Oklahoma · plumber licensing · verified July 2026

Oklahoma plumber license requirements

Do you need a license to work as a plumber in Oklahoma?

Oklahoma licenses plumbers statewide, so one credential is valid across the whole state.

Fee schedule is per OAC 158:30-9-2 (permanent rules eff. 10/1/2024): journeyman application $25 + initial license $50 (combined $75); contractor application $30 + initial license $300 (combined $330); apprentice $5 application + $20 registration. Renewal fees confirmed on the CIB renewal form ($75 journeyman, $200 contractor; late totals $100/$300). Exam costs are negotiated with the testing vendor and posted at the test site, so no fixed statewide exam fee exists. Arkansas journeyman reciprocity agreement is referenced on the CIB site; OAC 158:30-5-4 also allows licensure by reciprocity for out-of-state licensees. Some third-party sites describe a 36-month license term, that is the CE cycle, not the license term; the rules set a 1-year license duration.

What licenses does Oklahoma issue?

The Oklahoma Construction Industries Board (Plumbing Division / Plumbing Examiners Committee) issues the credentials below for this trade. Boards often list further classes for specialties and business licenses; these are the ones this page covers.

Hours are what each class asks for on its own terms. Where a senior class shows fewer than a journeyman, the board is counting time served after the earlier license rather than from the start; the prerequisite column says which.

Source: Oklahoma Construction Industries Board (Plumbing Division / Plumbing Examiners Committee) (oklahoma.gov). Verified July 2026.

What exam does Oklahoma require?

Oklahoma Plumbing Journeyman Examination. Administered by Third-party testing vendor under contract with the Construction Industries Board (fee posted at test site per OAC 158:30-9-2(a)).

Oklahoma Plumbing Contractor Examination. Administered by Third-party testing vendor under contract with the Construction Industries Board.

How much does an Oklahoma plumber license cost?

Getting a Plumbing Journeyman (unlimited) plumber license in Oklahoma costs $75 in board fees, before any training. That is the application fee and the initial license fee charged once, with renewal charged separately below. No board publishes this total, so it is added up here from the schedule it does publish. An exam is required and its fee is not in that figure, because no amount for it appears in the board material this page is built from. Check the board's current fee schedule before budgeting.

• Application fee$25
• Initial license fee$50
• Renewal fee (recurring)$75

How often do you renew, and what continuing education is required?

Renewal period: Annual, licenses have a duration of no longer than one year and expire on the last day of the licensee's birth month (OAC 158:30-9-3)

Continuing education: 6 hours of approved continuing education every 36 months preceding license expiration (journeymen and contractors); licensees are exempt for 3 years from the date they passed their licensing exam (OAC 158:30-9-4)

How does the apprenticeship route work?

No fixed state hour requirement; apprentices register annually with the CIB and work under supervision. Three years of supervised trade experience (typically gained as a registered apprentice) qualifies an applicant for the journeyman exam; approved classroom programs (1,000 hours) can substitute for up to two of the three years. Exam retakes allowed 30 days after first failure, 90 days after subsequent failures.

Which states does Oklahoma have license reciprocity with?

Oklahoma appears in 1 published reciprocal licensing agreement for this trade, covering Arkansas. Boards write these as agreements between two states rather than as a one-way list, and some publish the list while their counterpart does not, so this counts every agreement naming Oklahoma from either side. Recognition is never automatic: the board you apply to decides, and most require the original license to have been earned by examination and to be in good standing.

How does Oklahoma compare to neighboring states?

Requirements stop at the state line, which matters if you live near one or expect to move. Here is what the neighboring states ask of the same trade.

Source: state licensing boards. Verified July 2026.

Sources and verification

Other states with published requirements for this trade: Oregon, Pennsylvania, Rhode Island.

Price the whole path with the license cost estimator, or weigh earning against paying for school with the apprenticeship comparison. Back to plumbers overview.

Licensing requirements change between our verification sweeps. This page is informational only, so confirm current requirements with Oklahoma Construction Industries Board (Plumbing Division / Plumbing Examiners Committee) before making decisions. Not legal advice.