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Ohio does not license general contractors at the state level. Instead, the Ohio Construction Industry Licensing Board (OCILB) licenses five commercial trades — electrical, plumbing, HVAC, hydronics, and refrigeration — through a unified exam-and-experience system. Highway work runs through a separate ODOT prequalification gate, and asbestos and lead abatement each have their own dedicated agencies.
Always verify statutes, fees, and application details with the live regulator before making bidding, licensing, or legal decisions.

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At a glance

The fastest way to orient yourself in Ohio is to understand that there is no general contractor license — the state regulates specific trades and highway access separately.

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Frequently asked questions

Pick the tab that matches your situation. Each FAQ gives a direct answer and points you to the full detail below.
Ohio licenses five commercial trades through the OCILB: electrical, plumbing, HVAC, hydronics, and refrigeration. All applicants must pass business law and trade exams (70% minimum), document five years of experience, and carry $500,000 in liability insurance. There is no general contractor license. See Requirements.
An OCILB state license eliminates the need for multiple testing when applying for licensing in more than one city. Local jurisdictions may still have permit requirements, but the state license serves as a unified trade credential accepted statewide. See Construction work regulated.
ODOT prequalification depends on contract size. Projects under $5,000,000 require a CPA reviewed financial statement. Projects of $5,000,000 or more require a CPA audited financial statement. Subcontractors performing more than $800,000 per calendar year need their own certificate of qualification. See Requirements.
Ohio has five separate agencies. OCILB handles commercial trade licensing. ODOT handles highway prequalification. Ohio EPA handles asbestos abatement. Ohio Department of Health handles lead abatement. The Facilities Construction Commission handles non-highway public works. See Who regulates construction.
The initial fee is $25, the issue fee is $25, and the annual renewal is $60. All five OCILB trades share the same fee structure. Background check fees (Ohio BCI and FBI) are additional. Application processing takes approximately 90 days. See Requirements.
OCILB offers trade-specific reciprocity with 10 states. You must hold a current license from a reciprocal state and complete an Ohio refresher course in your second year of licensure. Some states also require Ohio’s business and law exam. Asbestos and lead programs have no reciprocity. See Reciprocal agreements.
All OCILB applicants must carry $500,000 in contractor liability coverage. This applies to all five trades — electrical, plumbing, HVAC, hydronics, and refrigeration. See Requirements.
Ohio does not license general residential contractors at the state level. However, trade-specific work (electrical, plumbing, HVAC) on residential projects still requires appropriate OCILB credentials. Check local municipality requirements for general residential construction permits.
Roofing is not separately licensed at the state level in Ohio. OCILB covers only electrical, plumbing, HVAC, hydronics, and refrigeration. Check local municipalities for any roofing-specific licensing requirements.
Highway subcontractors performing more than $800,000 of work per calendar year must obtain a certificate of qualification from ODOT. Prime contractors may use unqualified subs only if their collective compensation stays below 15% of the bid or $2,000,000 per project. See Requirements.

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Start with your goal

Pick the card that matches what you need right now. Each one links to the relevant section on this page.

Is licensure triggered?

Start with work type — Ohio licenses specific trades, not general contractors.

Find the right regulator

Use the regulator directory to route your question to the correct Ohio agency.

Application and renewal details

Exams, fees, bonds, insurance, and renewal cycles for each trade and program.

Reciprocity direction

OCILB recognizes 10 states for trade-specific reciprocity. Asbestos and lead have none.

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Special considerations

Different roles need different things from an Ohio page. Use the tab that matches your situation to see what matters most before you read the full detail below.
Ohio has no general contractor license. Start by confirming whether your trade requires an OCILB license or whether your project is highway, asbestos, or lead work.
  • OCILB licenses five commercial trades: electrical, plumbing, HVAC, hydronics, and refrigeration.
  • All OCILB applicants must pass business law and trade exams (70% minimum), document five years of experience, and carry $500,000 in liability insurance.
  • Highway prime contractors need ODOT prequalification — financial statement requirements scale at the $5,000,000 threshold.
  • Highway subcontractors performing more than $800,000 per year must obtain a certificate of qualification.
  • Reciprocity is available through OCILB for master contractors from 10 states, but you must take an Ohio refresher course in your second year.

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Readiness checklist

Five things you need to confirm before you can treat Ohio as “ready” for a bid or an application. If any of these are unclear, you are not ready yet.

Identify the work lane

Determine whether the project is a commercial trade (OCILB), highway (ODOT), asbestos (EPA), lead (Health), or other public works (OFCC).

Confirm the trade or prequalification gate

For OCILB trades, confirm you meet the exam, experience, and $500,000 insurance requirements. For highway work, check whether you need reviewed or audited financials at the $5,000,000 threshold.

Route to the correct agency

Ohio has five separate agencies. Use the regulator directory below — there is no single statewide contractor board.

Check reciprocity eligibility

OCILB offers trade-specific reciprocity from 10 states. Asbestos and lead programs have none.

Confirm the requirement set

Verify exams, experience, fees, bond or insurance, renewal cycle, and any refresher-course obligations for the exact agency before filing.
If you can identify work lane, trade or prequalification gate, agency, reciprocity status, and requirement set, you have the minimum package needed for an Ohio readiness check.
Use these links to jump to related cross-state comparisons and workflows.

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Construction work regulated

Ohio does not have a dollar threshold that triggers a general contractor license. Instead, regulation is organized by work type and agency.
The OCILB state license eliminates the need for multiple testing when applying for licensing in more than one city. Local jurisdictions may still have their own permit requirements.

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Common determination scenarios

If you are trying to figure out where to start, expand the scenario that is closest to your situation.
Route to the OCILB. You will need to pass business law and trade exams (70% minimum), document five years of experience, and carry $500,000 in liability insurance. Application processing averages 90 days.
Route to ODOT. Prequalification depends on the dollar amount — reviewed financials under $5,000,000, audited financials at $5,000,000 or more. All contractors must have work-type qualifications. Subcontractors performing more than $800,000 per calendar year need their own certificate of qualification.
Route to the Ohio EPA Asbestos Program. Contractor licensing costs $750 per year. Individual certifications range from $50 to $200 depending on discipline. No reciprocity is available — out-of-state training is accepted only if it meets USEPA Model Accreditation Plan requirements.
Route to the Ohio Department of Health. Lead licenses are issued to individuals, not businesses. Biennial fees range from $50 to $500. A one-time “reciprocity license” is available for out-of-state licensed individuals, valid for two years only — it cannot be renewed unless you complete an Ohio refresher course.
Only the OCILB offers reciprocity, and it is trade-specific across 10 states. You must hold a current license from a reciprocal state and take an Ohio refresher course in your second year of licensure. Asbestos and lead programs do not offer reciprocity.

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Who regulates construction

Ohio splits construction regulation across five separate agencies. Each one owns a distinct work lane. Use this directory to find the right contact.
1980 West Broad Street, Mail Stop 4110, Columbus, OH 43223Phone: (614) 466-2314Website: transportation.ohio.gov
6606 Tussing Road, P.O. Box 4009, Reynoldsburg, OH 43068Phone: (614) 644-3493 | Fax: (614) 728-1200Website: com.ohio.gov/dico/ocilb
50 West Town Street, Suite 700, Columbus, OH 43215Phone: (614) 644-0226Email: asbestoslicensing@epa.ohio.govWebsite: epa.ohio.gov/dapc/atu/asbestos
246 North High Street, 35 Bldg., 7th Floor, Columbus, OH 43215Phone: (614) 466-1450 | Fax: (614) 564-2481Website: odh.ohio.gov
30 West Spring Street, 4th Floor, Columbus, OH 43215Phone: (614) 466-6290Website: ofcc.ohio.gov

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Requirements

Each Ohio agency has its own application inputs, exams, fees, and renewal cycles. Expand the category that applies to your situation.

OCILB Commercial Trade Contractors

All five OCILB trades — electrical, plumbing, HVAC, hydronics, and refrigeration — share the same fee structure and core requirements.
Board approval is valid for one year. If you have not completed the background check and exams within that window, you must reapply.
Lead licenses are issued to individuals, not business entities. All training must come from an Ohio-approved provider per OAC 3701-32.
Initial applicants for Lead Risk Assessor, Lead Abatement Contractor, and Lead Project Designer must also submit documentation of experience in the applicable discipline.

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Reciprocal agreements

Ohio’s reciprocity picture is split. The OCILB offers trade-specific reciprocity with 10 states for master contractors. The asbestos and lead abatement programs have no reciprocity.
OCILB reciprocity requires presenting your current out-of-state license and completing an Ohio refresher course in your second year of licensure. All states except Tennessee reciprocate with tested contractors only. South Carolina, Louisiana, Mississippi, and Tennessee applicants must also take Ohio’s business and law exam.
  • Asbestos: Ohio has no reciprocal agreements for asbestos licenses or certifications. Contractors and individuals must obtain Ohio-specific credentials. However, out-of-state training is accepted if it meets USEPA Model Accreditation Plan requirements and comes from a USEPA- or state-approved provider.
  • Lead: ODH does not accept out-of-state lead training courses. A one-time “reciprocity license” is available — submit an application with your current out-of-state license, refresher certificate, photo, and fees. This license is valid for two years and cannot be renewed unless you complete a refresher course from an ODH-approved Ohio training provider.

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Types of licenses

Ohio’s credential categories span three independent programs. Use this section to confirm the exact license name for an application or comparison.
  • Electrical Contractor
  • Plumbing Contractor
  • Heating, Ventilation and Air Conditioning (HVAC) Contractor
  • Hydronics Contractor
  • Refrigeration Contractor
  • Asbestos Hazard Abatement Contractor
  • Asbestos Hazard Abatement Worker
  • Asbestos Hazard Abatement Specialist
  • Asbestos Hazard Evaluation Specialist
  • Asbestos Hazard Project Designer
  • Asbestos Hazard Abatement Air Monitoring Technician
  • Lead Abatement Contractor
  • Lead Abatement Project Designer
  • Lead Inspector
  • Lead Risk Assessor
  • Clearance Technician
  • Lead Abatement Worker

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See also

Midwest region guide

Browse all Midwest jurisdictions for comparison.

Contractors guide

Cross-state guidance for contractors evaluating new jurisdictions.

Regulators guide

Cross-state guidance for comparing regulatory models and agency structures.
Neighboring jurisdictions with reciprocity ties:

Kentucky

OCILB reciprocity for electrical, HVAC, and refrigeration contractors.

West Virginia

OCILB reciprocity for electrical, HVAC, and plumbing contractors.

Tennessee

OCILB reciprocity across five trades — Ohio’s broadest reciprocity partner.