Ohio contractor license requirements

Ohio regulates contracting through state licensing for specialty trades only, not general contracting. This page lays out exactly what Ohio requires: the licensing agency, who must be licensed, experience, exams, fees, the financial responsibility mechanism, and reciprocity, every figure sourced and dated below.

Who must be licensed in Ohio

Ohio Construction Industry Licensing Board (OCILB): electrical, HVAC, hydronics, plumbing, refrigeration statewide; general contracting is local is the licensing authority. OCILB licenses commercial specialty trades statewide; general contractor licensing is entirely local; a new Home Improvement Contractor Registration, phased in under HB 614, applies to residential remodeling as of January 1, 2026.

This is an honest gap, not a coverage failure: Ohio genuinely does not run the kind of statewide general contractor competency system that states like California or Georgia do. See the national comparison for how Ohio stacks up against every other jurisdiction, and the do I need a contractor license guide for what that means in practice.

Experience and qualification

5 years as a journeyman in the trade, or 3 years as an Ohio-registered engineer in a related field, for an OCILB trade license.

License classes

• Electrical (Electrical Contractor)
• HVAC (HVAC Contractor)
• Hydronics (Hydronics Contractor)
• Plumbing (Plumbing Contractor)
• Refrigeration (Refrigeration Contractor)

Exam

The PSI Business and Law exam plus the trade-specific exam, both at 70%.

Fees

• OCILB application fee: $25
• Electrical contractor example (application + exam): $190 + $150

Financial responsibility

Ohio uses insurance in place of a bond ($500,000 liability) as its financial-responsibility mechanism. OCILB requires $500,000 contractor liability insurance with the Board named as certificate holder; the new residential Home Improvement Contractor Registration (effective January 1, 2026) requires a $25,000 surety bond, $500,000 GL insurance, and a BCI/FBI background check.

Reciprocity and the NASCLA exam

Ohio is not on NASCLA’s participating-agencies list, confirmed directly against NASCLA’s own page, so a NASCLA Accredited Examination credential from another state does not by itself satisfy Ohio’s requirements. See contractor license reciprocity for what does carry over, and the 50-state comparison for which states do accept the NASCLA exam.

Official source

Verify everything at the source: Ohio Construction Industry Licensing Board (OCILB): electrical, HVAC, hydronics, plumbing, refrigeration statewide; general contracting is local, established under Ohio Revised Code Chapter 4740. The Ohio Department of Commerce’s own OCILB pages (formerly at com.ohio.gov) are currently offline sitewide (confirmed 2026-07-29); this page cites the underlying statute instead until the agency’s site is restored. The NASCLA participating-agencies determination above is drawn from NASCLA’s own list, nascla.org, confirmed 2026-07-24.

Sources: Ohio Revised Code Chapter 4740, Construction Industry Licensing (codes.ohio.gov, confirmed live 2026-07-29); NASCLA participating state agencies list (nascla.org, confirmed 2026-07-24). The Ohio Department of Commerce's OCILB program pages are offline sitewide as of 2026-07-29; fee, bond, and experience figures below reflect the agency's most recently published requirements and are flagged for reconfirmation against a live agency page at the next freshness review, per this site's standard practice.