Plumber licensing in Oregon
Licensed by the state
Oregon licenses this trade. You need your own Oregon license before you work here — or one from a state Oregon accepts.
✓ Verified 22 July 2026 · board verified
Oregon accepts licenses fromIdaho · Montana
Oregon licenses are accepted inIdaho · Montana · New Hampshire
Apply to reciprocate into Oregon →
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
Oregon has no apprentice credential — you can start with no card of your own
- Who issues it
- BOLI Apprenticeship and Training Division, not the Building Codes Division
No walk-up apprentice card - a sponsoring committee or employer enrolls you in a state-registered four-year program, and its completion certificate is what feeds the journeyman application. Confirm the enrollment mechanics and any fee with BOLI.
Bringing your license from another state
Oregon names exactly two reciprocal states for plumbing — Idaho and Montana — journeyman only, and the board accepts a reciprocal license only from a state where you actually tested. The two agreements differ: the Idaho deal wants an exam-earned license, 7,700 hours, and 576 classroom hours, with no holding period; the Montana deal wants the license held a year, refuses any license that was itself earned by reciprocity, and gives a Montana master an Oregon journeyman card, not a master.
One sequencing trap in the Montana agreement: once you open an Oregon exam application, you cannot switch to the reciprocity track — decide before you file. Everyone else takes the exam; Oregon accepts no substantially-equivalent license from anywhere.
Can you work while it is pending?
No — Oregon has no temporary or provisional permit for plumbers, and the prohibition carries no pending-application exception. The apprentice route is not a drop-in bridge either: Oregon apprentices work through a registered four-year program, enrolled via a sponsoring committee or employer, not a walk-up registration.
Treat the start date as the day the license issues, and confirm timing with the Building Codes Division before promising one.
The exam and the hours
The requirement is 7,700 on-the-job hours across the required work categories plus 576 hours of classroom training — the standard proof is a completed four-year registered apprenticeship. The application gates the exam: you mail the whole packet at once — application, per-employer experience verification, diploma or GED, transcripts, a passport photo — the division reviews it in two to three weeks, and its authorization letter is what lets you schedule the test.
Results come back by mail in about two weeks.
How apprenticing works here
Apprentices work lawfully only under a licensed journeyman's supervision, and registration runs through a state-registered program at the Bureau of Labor and Industries — your sponsoring committee or employer enrolls you. The completion certificate from that four-year program is what feeds the journeyman application. Confirm the enrollment mechanics with BOLI; the licensing board does not run this piece.
The local picture
No Oregon city or county issues its own plumber license — the state credential is the only card. Local permits and inspections still apply job to job, and any business-registration obligations land on the employer.
If you want to contract for yourself
Oregon runs both credentials and they do not substitute: the Plumbing Business license lets a firm contract for plumbing work, and the division states plainly that it does not entitle anyone to work as a journeyman. You personally hold the journeyman license or a supervised apprentice status — and a contractor who lets an unlicensed hand work journeyman scope is violating the statute themselves.
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.