Oklahoma Plumber License Requirements

Official classification: Plumber License · Issued by the Construction Industries Board (CIB).

🔧 PlumberOK ✔ Verified 2026-06-26

In Oklahoma, plumbers must hold the Plumber License, issued by the Construction Industries Board (CIB), and a $5,000 surety bond is required. Full requirements — experience, exams, fees, insurance, renewal and reciprocity — are detailed below.

How to become a licensed plumber in Oklahoma

Follow these steps to earn your Plumber License. Every figure is verified against the Construction Industries Board (CIB); full detail for each step is further down the page.

Build the required experience. Apprentice: minimum age 16; Journeyman: 3 years as apprentice, OR 3 years military plumbing experience, OR valid out-of-state license in good standing. Educational substitutions: 1,000 classroom hours = 2 years; 500 hours = 1 year; 375 hours = 9 months; 334 hours = 8 months; 250 hours = 6 months. Contractor: 1 additional year as licensed journeyman under contractor supervision.
Pass the Journeyman Plumber Exam and Plumbing Contractor Exam and Business & Law Exam exams. Providers, passing scores and fees are in the Exams section below.
Secure your surety bond. Oklahoma requires $5,000 surety bond payable to CIB (required for contractors; can waive with notarized affidavit).
Line up insurance. You'll need liability insurance ($50,000 minimum general liability insurance).
Clear the background check. Not specified
Meet the credit / financial requirement. —
Submit your application and fees. Apply through the Construction Industries Board (CIB) — Apprentice: $5 application + $20 registration ($25). Journeyman: $25 application + $50 license ($75). Contractor: $30 application + $300 license ($330). Per OAC 158:30-9-2. application fee, plus a Included in the totals above license fee. Processing time: Not publicly disclosed.
Keep the license active. Renew annual (continuing education tracked every 3 years), completing 6 hours every 3 years for journeymen and contractors only.

License types

Apprentice Plumber — Works under direct supervision of a licensed journeyman or contractor plumber; minimum age 16
Journeyman Plumber — Can install, alter, and repair residential and commercial plumbing systems; may supervise up to 3 apprentices
Residential Journeyman Plumber — Limited to 1-2 family dwellings, maximum 3 stories
Plumbing Contractor (Master) — Plans, oversees, and installs plumbing systems as individual or business entity for all building types
Residential Plumbing Contractor (Master) — Residential-only plumbing contractor, limited to 1-2 family dwellings, maximum 3 stories

Requirements at a glance

Experience required	Apprentice: minimum age 16; Journeyman: 3 years as apprentice, OR 3 years military plumbing experience, OR valid out-of-state license in good standing. Educational substitutions: 1,000 classroom hours = 2 years; 500 hours = 1 year; 375 hours = 9 months; 334 hours = 8 months; 250 hours = 6 months. Contractor: 1 additional year as licensed journeyman under contractor supervision.
Application fee	Apprentice: $5 application + $20 registration ($25). Journeyman: $25 application + $50 license ($75). Contractor: $30 application + $300 license ($330). Per OAC 158:30-9-2.
License fee	Included in the totals above
Renewal fee	Apprentice $20; Journeyman $75 (+$25 late); Contractor $200 (+$100 late). Per OAC 158:30-9-2.
Renewal period	Annual (continuing education tracked every 3 years)
Continuing education	6 hours every 3 years for journeymen and contractors only
Bond required	$5,000 surety bond payable to CIB (required for contractors; can waive with notarized affidavit)
Liability insurance	$50,000 minimum general liability insurance
Property damage	—
Workers' comp	Not specified
Background check	Not specified
Credit requirement	—
Reciprocity	Arkansas (Journeyman reciprocity agreement available)
Processing time	Not publicly disclosed

Exams

Journeyman Plumber Exam	Provider: PSI · Passing: 75% · Fee: $92
Plumbing Contractor Exam	Provider: PSI · Passing: 75% · Fee: $92
Business & Law Exam	Provider: PSI · Passing: 75% · Fee: $92

Preparing for the Plumber exam? State-specific contractor exam-prep courses help you pass the first time. Start exam prep →

Local / municipal notes

Oklahoma offers multiple license tiers including residential-specific licenses with scope limitations. Bond and insurance requirements can be waived with notarized affidavit. Apprentice license does not require exam.

Frequently asked questions

How much does a Oklahoma plumber license cost?

Application: Apprentice: $5 application + $20 registration ($25). Journeyman: $25 application + $50 license ($75). Contractor: $30 application + $300 license ($330). Per OAC 158:30-9-2.. License: Included in the totals above. Renewal: Apprentice $20; Journeyman $75 (+$25 late); Contractor $200 (+$100 late). Per OAC 158:30-9-2..

Do plumbers in Oklahoma need a surety bond?

$5,000 surety bond payable to CIB (required for contractors; can waive with notarized affidavit)

What experience is required for a Oklahoma plumber license?

Apprentice: minimum age 16; Journeyman: 3 years as apprentice, OR 3 years military plumbing experience, OR valid out-of-state license in good standing. Educational substitutions: 1,000 classroom hours = 2 years; 500 hours = 1 year; 375 hours = 9 months; 334 hours = 8 months; 250 hours = 6 months. Contractor: 1 additional year as licensed journeyman under contractor supervision.

Is insurance required for plumbers in Oklahoma?

Liability: $50,000 minimum general liability insurance Workers' compensation: Not specified

How often must a Oklahoma plumber license be renewed?

Annual (continuing education tracked every 3 years). Continuing education: 6 hours every 3 years for journeymen and contractors only

Fees and rules change frequently (often annually). This page was last verified on 2026-06-26 — always confirm current requirements directly with the Construction Industries Board (CIB) before applying. This is not legal advice.