GC Laws — Oklahoma contractor-law checklist preview (free) Sources reviewed 2026-09-30. Public summaries remain free on gclaws.com. [ ] Licensing - CIB regulates electrical, plumbing and mechanical licensing, inspections, home inspection, and roofing registration under the respective Acts; the absence of a general-contractor license does not authorize regulated trade work. - CIB’s current agency page explicitly states that general contractors are not required to hold a state license for general contracting. [ ] Mechanic's liens - Under §142, an original contractor files the verified lien statement with the county clerk within four months after last furnishing; §143 gives covered lower-tier claimants 90 days after last furnishing under their subcontract. - Section 142.6 generally requires non-original claimants to send pre-lien notice to the owner and original contractor before filing and within 75 days after last furnishing. Exceptions include agreed retainage, claims below $10,000 and qualifying non-owner-occupied residential projects of four or fewer units; the owner-occupied-dwelling rule overrides the monetary/residential exceptions. - Section 172 requires a lien-enforcement action within one year after filing. [ ] Retainage - Section 226(A) reduces prime retainage to 2.5% of the amount earned to date after more than 50% of the total contract amount is completed and satisfactory progress is determined. For subcontracts, §226(B) reduces retainage to 2.5% of the original subcontract amount once work is determined at least 50% complete. - Under §226(C), release is due within 21 calendar days after a substantial-completion certificate for the project or usable phase, subject to adequate performance and applicable surety approval. Up to 150% of identified incomplete/defective-work costs may remain; release the rest as deficiencies are completed. - Prime contractors pass released retainage down within 10 days; other entities within seven days. Section 113.1 separately prohibits ODOT and Turnpike Authority prime-contract retainage. [ ] Prompt payment - Section 223 requires owner progress payments within 30 calendar days after submission of a proper invoice for work performed and properly stored materials. - For compliant work, §224 requires prime-to-subcontractor/supplier payment within 10 calendar days after corresponding receipt; subcontractor-to-lower-tier payment is due within seven calendar days. [ ] Prevailing wage - ODOT’s current contractor-compliance guidance requires covered Davis-Bacon contractors and subcontractors to pay applicable prevailing wages and fringe benefits and explains payroll compliance. Use the project’s wage determination. [ ] Davis-Bacon (federal) - Under 40 U.S.C. section 3142, covered contracts require payment to laborers and mechanics employed directly on the site of the work at least weekly, at rates no lower than the applicable prevailing wage determination. The required compensation includes the basic hourly rate and required fringe benefits, which may be provided through qualifying benefits or cash as the statute permits. - Qualifying apprentices may receive a lower registered-program rate only when the applicable registration and program conditions are met. The Department of Labor’s apprenticeship rules govern those exceptions. - The Department of Labor determines the prevailing rates for the work classifications and locality. Contractors and subcontractors must use the wage determination applicable to their covered contract. - Federal assistance alone does not establish coverage: many, but not all, construction-assistance statutes include Davis-Bacon requirements. Identify the funding program and its governing Related Act. - SAM.gov publishes Davis-Bacon wage determinations. Search by the wage-determination number or the Davis-Bacon public-buildings-or-works category, and match the decision to the contract, locality, and work classification. This preview lists the topics and rules covered in the full state pack. The paid pack adds the complete source URLs, citations, review dates, and the three editable tools. GC Laws is owned and operated by GCExperts LLC, a Texas corporation.