Ohio licensing
Licensing in Ohio — Sources checked
Who and what this applies to
The Ohio Construction Industry Licensing Board licenses specified trades on construction projects as defined in Chapter 4740, excluding residential buildings and industrialized units.
Thresholds and scope
Coverage depends on trade and statutory project definition.
The rules
- Sections 4740.01 and 4740.13 require the appropriate license before acting or holding oneself out as an HVAC, refrigeration, electrical, plumbing or hydronics contractor within the chapter. Source
- The chapter’s construction-project definition excludes residential buildings and industrialized units; it is not a blanket license rule for every residential trade job. Source
Primary sources
Sources reviewed 2026-09-30. This guide covers the projects and rules stated above.
Not legal advice. This is general legal information. Laws and project facts differ; confirm the applicable requirements for your project.
Back to Ohio contractor law · Licensing topic guide.
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