Plumber license requirements in Oklahoma.
Oklahoma licenses plumbers statewide through the Construction Industries Board. The journeyman ladder runs on registered apprentice hours, trade schooling can buy down part of that requirement, and active contractors carry both a bond and a general liability minimum.
What Oklahoma requires.
Apprentice Plumber (registration)
Registered with the board while working under a licensed journeyman or plumbing contractor.
Journeyman Plumber
Requires four years and 8,000 hours of qualifying experience as a registered apprentice under a licensed journeyman or plumbing contractor.
Plumbing Contractor
Meets the journeyman requirements plus one additional year of experience in the plumbing trade.
Getting the Apprentice Plumber
- Journeyman: four years and 8,000 hours as a registered apprentice plumber under a licensed journeyman or plumbing contractor
- An associate degree or Career Tech diploma with at least 1,000 classroom hours substitutes for two years of that experience; a Career Tech diploma with at least 500 classroom hours substitutes for one year
- Contractor: the journeyman requirements plus one more year of plumbing trade experience
- Active contractors maintain a $5,000 corporate surety bond payable to the CIB and a certificate of insurance showing at least $50,000 in commercial general liability coverage
Renewal: Journeymen and contractors must complete 6 hours of continuing education within the 36 months preceding license expiration.
Verified 2026-08 against the sources below. Licensing rules change — confirm with the board before relying on this page.
Oklahoma plumbing licensing FAQ.
Do you need a license to do plumbing work in Oklahoma?
Yes. The Oklahoma Construction Industries Board licenses plumbers statewide, registering apprentices and licensing journeymen and plumbing contractors.
How many hours do you need for a journeyman plumber license in Oklahoma?
Four years and 8,000 hours of qualifying experience as a registered apprentice under a licensed journeyman or plumbing contractor. Schooling can reduce that — an associate degree or Career Tech diploma with 1,000+ classroom hours covers two years, and a Career Tech diploma with 500+ hours covers one.
What does an Oklahoma plumbing contractor license require?
Everything the journeyman license requires plus one additional year of plumbing trade experience. Active contractors also carry a $5,000 corporate surety bond payable to the CIB and at least $50,000 in commercial general liability insurance.
What continuing education do Oklahoma plumbers need?
Six hours within the 36 months before your license expires, required of both journeymen and contractors.
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