The essentials
- Licensing authorityMinnesota Department of Labor and Industry (DLI) — Construction Codes and Licensing Division / Plumbing Board — official site
- Statewide?Yes — Minnesota licenses at the state level
- Experience requiredNot published in a form we could verify — confirm with the board
- ExamState-administered examination through DLI for both journeyworker and master
- Renewal & CEBiennial — licenses expire December 31 of odd-numbered years; 16 hours of DLI-approved continuing education per cycle, at least 8 of which must relate to the Minnesota State Plumbing Code
- Bond / insuranceNot published in a form we could verify — confirm with the board
- ReciprocityNorth Dakota, South Dakota
License classes in Minnesota
Minnesota issues the following classes. Getting the class right matters — several states have residential-only or limited-scope licenses that will not cover commercial or multifamily work:
- Registered unlicensed plumber / apprentice — must register with DLI before working
- Journeyworker Plumber — performs plumbing work under a master plumber
- Master Plumber — may contract, design and supervise
- Restricted Journeyworker Plumber — limited scope/geography
- Restricted Master Plumber — limited scope/geography
- Plumbing contractor registration — required for the business entity
Experience and training
We could not find a published hour requirement for Minnesota that we were willing to state as fact, so we have left it blank rather than guess. Ask Minnesota Department of Labor and Industry (DLI) — Construction Codes and Licensing Division / Plumbing Board for the current experience requirement in writing, and ask specifically whether classroom or trade-school hours can offset field hours — that substitution is where most of the variation between states lives.
One thing worth knowing regardless of state: the hours only count if they were logged properly at the time. Several boards require you to register as an apprentice before the clock starts, and hours worked while unregistered are simply gone. If you are early in the trade, get the registration paperwork right now rather than reconstructing it four years later.
The exam
State-administered examination through DLI for both journeyworker and master
Renewal and continuing education
Biennial — licenses expire December 31 of odd-numbered years; 16 hours of DLI-approved continuing education per cycle, at least 8 of which must relate to the Minnesota State Plumbing Code
Letting a license lapse is more expensive than it looks. Some states allow a short grace period with a penalty fee; others treat a lapsed license as forfeited and make you retest from scratch. Put the renewal date in your calendar with a 90-day warning, not a 7-day one.
Insurance and bonding
We could not verify a published state bond or insurance minimum for Minnesota. That does not mean you should work uninsured — local permit offices, general contractors and property managers routinely require a certificate regardless of what the state demands.
Separately from whatever the state requires: Pipe Well requires every plumber on the network to carry current general liability insurance and to upload the certificate before the first appointment is sent.
Working across state lines
Minnesota has reciprocity or endorsement arrangements involving North Dakota, South Dakota. Reciprocity almost never means "your license is automatically valid here" — in practice it usually waives the trade exam while you still file a full application, pay the fees and meet the insurance and continuing-education rules. Confirm the current terms with the board before you rely on it.
What plumbers actually get wrong here
Journeyworker eligibility comes from completing a DLI-registered apprenticeship program (supervised work plus related classroom instruction), sufficient documented experience as a registered unlicensed plumber, or an out-of-state license with 4+ years of experience — confirm exact hour totals with DLI. Reciprocity with ND/SD requires that you obtained the same or greater class of license by state-level examination, have held it at least one year in good standing, and have never failed the same or higher class Minnesota exam; a Minnesota license expired more than two years cannot be reinstated by reciprocity.
Once you are licensed: getting the work
A license gets you legal. It does not get you a full schedule. The usual next step is buying leads — $40 to $85 for a contact that three or four other shops bought at the same moment, which at a realistic 10–20% close rate works out to somewhere between $300 and $1,000 for every job you actually book, plus the unpaid hours spent chasing the ones that go nowhere.
Pipe Well works the other way round. We book appointments, not leads, and we handle everything up to the moment you knock on the door: the advertising, the phone call, qualifying the job, getting the address and access details, and agreeing a date and time window with the homeowner. What reaches your phone is a scheduled appointment — name, address, time window and what is wrong. You reply YES and it is yours.
What it costs
Nothing to join. No subscription, no per-lead charge. You do the job, you set your own price, and you collect payment from the customer directly. Then Pipe Well is paid 50% of the job after your documented materials come off the top:
(amount collected − documented materials) × 50%
| Collected | Materials | Net | Pipe Well | You keep |
|---|---|---|---|---|
| $400 | $40 | $360 | $180 | $220 |
| $1,200 | $520 | $680 | $340 | $860 |
| $2,800 | $800 | $2,000 | $1,000 | $1,800 |
| $8,500 | $3,200 | $5,300 | $2,650 | $5,850 |
Due within 48 hours of the customer paying you. If they never pay, you owe nothing. And look honestly at that last row — on a big repipe our share is a large number. If your book is already full of $8,500 jobs you are better off filling that capacity yourself. We are worth most to a shop with open capacity it cannot currently fill.
Apply free → Run your own numbersQuestions plumbers ask about licensing in Minnesota
Do you need a license to do plumbing work in Minnesota?
Yes. Minnesota Department of Labor and Industry (DLI) — Construction Codes and Licensing Division / Plumbing Board is the licensing authority for Minnesota. Journeyworker eligibility comes from completing a DLI-registered apprenticeship program (supervised work plus related classroom instruction), sufficient documented experience as a registered unlicensed plumber, or an out-of-state license with 4+ years of experience — confirm exact hour totals with DLI. Reciprocity with ND/SD requires that you obtained the same or greater class of license by state-level examination, have held it at least one year in good standing, and have never failed the same or higher class Minnesota exam; a Minnesota license expired more than two years cannot be reinstated by reciprocity.
Who issues the plumbing license in Minnesota?
Minnesota Department of Labor and Industry (DLI) — Construction Codes and Licensing Division / Plumbing Board. The official site is https://www.dli.mn.gov/workers/plumber/plumbing-license-basics.
What license classes exist in Minnesota?
Registered unlicensed plumber / apprentice — must register with DLI before working. Journeyworker Plumber — performs plumbing work under a master plumber. Master Plumber — may contract, design and supervise. Restricted Journeyworker Plumber — limited scope/geography. Restricted Master Plumber — limited scope/geography. Plumbing contractor registration — required for the business entity.
How many hours of experience do you need for a Minnesota plumbing license?
We could not verify a published hour requirement for Minnesota from an official source, so we are not going to guess at one. Check directly with Minnesota Department of Labor and Industry (DLI) — Construction Codes and Licensing Division / Plumbing Board.
Who administers the Minnesota plumbing exam?
State-administered examination through DLI for both journeyworker and master
How often does a Minnesota plumbing license renew?
Biennial — licenses expire December 31 of odd-numbered years; 16 hours of DLI-approved continuing education per cycle, at least 8 of which must relate to the Minnesota State Plumbing Code
Can I get booked plumbing appointments in Minnesota once I am licensed?
Yes. Pipe Well Plumbing books customer appointments in Minnesota and texts them to licensed plumbers whose service radius covers the address. Joining is free — no subscription and no per-lead fee. Pipe Well is paid 50% of the job after your documented material costs are deducted, and only after the customer has paid you.
Booked appointments in Minnesota
Set your ZIP and a service radius of at least 30 miles and we will match appointments inside it. Free to join.
Join Free → Plumbing jobs in MinnesotaPlumbing license requirements in other states
Compiled from Minnesota Department of Labor and Industry (DLI) — Construction Codes and Licensing Division / Plumbing Board published materials, last reviewed July 2026. Where a figure could not be verified against a primary source we have said so rather than estimate it. Spotted something out of date? Email info@pipewellplumbing.com and we will correct it.