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Plumbing license · Oklahoma

How to get a plumbing license in Oklahoma: the official requirements

The Plumbing Journeyman license, the experience and training it takes, the exam and how to apply, from the Oklahoma Construction Industries Board.

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Updated Nov 9, 2026 · Requirements: each state's plumbing licensing authority or its rules
Quick answer

In Oklahoma, the state plumbing license for individual plumbers is issued by the Oklahoma Construction Industries Board. The plumbing journeyman license from the Oklahoma Construction Industries Board. A licensed plumbing journeyman works under a licensed plumbing contractor and can supervise up to three apprentices. Apprentice or trainee registration: Register as a plumbing apprentice: all plumbing helpers doing plumbing work must be registered and directly supervised by a licensed journeyman or contractor, and registered apprentice hours count toward the journeyman experience requirement. The apprentice card expires one year after it is issued, and the employing licensed contractor completes part of the application. Experience and training: Be 18 or older with three years of experience in the plumbing trade while employed by a licensed plumbing contractor (or equivalent verifiable U.S. military plumbing experience, or a current out-of-state plumbing license in good standing). Oklahoma experience counts only while you hold an apprentice registration. An approved plumbing program of at least 1,000 classroom hours may replace two years of experience, and one of at least 500 hours may replace one year. Licensing exam: The Oklahoma Plumbing exam, which every applicant must pass. Once the Board approves your application, it forwards your information to its national testing provider, PSI, and you contact PSI to schedule. How to apply: Send the Plumbing License Application (Contractor and Journeyman) with the fee, payable to the Construction Industries Board, and the notarized experience verification affidavits; the Board reviews it for approval.

Requirements

Oklahoma plumbing license requirements

Data
Oklahoma plumbing license requirements (Oklahoma Construction Industries Board)
RequirementOklahoma
License you apply forThe plumbing journeyman license from the Oklahoma Construction Industries Board. A licensed plumbing journeyman works under a licensed plumbing contractor and can supervise up to three apprentices.
Apprentice or trainee registrationRegister as a plumbing apprentice: all plumbing helpers doing plumbing work must be registered and directly supervised by a licensed journeyman or contractor, and registered apprentice hours count toward the journeyman experience requirement. The apprentice card expires one year after it is issued, and the employing licensed contractor completes part of the application.
Experience and trainingBe 18 or older with three years of experience in the plumbing trade while employed by a licensed plumbing contractor (or equivalent verifiable U.S. military plumbing experience, or a current out-of-state plumbing license in good standing). Oklahoma experience counts only while you hold an apprentice registration. An approved plumbing program of at least 1,000 classroom hours may replace two years of experience, and one of at least 500 hours may replace one year.
Classroom hoursNot stated in the official source we read. Check with the Oklahoma Construction Industries Board.
Licensing examThe Oklahoma Plumbing exam, which every applicant must pass. Once the Board approves your application, it forwards your information to its national testing provider, PSI, and you contact PSI to schedule.
How to applySend the Plumbing License Application (Contractor and Journeyman) with the fee, payable to the Construction Industries Board, and the notarized experience verification affidavits; the Board reviews it for approval.
Background checkNot stated in the official source we read. Check with the Oklahoma Construction Industries Board.
State feesPlumbing journeyman: $75.00 ($50.00 license fee plus $25.00 application processing fee). Apprentice registration: $25.00 ($20.00 registration plus $5.00 application fee). PSI testing fees are separate.
License termNot stated in the official source we read. Check with the Oklahoma Construction Industries Board.
Continuing educationNot stated in the official source we read. Check with the Oklahoma Construction Industries Board.

Where the official source we read does not state something, the table says so rather than guessing. Fees shown are the licensing authority's own. Fees charged by exam vendors, schools, apprenticeship programs, fingerprint vendors and application portals are not included.

This page covers the plumbing license issued by the state. Cities and counties can have their own registration, permit or license rules; ask the local building department where you will work.

Steps

How to get licensed in Oklahoma

Data
  1. Register with the CIB as a plumbing apprentice while working for a licensed plumbing contractor.
  2. Gain three years of plumbing experience under a licensed plumbing contractor (approved classroom programs can replace part of it).
  3. Send the plumbing license application with the $75.00 fee and your experience affidavits to the Construction Industries Board.
  4. Once approved, schedule the exam with PSI.
  5. Pass the Oklahoma Plumbing exam.
Next

Go further

All statesPlumbing license by state

Requirements state by state.

Open →CareerHow to become a plumber

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FAQ

Questions people ask

How do I get a plumbing license in Oklahoma?
In Oklahoma, the state plumbing license for individual plumbers is issued by the Oklahoma Construction Industries Board. The plumbing journeyman license from the Oklahoma Construction Industries Board. A licensed plumbing journeyman works under a licensed plumbing contractor and can supervise up to three apprentices. Apprentice or trainee registration: Register as a plumbing apprentice: all plumbing helpers doing plumbing work must be registered and directly supervised by a licensed journeyman or contractor, and registered apprentice hours count toward the journeyman experience requirement. The apprentice card expires one year after it is issued, and the employing licensed contractor completes part of the application. Experience and training: Be 18 or older with three years of experience in the plumbing trade while employed by a licensed plumbing contractor (or equivalent verifiable U.S. military plumbing experience, or a current out-of-state plumbing license in good standing). Oklahoma experience counts only while you hold an apprentice registration. An approved plumbing program of at least 1,000 classroom hours may replace two years of experience, and one of at least 500 hours may replace one year. Licensing exam: The Oklahoma Plumbing exam, which every applicant must pass. Once the Board approves your application, it forwards your information to its national testing provider, PSI, and you contact PSI to schedule. How to apply: Send the Plumbing License Application (Contractor and Journeyman) with the fee, payable to the Construction Industries Board, and the notarized experience verification affidavits; the Board reviews it for approval.
How many hours of experience do I need for an Oklahoma plumbing license?
Be 18 or older with three years of experience in the plumbing trade while employed by a licensed plumbing contractor (or equivalent verifiable U.S. military plumbing experience, or a current out-of-state plumbing license in good standing). Oklahoma experience counts only while you hold an apprentice registration. An approved plumbing program of at least 1,000 classroom hours may replace two years of experience, and one of at least 500 hours may replace one year.
Is there an apprentice or trainee license in Oklahoma?
Register as a plumbing apprentice: all plumbing helpers doing plumbing work must be registered and directly supervised by a licensed journeyman or contractor, and registered apprentice hours count toward the journeyman experience requirement. The apprentice card expires one year after it is issued, and the employing licensed contractor completes part of the application.
Do I need to pass an exam for an Oklahoma plumbing license?
The Oklahoma Plumbing exam, which every applicant must pass. Once the Board approves your application, it forwards your information to its national testing provider, PSI, and you contact PSI to schedule.
How long is an Oklahoma plumbing license good for?
Not stated in the official source we read. Check with the Oklahoma Construction Industries Board.
How much does an Oklahoma plumbing license cost?
Plumbing journeyman: $75.00 ($50.00 license fee plus $25.00 application processing fee). Apprentice registration: $25.00 ($20.00 registration plus $5.00 application fee). PSI testing fees are separate. Fees shown are the licensing authority's own. Fees charged by exam vendors, schools, apprenticeship programs, fingerprint vendors and application portals are not included.
Method

How this page is built

Each fact on this page comes from the Oklahoma Construction Industries Board (sources named below), read on the dates shown, with the exact wording we relied on kept on file. Requirements and fees change; the Oklahoma Construction Industries Board's current instructions govern. We re-read each state's sources every six months (next review by May 10, 2027).

What this page can't tell you
  • Not legal advice.
  • Licensing rules can change. Verify current requirements with the issuing agency.
  • Fees shown are the licensing authority's own. Fees charged by exam vendors, schools, apprenticeship programs, fingerprint vendors and application portals are not included.
  • This page covers the plumbing license issued by the state. Cities and counties can have their own registration, permit or license rules; ask the local building department where you will work.
  • This page covers the individual license named above. Master, contractor, specialty, residential, limited and out-of-state (reciprocity) licenses have their own rules.
Sources
  1. Oklahoma Construction Industries Board, Plumbing Journeyman, official source, read Nov 9, 2026.
  2. Oklahoma Construction Industries Board, Plumbing Apprentice, official source, read Nov 9, 2026.
  3. Oklahoma Construction Industries Board, Plumbing Application Information (Contractor and Journeyman), revised August 2024, official source, read Nov 9, 2026.
  4. Oklahoma Construction Industries Board, Apprentice Application (plumbing, electrical, mechanical), revised July 2024, official source, read Nov 9, 2026.