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Plumber licensing in North Dakota

Licensed by the state

North Dakota licenses this trade. You need your own North Dakota license before you work here — or one from a state North Dakota accepts.

✓ Verified 22 July 2026 · North Dakota State Plumbing Board · board verified

North Dakota accepts licenses fromMinnesota · Montana · South Dakota

North Dakota licenses are accepted inMinnesota · Montana · New Hampshire

Apply to reciprocate into North Dakota →

Terms differ — some routes are application-only, others need years of practice. Open “Bringing your license from another state” below for the conditions, and confirm with the board before you travel.

Starting as an apprentice

North Dakota issues an apprentice credential

What it is called
Apprentice Plumber registration
Who issues it
North Dakota State Plumbing Board
Cost
$20 first year, $30 second, $40 third, $50 fourth ($75 fifth)
Renewal
annually; expires 31 December

File your North Dakota apprentice application →

Register within 30 days of starting - hours worked unregistered do not count and put you in violation. The board may credit prior experience and trade school, which can land a traveler in the fourth year, where apprentices work unsupervised.

Bringing your license from another state

North Dakota names three reciprocal states — Minnesota, Montana, and South Dakota — with the terms set per partner. A South Dakota journeyman transfers if you are still a South Dakota resident; South Dakota's contractor class maps to the North Dakota master. A Minnesota journeyman needs the license held a year and Minnesota residency; a Minnesota master needs the year but no residency.

Montana is level-capped: journeyman or master, you receive a North Dakota journeyman only. Every route wants a Certificate of Endorsement from your home board — a copy of your license is not accepted. Fees run $150 journeyman, $250 master, all-in. From a fourth state you are not walled out: two discretionary statutes let the board license without examination — one requires your state to reciprocate back, the other (two years' practice) does not — neither is advertised, so ask for them by statute number:

43-18-13.1 and 43-51-06.

Can you work while it is pending?

North Dakota has more interim machinery than it advertises. The best short-assignment tool anywhere in this packet: on prior written application, an out-of-state plumber may work up to thirty days per year on the home-state license — about $25, and the clock starts when the board approves. A statutory temporary permit (good to December 31) also exists but has no published form; ask for it by number, 43-18-15.

The route that works Monday: start work and register as an apprentice within thirty days — the board may credit your experience into the fourth or fifth year, where apprentices work unsupervised. Military members and spouses do best of all: the board must issue a provisional license, free, and if it sits on a complete application past thirty days the license issues automatically.

The exam and the hours

The journeyman path is four years and 7,600 apprentice hours under a licensed master, with a 70% pass; the master path is age twenty-one plus two years and 3,400 hours as a licensed journeyman at 80% — and out-of-state journeyman years count, the rule says so in terms. Coming from a place with no license law, the screening-test route takes five years' experience and four affidavits, then an oral-and-written screening plus an inspection report on an installation of your own before you sit the exam.

Exams are $50, and the board administers them itself, at its own times and places — no PSI, no Pearson.

How apprenticing works here

Register with the board within thirty days of starting — hours worked past that date unregistered do not count and put you in violation. The term is four years at 1,900 hours a year, but the board may credit prior experience and trade school (an A average earns double credit per course hour). Years one through three require the immediate presence of a master or journeyman; fourth- and fifth-year apprentices work unsupervised.

The cap is five apprentices per supervisor, and enforcing it is the employer's duty.

The local picture

The state license is not always the last word — North Dakota expressly lets cities require a municipal license on top. Fargo licenses at the master level only, so a traveling journeyman needs nothing from the city, though his employer does. Grand Forks shows strong signs of a per-worker city journeyman card — check with the city building department before taking work there.

If you want to contract for yourself

Three regimes, none interchangeable. Your worker license from the Plumbing Board is the personal requirement. The master-in-charge rule is the firm's: a plumbing business in any water-and-sewer locality must keep a licensed master in charge (in towns under a thousand people and in rural areas, a journeyman will do). And jobs over $4,000 require the employer to hold a Secretary of State contractor license, classed by contract value.

An employee on a licensed contractor's payroll needs only the worker credential.

Verified July 22, 2026 · source confidence: board-verified
Checked against the state board or statute. Rules change — confirm with the board before you travel or accept work. This is information, not legal advice.