Plumber License Requirements in Oklahoma
| Licensing Authority | Oklahoma Construction Industries Board (CIB) |
| License Type | Journeyman / Plumbing Contractor |
| Experience Required | Journeyman: completion of a 4-year plumbing apprenticeship or 8,000 hours of supervised experience under a licensed plumbing contractor. |
| Exam Required | Yes — Plumbing Trade Exam + Business and Law Exam |
| Bond Required | Yes — $5,000 |
| Insurance | General liability: required. Workers comp: required with employees |
| Continuing Education | 6 hours every 3 years |
| Processing Time | 4-6 weeks |
Fee Breakdown
| Application Fee | $65 |
| Exam Fee | $90 |
| Initial License Fee | $115 |
| Contractor license fee | $330 |
| Contractor renewal | $200 |
| Est. Initial Total | $800 |
Renewal: $75 every 3 years
Exam Requirements
Plumbing Trade Exam
Business and Law Exam
Exam provider: PSI
License Tiers
Apprentice
Entry level — must work under supervision
Exam: Not required
Journeyman Plumber
8,000 hours (approx. 4 years) supervised experience
Exam: Required
Plumbing Contractor
Journeyman license plus business qualifications
Exam: Required
Frequently Asked Questions
Do I need a plumber license in Oklahoma?
Yes, Oklahoma requires a statewide plumber license through the Oklahoma Construction Industries Board.
How much does a plumber license cost in Oklahoma?
The estimated initial cost is $270, including application, exam, and license fees. A $5,000 surety bond is also required.
What experience do I need for a plumber license in Oklahoma?
Journeyman: completion of a 4-year plumbing apprenticeship or 8,000 hours of supervised experience under a licensed plumbing contractor.
What exams are required for a plumber license in Oklahoma?
You must pass the Plumbing Trade Exam and Business and Law Exam exams. A passing score of 75% is required. Exams are administered by PSI.
Do I need a bond for a plumber license in Oklahoma?
Yes, a $5,000 surety bond is required. Active plumbing contractors must carry a $5,000 corporate surety bond payable to the Oklahoma CIB
How long does it take to get a plumber license in Oklahoma?
Processing time is typically 4-6 weeks after submitting a complete application.
Is continuing education required for plumbers in Oklahoma?
Yes, 6 hours per every 3 years is required for license renewal.
Data last verified: 2026-04-02 | Source: CIB