Requirements, license levels, and the issuing authority — sourced from Oklahoma's official board.
Governed by the Plumbing License Law of 1955 (OAC Title 158, Chapter 30). Oklahoma has no state general-contractor license.
| Requirements | Apprentice: registered 1-year periods, works under direct supervision of a licensed plumber (max 3 apprentices per licensed plumber). Journeyman: age 18+ and 3 years experience under a licensed plumbing contractor (or equivalent verifiable military experience); an associate degree / CareerTech diploma of a plumbing program with 1,000+ classroom hours may substitute for part of the experience; pass a third-party exam. Plumbing Contractor: licensed journeyman experience plus exam. |
| Reciprocity | CIB maintains reciprocity agreements, including an Arkansas plumbing reciprocity agreement (see inter-agency agreements). |
| Renewal | Journeymen and contractors must complete 6 hours of continuing education within the 36 months preceding license expiration. Journeyman renewal fee $75 ($100 with late fee). |
| Notes | Governed by the Plumbing License Law of 1955 (OAC Title 158, Chapter 30). Oklahoma has no state general-contractor license. |
Sources: oklahoma.gov · oklahoma.gov · oklahoma.gov. Always confirm current requirements with the issuing authority.
New licenses, ladder upgrades, classification changes and lapses, by market and credential tier. Read the quarterly free, or license the underlying data.