STATE LICENSE
RequiredOklahoma Construction Industries Board (CIB)
The Plumbing License Law of 1955 makes it a misdemeanor to perform journeyman plumbing work without a journeyman or contractor license, or to engage in the business of plumbing unless the person or a bona fide officer of the firm holds a plumbing contractor license (59 O.S. § 1012). Licenses last no longer than one year, expire the last day of the birth month, and renew only with required continuing education (§ 1009).
Active contractors file a $5,000 surety bond — cash or a certificate of deposit may substitute — and carry $50,000 general liability (§ 1002(B); OAC 158:30-5-2). Journeymen and contractors need 6 CE hours in the 36 months before expiration. Every state-licensed plumbing contractor must also register with the plumbing inspector of each city or town where they operate (§ 1020).
The state sets the license floor; the county or city permit office controls filing, inspections, and local rules wherever the job site sits.
Licensing is state (CIB), but cities and towns of 2,000 or more with water or sewer systems must regulate plumbing, require permits for all work except leak repair, and maintain a plumbing inspector (59 O.S. §§ 1015–1016). Local codes may not conflict with OUBCC or CIB rules, and each state-licensed contractor must register with every city where they operate (§ 1020).
The local offices section below names the exact permit desk for every Oklahoma county on file.
Each row names the issuing authority, cost, timeline, citation, and status behind the requirement — verified against the official source.
Published fees from the issuing authorities, as of October 2026. Local permit fees vary by project and jurisdiction — the basis is stated where a flat number does not exist.
A state bond, cash, or CD posted with CIB is deemed sufficient for any municipality — file a copy with the city if its ordinance requires.
State licensing doesn't end at the state line of paperwork: each city's plumbing inspector registers state-licensed contractors and may revoke that registration.
Plumbing CE stayed at 6 hours per 36 months; the 2026 increase applies only to electrical.
A practical sequence for a new plumbing contractor in Oklahoma. Actual agency processing times are noted in the ledger above.
Each item names the issuing authority, cycle, and citation.
Statutory consequences with their citations — not estimates, not “commonly cited” guesses.
Acting as or performing the work of a journeyman or plumbing contractor without a license is a misdemeanor.
The Plumbing Hearing Board may fine each violation; each day may be separate.
Contracting without an active license is cited on the CIB schedule.
Inside city limits, the city office listed here issues the permit; the county office serves unincorporated areas. Every office links to its official page.
Every fact in this file was checked against these official sources on October 2026.
Pending verification: Whether the CIB copy of the Plumbing License Law reflects any 2025–2026 amendments (its latest historical note is 2021) · Experience requirement for the residential journeyman and residential contractor categories (OAC 158:30-5-1(d) not fully retrieved)
General information, not legal advice. Always confirm requirements, deadlines, and forms with the issuing authority before filing or contracting.
Store licenses, permits, policies, and renewal dates in one place.