Plumber License Requirements in Oklahoma
License RequiredLast verified March 9, 2026
Agency And Exam
Issuing agency: Oklahoma Construction Industries Board
Official licensing agency website
Exam provider: PSI
Reciprocity And License Levels
License levels
Unlimited Plumbing ContractorUnlimited Journeyman PlumberApprentice PlumberResidential Plumbing ContractorResidential Journeyman Plumber
Reciprocity states
AR
Notes
Oklahoma licenses plumbing through the Construction Industries Board. The board's official materials cover unlimited and residential plumbing contractor and journeyman licenses, apprentice registration, and reciprocity processing for qualifying Arkansas plumbing licensees under the current agreement framework. Verified against Oklahoma plumbing licensing materials on 2026-03-09.