Oklahoma Licensing Frequently Asked Questions

Navigating the ins and outs of licensing can be difficult. Here are some frequently asked questions about Oklahoma plumber licensing to get you the answers you need and on the road to a great career!

What are the types of plumbing licenses available in Oklahoma?

• Apprentice
• Journeyman
• Plumbing Contractor

How do I get a journeyman plumber license in Oklahoma?

1. Meet State Requirments
   • Work as an apprentice for 3 years OR
   • Have at least 3 years of variable experience in plumbing trades while serving in the U.S. military OR
   • Have a verifiable out-of-state plumbing license that is current and in good standing
     NOTE: An associate degree or Career Tech diploma certifying completion of a plumbing program of 1000 hours may be substituted for 2 years of experience.
2. Complete a Journeyman Plumber Application
3. Pay the Application fee of $75
4. The board will send you a letter when your application is approved. Once you receive this letter contact PSI to schedule your exam 800-733-9267 or www.psiexams.com
5. Pass the Journeyman and Natural Gas exam

How do I get my plumbing contractor license in Oklahoma?

1. Meet State Requirements
   • Work as an apprentice for 3 years OR
   • Have at least 3 years of variable experience in plumbing trades while serving in the U.S. military OR
   • Have a verifiable out-of-state plumbing license that is current and in good standing
     NOTE: An associate degree or Career Tech diploma certifying completion of a plumbing program of 1000 hours may be substituted for 2 years of experience.
2. Complete a Plumbing Contractor Application
3. Pay the Application fee of $330
4. The board will send you a letter when your application is approved. Once you receive this letter contact PSI to schedule your exam 800-733-9267 or www.psiexams.com
5. Pass the Trade Exam and the Business and Law Exam

What does your plumbing exam prep cover?

Plumbing Practical Exam

• Administration, Scope and Intent/Purpose
• Definitions and Symbols
• Plumbing Math
• General Regulations
• Fixtures, Faucets, and Fixture Fittings
• Water Heaters
• Water Supply and Distribution
• Sanitary Drainage
• Indirect and Special Waste
• Vents
• Traps, Interceptors, and Separators
• Storm Drainage
• Nonpotable Water Systems
• Subsurface Landscape Irrigation Systems
• Appendix E
• Isometrics
• Private Sewage Systems
• International Fuel Gas Code
• Hands-On Practical Application
• Practice Tests

Business & Law

• Estimating and Bidding
• Project Management
• Contracts
• Business Organization
• Financial Management
• Labor Law
• Risk Management
• Tax Law
• Safety Recordkeeping
• Licensing
• Lien Law
• OSHA

Bonus Materials

• Reading and Understanding the PSI Bulletin
• Books That You Should Have During the Exam
• Effective Study Techniques

Who issues the Oklahoma plumbing licenses?

Oklahoma Construction Industries Board Plumbing Division
2401 NW 23rd Street, Suite 2F
Oklahoma City, OK 73107
Telephone: (405) 521-6550

Useful Links

Oklahoma Plumber PSI Candidate Bulletin