GC Laws — Idaho contractor-law checklist preview (free) Sources reviewed 2026-09-30. Public summaries remain free on gclaws.com. [ ] Licensing - Section 54-5204 requires registration for covered contractor practice, subject to the chapter’s exemptions. - The casual, minor or inconsequential-project exemption requires an aggregate price below $2,000, including labor, materials and other items. It does not cover part of a larger project or divided contracts intended to evade registration; the chapter also has separate occupational and other exemptions. [ ] Mechanic's liens - Record the verified claim with the county recorder within 90 days after the claimant completes or ceases the covered labor or professional services, or ceases furnishing materials. The claim must give the credited amount, owner if known, contracting party and an identifying property description, and include the disclosure proof required by §45-525 when applicable. - Serve a copy on the owner or reputed owner personally or by certified mail within five business days after filing. [ ] Retainage - When a public body requires a performance bond or a payment bond exceeding 50% of the contract amount, it may withhold no more than 5% of the total payable as retainage. It must release retainage for portions accepted by the public body and contractor as complete within 30 days of that acceptance. - A public-work contractor may withhold no more than 5% of the amount payable to a subcontractor and must remit that retainage within 30 days after completion of the subcontract. [ ] Prompt payment - Idaho Code §67-2302 generally requires state departments and taxing districts to pay within 60 calendar days after receiving the billing, unless a contract in place when ordered expressly allows longer. Usable partial-delivery billing generally has a 45-day period. The section expressly covers construction, repair and remodeling. Disputed bills, contract terms and applicable exceptions can change the analysis; statutory interest uses the referenced tax-code rate rather than one permanent percentage. - When payment depends on receipt of federal funds or federal approval, §67-2302(19) requires the bid solicitation and contract to state that contingency. [ ] Prevailing wage - ITD’s Contract Administration Manual, section 112.00, requires prevailing Davis-Bacon wage and fringe-benefit rates for covered site laborers and mechanics and weekly certified payroll submissions under the federal contract provisions. - ITD’s current certified-payroll page announces eComply for federally funded District 1 projects starting October 1, 2026, with other districts following in phases. Project pre-construction coordination determines use during the rollout; the future launch is not represented as already effective on September 30. [ ] 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.