the building permit

   Apply for the building permit from the local building department before you start most jobs. The work is inspected against the New Hampshire State Building Code, so the permit and inspection sign-offs stand in for a license.

8. Put the job in a written contract

   Sign a written contract for every job that spells out scope, price, and payment. Without a licensing board, a clear contract is your best protection and the homeowner’s, and price it right before you commit.

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Exams: which trades test and which do not

Because there is no general contractor license, there is no general contractor exam in New Hampshire. You do not sit a business and law test, a trade test, or any state exam to work as a general contractor, a remodeler, or a home builder. That is the single biggest difference between New Hampshire and neighboring states like Massachusetts, where a Construction Supervisor License requires passing an exam, or Connecticut, where home improvement contractors must register with the state before they can legally take the work.

The licensed trades are a different story. Electricians must qualify through the Electricians’ Board, and plumbers and fuel gas fitters must qualify through the Mechanical Licensing Board, which sets the nature of the examinations required for plumber and fuel gas fitter licenses through its rules. So the honest answer on exams is: none for general contracting, but a real competency process for the trades the state does license. If your business plan includes wiring, piping, or gas, budget the time to earn and hold those credentials.

Insurance, bonds, and workers’ compensation

New Hampshire does not require a general contractor to post a surety bond or carry a state-mandated insurance policy. There is no state bond because there is no state license to bond against. That freedom is real, but it does not mean you should work bare.

General liability insurance is the coverage that keeps a single accident from becoming a business ending event, and most general contractors, property owners, and lenders will not sign with you without proof of it. Workers’ compensation is not optional if you have employees: under RSA 281-A, New Hampshire employers must secure compensation coverage for their workers. Line up both before you take on crews or subcontractors, because the market treats them as the price of admission even though no board does.

Setting up your contracting business

Without a board to satisfy, the smoothest path to working legally is a clean business setup. Get the entity, the federal number, and the state tax accounts sorted first, then insurance and permits fall into place around them.

Register the entity and get an EIN

Form your company through the New Hampshire Secretary of State and apply for a federal employer identification number from the IRS. The name on your insurance, your contracts, and your tax filings should all match this entity, so settle the structure before you print business cards.

Register for New Hampshire taxes

New Hampshire has no general sales tax and no personal income tax on wages, but it does tax business activity. The Business Profits Tax and the Business Enterprise Tax, both administered by the New Hampshire Department of Revenue Administration, apply once your gross business income or your enterprise value tax base crosses the state filing thresholds. Set up these accounts early so your first profitable year does not catch you off guard, and confirm the current thresholds and rates with the Department of Revenue Administration, since the legislature adjusts them.

Handle out-of-state and local pieces

If you are an out-of-state contractor expanding into New Hampshire, the good news is that there is no state contractor license to transfer or re-earn. Register your business to do business in New Hampshire, carry the insurance and workers’ compensation the jobs and the law require, and pull local permits like any resident contractor. If your trade is licensed, contact the relevant OPLC board about reciprocity, which RSA 310:17 provides for, before you assume your out-of-state trade license carries over.

Renewing a New Hampshire trade license

General contractors have nothing to renew, because there is no license to hold. If you carry an OPLC trade license as an electrician, plumber, or fuel gas fitter, renewal runs through the office under RSA 310:8. You submit your renewal application, the renewal fee, and any required supporting documents on or before the license expiration date.

Miss that date and the license expires, and you are not authorized to practice the licensed trade until it is reinstated. Let it sit expired for a full year and it lapses entirely, at which point you can no longer reinstate it and must apply for a brand new license. Under RSA 310:8 an OPLC license runs two years from issuance, one year for an apprentice, and each board sets its own fee schedule by rule, so confirm your exact fees with the board that issued your credential and calendar the expiration date the day your license is issued.

Enforcement and consumer protection

A state without a contractor license is not a state without accountability. New Hampshire protects homeowners through two levers instead of a licensing board, and both have teeth.

The first is OPLC enforcement of the licensed trades. Under RSA 310:13, anyone who performs work that requires a professional license without holding that license is engaged in unlawful practice, and the office may impose a fine that is the greater of the economic benefit the person gained from the violation or up to $10,000 for each offense, with each violation counted separately. The attorney general or a local prosecutor can also seek an injunction to shut the unlicensed work down. That is the risk an unlicensed electrician or plumber runs.

The second lever covers every contractor, licensed or not. New Hampshire’s Consumer Protection Act, RSA 358-A, makes it unlawful to use any unfair or deceptive act or practice in trade or commerce. A homeowner who is wronged can sue under RSA 358-A:10 and recover actual damages or $1,000, whichever is greater, and a court that finds a willful or knowing violation must award two to three times that amount, plus the costs of the suit and reasonable attorney’s fees. The attorney general is notified of every such case. So a New Hampshire contractor who cuts corners is not shielded by the lack of a license: the deceptive practice statute reaches them directly.

What a New Hampshire contractor license costs, itemized

Here is the number that surprises people: the state charges a general contractor nothing to get licensed, because there is nothing to license. There is no application fee, no license fee, and no renewal fee for general contracting in New Hampshire. That does not mean setting up is free, it means your money goes to the business, not to a board.

Your real first year costs are business registration with the Secretary of State, general liability insurance premiums, workers’ compensation premiums if you have employees, and local permit fees that each town sets on its own. If your trade is licensed, you also pay the OPLC fees for that credential, which each board sets by rule. We are not quoting those trade license figures here because they are set in board rules rather than a single published fee schedule, and a wrong number is worse than no number. Confirm the current fee with the OPLC board that governs your trade.

Set against the rest of the country, New Hampshire sits in a specific camp. It is one of 15 states with no statewide contractor license at all. Among the 33 states that do license general contractors and publish a computable cost, the median first year cost is about $176, running from roughly $25 in Nebraska at the low end to about $900 in Nevada at the high end. New Hampshire simply is not on that scale, because the state credential does not exist. See how New Hampshire compares in all 50 states in the full breakdown.

Local permits and the New Hampshire building code

The absence of a state license pushes almost all of the real oversight down to the local building department. New Hampshire has adopted a statewide building code under RSA 155-A, but it is enforced town by town, and that is where a contractor actually meets the rules.

The New Hampshire State Building Code adopts a family of International Code Council codes: the 2021 International Building Code, the 2021 International Residential Code, the 2021 International Existing Building Code, the 2021 International Mechanical Code, the 2021 International Plumbing Code, the 2021 International Swimming Pool and Spa Code, and the 2018 International Energy Conservation Code. Under RSA 155-A:7, the local enforcement agency, meaning the building official the municipality appoints, has the authority to enforce that code, and where a town has no local enforcement agency the State Fire Marshal may step in at the municipality’s request.

In practice, this means you check in with each town or city where you build. Some New Hampshire municipalities ask contractors to register locally before issuing permits, and the permit fees, inspection schedules, and any local registration requirements are set by that jurisdiction, not by the state. Because those local rules and fees vary and change, confirm them directly with the building department where the job sits rather than assuming a neighboring town’s process applies.

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Common pitfalls to avoid

The biggest risk in a no-license state is assuming no rules means no exposure. Here is where New Hampshire contractors slip.

• Buying a license that does not exist. If a service offers to sell you a New Hampshire general contractor license, walk away. The state does not issue one, and no third party can either.
• Doing licensed trade work without the license. Wiring, plumbing, and gas fitting are licensed. Doing them without the OPLC credential is unlawful practice under RSA 310:13 and carries a fine of up to $10,000 per offense.
• Working without insurance. No board checks, but one liability claim or one injured uninsured employee can end a small contractor. Carry general liability, and workers’ compensation if you have employees.
• Skipping the local permit. The oversight lives at the town level. Skipping the building permit or the inspections is the fastest way to have a job red-tagged.
• Treating the lack of a license as a lack of accountability. The Consumer Protection Act, RSA 358-A, reaches every contractor. Deceptive or unfair work can cost you two to three times the damages plus the homeowner’s attorney fees.
• Assuming an out-of-state license carries over automatically. Your trade license from another state may need reciprocity review through the relevant OPLC board before you rely on it here.

Bottom line

A New Hampshire contractor license, at the statewide level, is a credential that does not exist. The state licenses no general contractors and no home improvement contractors, so there is no exam, no bond, and no state fee to work in general construction. What New Hampshire does license is the high risk trades: electricians under RSA 319-C and plumbers and fuel gas fitters through the Mechanical Licensing Board, all through OPLC. To work legally as a contractor, register a business, carry the insurance and workers’ compensation your jobs and RSA 281-A require, pull local permits under the state building code, and hold the deceptive-practice line that RSA 358-A enforces. Permits first. Then bid every New Hampshire job with a sharper estimate.