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Ohio Contractor License: There Is No State General Contractor License, Here Is What Applies

Ohio Contractor License: There Is No State General Contractor License, Here Is What Applies

Searching for an Ohio contractor license usually means looking for one state credential that covers general construction work. Ohio does not issue one. There is no statewide general contractor license, no statewide roofing license, and no statewide residential-only license. What you need depends on the trades you perform, the buildings you work on, and the cities and counties where you work.

This guide covers the Ohio Construction Industry Licensing Board (OCILB) and the trades it licenses, the local registrations that often apply instead, the written contract rules for residential home improvement work, and the business filings every contractor handles. It is informational content, not legal or tax advice. Confirm each requirement with the agency named before you bid or sign a contract.

What Ohio does not require

Before you search further, rule out the requirements that do not exist:

  • A state general business license. Ohio issues no single general state business license. The Department of Taxation explains that the licenses a business needs depend on its type of business and come from state agencies as well as the county or city.
  • A county business license. Counties issue no general business license. The county-level registration most businesses encounter is the sales tax vendor's license, which the county auditor issues under a state statute.
  • A statewide general contractor license. No state credential covers general contracting as a whole.
  • A statewide roofing or residential-only license. Ohio does not license roofing or residential-only work at the state level.

That does not mean you can start work without checking. The state trade license described below and the local rules in your city or county still apply.

The state license that does exist: OCILB

The OCILB licenses commercial electrical, plumbing, HVAC, hydronics and refrigeration contractors under Ohio Revised Code (ORC) Chapter 4740. If your business performs those trades on commercial work, this is the state credential to check first.

The OCILB sunset: confirm before you rely on it

The OCILB's licensing functions are scheduled to expire on December 31, 2026 under ORC 101.62 unless they are renewed. House Bill 59 of the 136th General Assembly would renew them for six years. It passed the Ohio House 91-0 on November 19, 2025 and was pending in the Senate as of spring 2026. This guide does not confirm whether it has become law since then. Check com.ohio.gov for the current status before you sign a contract, renew a license, or plan work that runs past the end of 2026.

If the sunset takes effect, ask OCILB how existing licenses and renewals will be handled before you make commitments that extend beyond that date.

Which credential covers which work

WorkStatewide licenseWhat to check
Commercial electrical, plumbing, HVAC, hydronics, refrigerationOCILB, ORC Chapter 4740Current status at com.ohio.gov and local rules
Residential work in those tradesNot confirmed in this guideAsk OCILB and your local building department which credential applies
General contractingNoneLocal registration and permits
RoofingNone statewideLocal registration, permits, and the residential contract rules below
Residential home improvementNone statewideORC Chapter 4722 contract rules and local registration

Local registration: the step most contractors miss

Many cities and counties register or license contractors on their own. Requirements, fees, bonding, and insurance rules differ from one jurisdiction to the next, so the local answer often matters more than the state answer. Start with the building or zoning office in the city where the job is located. Ask four questions:

  1. Does this city or county register general contractors or specific trades?
  2. What insurance certificate or bond must I file?
  3. Which permits does this scope of work require?
  4. Does the city tax business net profit, and at what rate?

Cities and villages tax business net profit under their own rates, so get the figure from the tax office for each place you work. Do not assume the rate in one city applies in the next.

Residential home improvement: the written contract rules

If you do residential home improvement work, the most important state rules are in the Home Construction Service Suppliers law, ORC Chapter 4722. For residential work on one-to-three family homes where the job is $25,000 or more, the written contract must include:

  • Your business details and the owner's details.
  • Start and finish dates.
  • The total estimated cost.
  • Proof of at least $250,000 in general liability insurance.

Separately, you must give notice when unforeseen costs go above $5,000. Cost-plus contracts are exempt from that notice rule. Have an attorney confirm how the exemption fits your contract template before you rely on it.

The Ohio Consumer Sales Practices Act, ORC Chapter 1345, also applies to these consumer transactions. Clear written terms on scope, price, and timing help you on both fronts.

Business filings and tax items every contractor handles

Licensing is separate from forming the business. Most contractors also need the following, all handled through the Ohio Secretary of State or the Department of Taxation.

  • Entity formation. Articles of Organization for a domestic LLC (Form 610) carry a $99 filing fee. Ohio LLCs file no annual report. Corporations file Initial Articles of Incorporation (Form 532A) for the same $99. Filing online through Ohio Business Central is the fastest standard route, with regular service taking 3 to 7 business days from receipt.
  • Trade names. If you bid or invoice under a name other than your legal name, register it with the Secretary of State, not the county. Registration costs $39. Reserving a name for 180 days also costs $39.
  • Workers' compensation. Buy coverage from the state fund administered by the Bureau of Workers' Compensation (BWC). Confirm with BWC what your payroll requires.
  • Sales tax vendor's license. Every Ohio retailer selling taxable goods or services must obtain one before making taxable sales. The county vendor's license application fee is $50 as of April 9, 2025. Whether a particular contract involves taxable sales is a question for the Department of Taxation.
  • Commercial Activity Tax (CAT). Ohio has no corporate income tax and no LLC annual tax. The CAT is a gross receipts tax of 0.26%. For tax year 2025 and later, only businesses with more than $6 million of Ohio taxable gross receipts owe it or must register. CAT returns are filed quarterly.

Common mistakes to avoid

  • Assuming a state license covers you. Most general and residential work has no state license, so the local office is where the real requirements usually sit.
  • Skipping local registration because the job is small. Local rules often apply to the scope of work, not the dollar value alone. Check before you start.
  • Filing a trade name with the county. Trade names go to the Secretary of State.
  • Ignoring the OCILB sunset. A credential you rely on today may depend on whether the renewal passes. Check the status before you commit to multi-year work.
  • Using a loose residential contract. A handshake or a short invoice does not meet the ORC Chapter 4722 requirements for a job of $25,000 or more.

A practical sequence

  1. List every trade you perform and whether each job is commercial or residential.
  2. For commercial electrical, plumbing, HVAC, hydronics or refrigeration, check OCILB status at com.ohio.gov, including the sunset question.
  3. Check the city or county office for each job location before you bid.
  4. Form your entity with the Secretary of State, then register any trade name.
  5. Set up workers' compensation with BWC and confirm your payroll requirements.
  6. Get a vendor's license if any part of your work involves taxable sales.
  7. Use a written contract that meets ORC Chapter 4722 for residential jobs of $25,000 or more.

When to get professional help

This guide is informational, not legal or tax advice. Talk to an Ohio construction attorney before you rely on a contract template, handle a subcontractor dispute, or sign a cost-plus agreement. Talk to a CPA about entity choice, CAT filing, and municipal net profit tax. Multi-trade operations and contractors working across several cities have the most complex situations and benefit most from professional review.

Official Ohio resources

Keep exploring: related Ohio guides