How to Get a Contractor License or Registration in Oklahoma

Which credential exists for your trade

Start by matching your work to the Board's own list. The CIB states that the skilled trades it regulates are "Plumbing, Electrical, Mechanical, Roofing, Building and Construction Inspectors, and Home Inspectors." Plumbing, electrical and mechanical run on the apprentice-journeyman-contractor ladder. Roofing runs on annual registration with optional endorsements. Building and construction inspectors and home inspectors have their own licences with their own education rules.

Two of those inspector licences carry education requirements worth knowing even if you are not chasing them. The CIB states that a home inspector applicant generally must "take and pass a ninety (90) hour approved home inspection training program at a school of home inspection approved by the Committee", and that renewal requires at least eight credit hours of continuing education, "consisting of no more than two (2) hours of Ancillary Systems topics per year". Building and construction inspectors must submit evidence of six clock hours of approved continuing education for each licence category, being plumbing, electrical, mechanical and building/structure, within the twelve months immediately preceding the term.

If your trade is not on that list, there is no CIB application. The Board also notes two specific negatives that save people money: asked whether there is a CIB low voltage licence, it answers "No. A license is not required for performing solely telephone and CATV systems", and on the mechanical side it states that "Currently, the performance of air duct cleaning does not require a state license in Oklahoma."

Official sources: Oklahoma Construction Industries Board: Frequently Asked Questions; Oklahoma CIB: Home Inspectors

Plumbing: three years to journeyman, four to contractor

The CIB plumbing application sets out the qualification in its own words. Applicants for the journeyman examination "must be eighteen (18) years of age or older and have either: three (3) years of experience in the plumbing trade while employed by a licensed Plumbing contractor", or equivalent verifiable three years while serving in the U.S. military, or "a verifiable out-of-state plumbing license" that is current and in good standing. Applicants for a contractor licence "must meet the same requirements as a journeyman with an additional one (1) year of lawful experience in the Plumbing trade."

Oklahoma experience only counts if it was registered. The application quotes rule 158:30-9-1(j) to the effect that unlicensed applicants who wish to include Oklahoma experience "must maintain an apprentice registration on file with the Oklahoma Construction Industries Board for all experience obtained in Oklahoma", and that the Board "will not consider experience obtained in or outside of Oklahoma as verifiable experience for periods in which an apprentice is unregistered", except where lawfully obtained under federal or state law. If you are working toward a licence, register the apprenticeship first and renew it every twelve months.

Schooling shortens the clock on a published scale. A Committee-approved plumbing programme of at least 1,000 classroom hours substitutes for two years of experience, 500 hours for one year, 375 hours for nine months, 334 hours for eight months and 250 hours for six months. The fees are printed on the same document: $330.00 total for a Plumbing Contractor or Residential Plumbing Contractor, made up of a $300.00 licence fee plus a $30.00 application processing fee, and $75.00 total for a journeyman, made up of $50.00 plus $25.00. Contractors sit two exams, the Oklahoma Plumbing exam and the Plumbing Business and Law exam, and "An examinee must make 75% or more on each part, above, to pass".

Official sources: Oklahoma CIB: Plumbing Application Information (PDF); Oklahoma CIB: Plumbing Contractor; Oklahoma CIB: Plumbing industry

Electrical and mechanical: hours, categories and who has to be an owner

Electrical is counted in hours and split three ways. The CIB states that an Unlimited Electrical Contractor must have 12,000 verifiable hours of on-the-job experience in electrical construction work, proof of 4,000 hours as a licensed Unlimited Electrical Journeyman, 6,000 hours in commercial industrial work obtained while employed by a licensed electrical contractor, and no more than 2,000 hours satisfied by formal electrical education. A Residential Electrical Contractor, "limited to contracting for wiring buildings as defined in the NEC for one and two family dwellings", needs 8,000 verifiable hours total, 4,000 of them as a residential or unlimited journeyman under an electrical contractor and 4,000 as a registered apprentice, or 3,000 as an apprentice plus 1,000 from formal education. A Limited Electrical Contractor is a different animal: it requires an electrical engineering degree plus 8,000 hours of field construction, estimating or project management in commercial and industrial electrical work, or 16,000 hours of verified experience without the degree, and the holder is "prohibited from engaging in the work of an apprentice or journeyman electrician".

The Board also states that "All Electrical Contractors must be an Owner, Partner, or Officer in the electrical firm", and on the mechanical side that all mechanical contractors "must be a permanent employee, owner, partner or officer in the mechanical firm". If your plan is to hire a licensed contractor as an ordinary employee and run the company yourself, check that structure against these sentences before you commit.

Mechanical is licensed by category rather than by tier alone. The CIB lists an HVAC/R Unlimited Contractor licence, an HVAC/R Limited Contractor licence capped at cooling capacity "of no more than twenty-five (25) tons" and heating equipment "of no more than 500,000 Btu/h per appliance", plus Refrigeration, Natural Gas Piping, Process Piping, Sheet Metal and Ground Source Piping contractor licences. Ground Source Piping requires proof of certification from a Committee-approved organisation and the Board states "No exam required." A mechanical contractor applicant must meet the journeyman requirements "with an additional one (1) year of experience in the mechanical trade".

One boundary question the Board answers directly, because it comes up constantly: for radiant-floor heating, "A Mechanical HVAC or a Plumbing license is allowed to install in residential homes only. Installation in a commercial building requires a Mechanical HVAC license, and if more than 500,000 Btu/h per appliance then the Mechanical HVAC license must be an Unlimited license."

Official sources: Oklahoma CIB: Electrical Contractor; Oklahoma CIB: Mechanical Contractor; Oklahoma Construction Industries Board: Frequently Asked Questions; Oklahoma CIB: Mechanical industry

Roofing: registration, endorsements and a deadline already on the calendar

Roofing sits outside the licence ladder entirely. The Roofing Contractor Registration Act provides that "All roofing contractors shall be registered annually by the Board" and that "It is unlawful for any person to act as a roofing contractor without having a current and valid roofing contractor's registration or act as a commercial roofing contractor without a current and valid commercial roofer endorsement". The CIB adds that failure to register "is a misdemeanor punishable by a fine of up to $500.00, which would be initiated by the district attorney's office having jurisdiction".

The money and the timing are set in statute. The registration fee is seventy-five dollars for the annual registration certificate, the annual renewal is also seventy-five dollars, the endorsement fee is "established as up to Two Hundred Dollars ($200.00)" with renewal at one hundred dollars, and endorsements renewed more than thirty days after expiry require an additional late renewal fee of one hundred dollars. Registrations expire "on the last day in the birth month of the qualifying party", and the registrar "shall either issue or deny the roofing contractor registration" within twenty-five calendar days of application. Insurance minimums are not less than $500,000 for residential roofing work and not less than $1,000,000 for commercial, with the CIB listed as certificate holder.

A change is already scheduled and it will catch roofers who are not watching. The CIB states that House Bill 1628 created a new Residential Roofing Endorsement, that Senate Bill 1873 "moved the start date for the transition period to January 1, 2027, and extended the deadline for roofers to obtain the residential endorsement to January 1, 2028", and that "Beginning January 1, 2028, the Residential Roofing Endorsement will be required to offer to engage in or engage in residential roofing work for all residential roofing projects." Anyone registered and in good standing on or before January 1, 2027 is eligible to be grandfathered, but must apply, pay the fee and either complete ten hours of approved continuing education or pass the examination. The statute as published by the CIB carries the same dates, so the two sources agree.

Two related changes land on the same date. The Board states that beginning January 1, 2027 "it will be unlawful for a roofing contractor to subcontract with an unregistered labor-only crew", with citations available to all parties involved, and that beginning January 1, 2028 labor-only crews "must work directly for a roofing contractor who holds a Residential Roofing Endorsement" and must keep proof of that on the job site. Separately, the Act already provides that labor-only crews installing asphalt, tile, synthetic shake or wood shake on a sloped roof "must be registered but are not required to have a commercial endorsement".

Official sources: Oklahoma Roofing Contractor Registration Act, Title 59 (PDF, published by the CIB); Oklahoma CIB: Active Roofing Contractor Requirements; Oklahoma CIB: New Residential Roofing Endorsement Required by House Bill 1628

Going active, staying active, and keeping the credential clean

For the licensed trades, the last step is the one people forget to budget. The CIB states that after the exams "your license will be inactive until the CIB receives proof of the bond and insurance", being a $5,000.00 corporate surety bond payable to the Board with original signatures, seals and Power of Attorney attached, and a minimum of $50,000.00 commercial general liability insurance with the Board as certificate holder. The Board warns that "Failure to keep current insurance will cause your license to become inactive" and that "It is a violation to contract for services without current insurance and an active license."

Continuing education differs by trade and it is easy to apply the wrong number. Plumbing and mechanical journeymen and contractors are "required to have received six (6) hours of continuing education within the preceding thirty-six (36) months of their license expiration". Electrical journeymen and contractors "must complete twelve (12) hours of continuing education every three (3) years or thirty-six (36) months", of which six hours must be a code update on codes adopted by the Oklahoma Uniform Building Code Commission. Electrical apprentices need three hours every year before re-registering. Commercial roofing qualifying parties complete four hours every thirty-six months, and the CIB has stated that under HB 3800 "Commercial roofers are now required to complete 4 hours of continuing education annually to renew their Commercial Endorsement", with a further four-hour annual requirement attaching to the residential endorsement from January 1, 2028.

Reciprocity exists but is narrow, and the Board states the three conditions: "Your state must have a written reciprocity agreement with Oklahoma"; "You must have a current license, in good standing for at least one (1) year with your state, and be current in your CEU requirements"; and you must submit a complete application with work history and fees, including the Affidavit of Experience and the Work History. The Board asks applicants not to call about status until more than thirty days have passed. It publishes a specific Arkansas plumbing reciprocity agreement.

Official sources: Oklahoma CIB: Active Contractor Requirements; Oklahoma Construction Industries Board: Frequently Asked Questions; Oklahoma CIB: Plumbing industry; Oklahoma CIB: Mechanical industry; Oklahoma CIB: Electrical industry; Oklahoma CIB: New Residential Roofing Endorsement Required by House Bill 1628

Check the official page yourself before you file, bid or sign

Oklahoma splits contractor rules across at least five agencies: the Construction Industries Board for the regulated trades, the Department of Labor for alarm, fire sprinkler, elevator, boiler, welding and asbestos, the Secretary of State for the entity, the Tax Commission for permits and returns, and the Employment Security Commission for unemployment insurance. Add your own city on top of all of it. No single page carries the whole picture, and each one changes on its own schedule.

Before you send an application fee, sign a contract or hire anyone, open the specific page for your trade, confirm the requirement, and keep a dated copy of what you read. The Construction Industries Board is at 2401 NW 23rd Street, Suite 2F, Oklahoma City, OK 73107, and its plumbing application publishes a phone line of (405) 521-6550 or toll free 1-877-484-4424. That same application warns that "If the applicant fails to meet the minimum qualifications to take the examination, the application fee will be forfeited." A ten-minute call is cheaper than a forfeited fee.

Official sources: Oklahoma Construction Industries Board: Frequently Asked Questions; Oklahoma CIB: Plumbing Application Information (PDF); Oklahoma Department of Labor: Licensing