Contractor licensing

Oklahoma contractor license requirements

Oklahoma does not license general contractors at the state level. The Construction Industries Board (CIB) licenses electrical, mechanical, and plumbing work and registers roofers, and a new residential roofing endorsement phases in through January 1, 2028.

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Keep plans, permit requirements and approvals together when preparing construction work. AI-generated illustration.

If you run a general contracting company in Oklahoma, there is no state general contractor license to apply for. The Oklahoma Construction Industries Board says plainly that general contractors are not currently required to hold a state license for general contracting. That does not mean anyone can do anything. The trades are where the state draws its lines: electrical, mechanical, and plumbing contractors need CIB licenses, roofers need a CIB registration, and cities can add their own rules on top.

Oklahoma contractor licensing at a glance
ItemRule
State general contractor licenseNone. Check the city or county where the job is located.
State agencyOklahoma Construction Industries Board (CIB), Oklahoma City
Trades licensed or registered by CIBElectrical, mechanical, plumbing, roofing, building inspectors, home inspectors
Plumbing contractor fee$330 ($300 license plus $30 application processing)
Electrical, mechanical, plumbing contractor bond$5,000 corporate surety bond payable to the CIB
Electrical, mechanical, plumbing contractor insuranceAt least $50,000 commercial general liability
Roofing registration$75 initial or renewal, $500,000 general liability minimum
Commercial roofing endorsement$230 initial, $100 renewal, $1,000,000 general liability, PSI exam
Residential roofing endorsementRequired for residential roofing starting January 1, 2028
License lookupCIB licensee search and separate roofing registration search

No state general contractor license, so what applies?

A GC building a $480,000 tenant improvement in Tulsa does not need a state license to sign the prime contract. The electrician, the HVAC sub, and the plumber on that job do. So does the roofer. If your own crews self-perform any of that trade work, someone in your company has to hold the matching CIB license, or you have to sub the scope to a licensed firm.

The CIB also tells contractors to contact local jurisdictions about local requirements. Cities issue building permits, and many tie permit eligibility to their own registration, bonding, or insurance rules. Call the permit office before you bid in a new town, not after you win the job. For the paper side of permits, see how to handle permits for residential jobs.

Electrical, mechanical, and plumbing contractor licenses

These three trades follow the same basic ladder: registered apprentice, then journeyman, then contractor. The plumbing application spells out the numbers, and it is a good model for how CIB thinks about all three.

  • Age: all plumbing applicants must be 18 or older.
  • Journeyman experience: three years in the plumbing trade while employed by a licensed plumbing contractor, three equivalent years in the U.S. military, or a current out-of-state license in good standing that may expedite processing.
  • Contractor experience: the journeyman requirements plus one more year of lawful plumbing experience.
  • School credit: an approved program of 1,000 classroom hours can replace two years of experience, and shorter approved programs replace smaller amounts.
  • Apprentice registration matters: CIB will not count experience from periods when an apprentice was unregistered, except experience lawfully gained under other federal or state laws.
  • Exams: a trade exam for everyone, plus a Business and Law exam for contractors, given by PSI. You need 75 percent or more on each part. After a first failure you wait 30 days to retest, and 90 days after later failures.
  • Fees: $330 for a plumbing contractor or residential plumbing contractor, $75 for a journeyman.

Passing the exam does not let you start work. The license stays inactive until CIB receives proof of a $5,000 corporate surety bond and a certificate showing at least $50,000 in commercial general liability coverage. Both must be in the individual license holder's name, with CIB as the certificate holder. The bond must be continuous with 30 days' cancellation notice. If the insurance lapses, the license goes back to inactive, and contracting without current insurance and an active license is a violation.

Two rules catch new shops off guard. Your firm name and license number (with "OK" in front of the number) must appear on both sides of your work vehicles in letters at least 2 inches high, and the license number must appear on all advertising, contracts, and bids. And the apprentice ratio is 3 apprentices to 1 contractor in electrical, mechanical, and plumbing.

Roofing registration and endorsements

Under the Roofing Contractor Registration Act, resident and nonresident roofers must hold a CIB registration before they offer or perform roofing work. Doing roofing without it is a misdemeanor with a fine of up to $500. Registration and any endorsement renew every year.

  • Registration: $75 initial, $75 renewal, with a $100 late fee if renewal is 31 to 60 days overdue. Show at least $500,000 in general liability with CIB as certificate holder, plus workers' compensation coverage or an exemption.
  • Commercial endorsement: required for commercial roofing that is not exempt. You need a registration in good standing, at least $1,000,000 in commercial general liability, workers' compensation, and a passing score on the PSI commercial roofing exam, which has a technical trade part and a business and law part. The fee is $230 initial (including the application fee) and $100 to renew.
  • Inactive commercial endorsement: can be held inactive, with annual renewal and continuing education but no insurance requirement while inactive.

The new residential roofing endorsement

House Bill 1628 became law May 28, 2025 and created a Residential Roofing Endorsement. CIB's June 2026 notice lays out the phase-in. Starting July 1, 2026, CIB stopped giving residential roofers first-time warnings. On January 1, 2027, the grandfathering window opens and enforcement begins, including citations for subcontracting to unregistered labor-only crews. On January 1, 2028, the endorsement becomes mandatory to offer or perform residential roofing, and labor-only crews must work directly for an endorsed roofing contractor and carry proof on site.

Roofers registered and in good standing on or before January 1, 2027 can be grandfathered by applying between January 1, 2027 and January 1, 2028 and completing 10 hours of CIB-approved continuing education or passing the residential test. Roofers who held a commercial endorsement before January 1, 2027 get the residential endorsement without extra CE or testing if they apply in time. After 2028, new applicants take a PSI exam with a 70 percent passing score. The fee is $230 initial and $100 renewal, and renewal requires 4 hours of CE per year (8 hours if you hold both endorsements).

How to look up an Oklahoma contractor license

CIB runs two searches. Roofing registrations have their own search tool. Electrical, mechanical, plumbing, building inspector, and home inspector licensees share a second licensee search. Both are linked from the CIB's "Are They Licensed?" page. Since general contractors have no state license, there is nothing at the state level to look up for a GC; ask for local registrations, insurance certificates, and references instead.

Keeping licenses and paperwork current

The failure that hurts most in Oklahoma is not a missing license. It is a lapsed certificate of insurance that quietly flips a license to inactive while crews keep working. Calendar every renewal and policy expiration, and send the new certificate to CIB after each renewal. If you carry subs, track their licenses and certificates on the same schedule, and read up on what a subcontractor COI should include.

Licensing is only one of the state rules that touch your cash. Oklahoma lien deadlines are covered in Oklahoma mechanics lien rules, and payment timing in Oklahoma prompt payment rules. Smart Business Automator keeps subcontractor licenses, insurance certificates, and expiration dates in one place and flags what is about to lapse; see subcontractor compliance automation.

Frequently asked questions

Do you need a license to be a general contractor in Oklahoma?

Not from the state. The CIB says general contractors are not currently required to have a state license for general contracting. Trade work still needs CIB licenses or registration, and cities may have their own requirements.

How do I check if an Oklahoma contractor is licensed?

Use the CIB licensee search for electrical, mechanical, plumbing, and inspector licenses, and the separate CIB roofing search for roofers. Both are linked from the CIB "Are They Licensed?" page.

What bond and insurance does an Oklahoma plumbing, electrical, or mechanical contractor need?

A $5,000 corporate surety bond payable to the Construction Industries Board and at least $50,000 in commercial general liability insurance, both in the license holder's name. The license stays inactive until CIB has proof of both.

Do roofers need a license in Oklahoma?

Roofers need a CIB roofing registration, with at least $500,000 in general liability. Commercial work needs a commercial endorsement with $1,000,000 in coverage and an exam. A residential roofing endorsement becomes required for residential work on January 1, 2028.

How long does it take to qualify for an Oklahoma plumbing contractor license?

The journeyman route takes three years of experience under a licensed plumbing contractor, and the contractor license needs one additional year, so four years in total unless approved schooling or military experience substitutes for part of it.

Sources

  1. Oklahoma Construction Industries Board: home page and general contractor statement
  2. Oklahoma CIB: Are They Licensed? (license lookup)
  3. Oklahoma CIB: Active contractor requirements (bond, insurance, vehicle display)
  4. Oklahoma CIB: Plumbing application information
  5. Oklahoma CIB: Active roofing contractor requirements
  6. Oklahoma CIB: Roofing contractor registration and commercial endorsement application
  7. Oklahoma CIB: New residential roofing endorsement required by House Bill 1628

Laws and rates change. Confirm current requirements with the state agency before you bid, file, or pay. This page is general information, not legal advice.

Written and edited by

Maurice Francois writes and edits construction operations guides for Smart Business Automator. More from Maurice on the Scaling Legends podcast.

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