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Oklahoma Plumbing and Gas License (Contractor, Journeyman)

License Requirements

Requirements to Obtaining your License


  • Applicants for the plumbing contractor license must verify four (4) years plumbing experience and be eighteen (18) years of age to be eligible to take the examination.
  • Experience cannot be verified by a family member or the applicant's self.
  • Each active electrical contractor must furnish a $5,000 surety bond.
  • Workers compensation and $50,000 liability insurance are also required.
  • To become a licensed contractor, the business and law exam must also be passed.


  • Applicants for the journeyman examination must be eighteen (18) years of age and certify three (3) years plumbing experience to be eligible to take the examination. Experience cannot be verified by a family member or the applicant's self.

Each journeyman must be licensed and employed by a licensed contractor before engaging in work.

Work Under this License

Work that can be Done Under this License

A Master Plumbing License covers unlimited plumbing work including sanitary drainage, water supply, storm drainage, and natural gas piping.

A Journeyman Plumbing license covers unlimited plumbing work including sanitary drainage, water supply, storm drainage, and natural gas piping while under the supervision of a Master Plumber.

Applications for a License

Applying to get your License

An application for licensure can be obtained from the Oklahoma Construction Industries Board calling 1-405-271-5217 .

Application and License Fees

  • Plumbing Contractor $225.00 (License $200.00 / Processing $25.00)
  • Plumbing Journeyman (Reciprocal or otherwise) $75.00 (License $50.00 / Processing $25.00)

Licenses are good for 1 year.

Licenses are good for 1 year.


Reciprocity Agreements

Reciprocity is considered on a case by case basis.

Continuing Education

Continuing Education

6 hours of continuing education are required within 1 year after the state adopts a newer code.


Exam Details

  • To take the exam, you must be preapproved by the state.
  • The exam has 80 questions and a time limit of 180 minutes
  • A score of 75% is needed to pass.
  • The exam fee is $88. If you are sitting for the trade exam and the business law exam in the same session, the fee for both parts combined is $88.
  • Topics on the exam include general knowledge and math; general requirements pertaining to administration, structural, backflow, materials and supports, joints and connections, storm drains, testing; water supply and distribution; fixtures including water heaters; drain, waste, and vent systems including indirect and special waste; traps, cleanouts, and interceptors; isometric analysis; gas appliances and piping; and OSHA safety.
  • To schedule an examination, contact PSI Examination services at 1-800-733-9267.

Books and References for the Exam

The following references are permitted to be taken into the examination. These references may be tabbed (with a permanent index tab) and highlighted. They are available for purchase from our online contractor’s bookstore or by calling our office at 1-800-952-0910.

  • 2009 International Plumbing Code
  • 2009 International Fuel Gas Code
  • Mathematics for Plumbers and Pipefitters
  • OSHA Code of Federal Regulations Part 1926
Exam Review and Education

Exam Review, Training, Education

We offer review for the Oklahoma Plumbing and Gas Contractor, Journeyman examinations in an online format. This course includes highlighting guides and practice quizzes for the reference materials allowed into the examination. The fee for the course is $150. For more information, or to order, contact our office at 1-800-952-0910.

Online Exam Review: $150

Buy Now, Online Training Buy Now, Reference Books

OK Exam Review

Oklahoma plumbing Exam Review

Online Exam Review

Study at home to pass your Oklahoma Exam today!

Buy Now

Features and Benefits:
  • Study Tips
  • Instructor Support
  • Highlighting Guides
  • Practice Exams
  • Math and Calculations
  • Licensing Information
  • iOS/Android Tablet and Smartphone Compatible
  • 1 Year of Access
  • Price: $150

Pricing Guarantee
If you find a competitor that offers a similar review at a lower price, we will beat their price.

No Pass, No Pay
If you are not able to pass your exam on the SECOND attempt, we will refund your course fee.  Conditions do apply.  Call for details.

Permanent Tabs:
  • Pre-Printed Tabs
  • Blank Tabs