Licensed Contractors in Ohio
Ohio's OCILB licenses electrical, plumbing, HVAC, hydronics, and refrigeration contractors at the state level. General contractors, roofers, and landscapers are licensed by individual cities and counties — no statewide roster exists for those trades.
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25 miOhio market snapshot
The contractor market in Ohio
Ohio has 12,552 active licensed contractors serving 11,774,683 residents. County building departments pulled 33,640 permits in 2025, the work pipeline those contractors compete for.
Cities with the most licensed contractors in Ohio
| Rank | City | Licensed contractors |
|---|---|---|
| 1 | Cincinnati | 79 |
| 2 | Columbus | 72 |
| 3 | Dayton | 47 |
| 4 | Cleveland | 40 |
| 5 | Mansfield | 24 |
| 6 | Akron | 22 |
| 7 | Hamilton | 19 |
| 8 | Canton | 15 |
| 9 | Ashland | 14 |
| 10 | Toledo | 14 |
Ranked by mapped active licenses. Cities only. The full roster covers every Ohio ZIP.
HVAC Contractors are the largest licensed trade in Ohio, with 4,956 active licenses. Every other covered trade is shown with its own count in the map above.
Common questions about Ohio contractors
How many licensed hvac contractors are in Ohio?
4,956 active licensed hvac contractors are registered in Ohio, verified against the Ohio Construction Industry Licensing Board (OCILB). ContractorRoster delivers every one with phone, email, and website.
How do I verify a Ohio contractor license?
Check any license number directly with the Ohio Construction Industry Licensing Board (OCILB) at https://elicense.ohio.gov/OH_HomePage. Every record we deliver carries its active license number so you can confirm it at the source.
What does a Ohio contractor list cost, and how current is the data?
Lists start at $19, delivered as a CSV within 3 minutes. The Ohio data was last refreshed 2026-07-07, sourced direct from the Ohio Construction Industry Licensing Board (OCILB) and enriched with contact info for most records.
Which contractor trades does Ohio cover?
Ohio covers 3 trades: electricians, plumbers, hvac contractors. Search any one by city or ZIP.
Which Ohio cities have the most licensed contractors?
Cincinnati, Columbus, Dayton lead Ohio by licensed-contractor count. ContractorRoster covers every city and ZIP in the state, not just the major metros.
Are the Ohio contractors in this list currently active?
Yes, every record is an active license; expired and lapsed licenses are filtered out. The Ohio data was last refreshed 2026-07-07 from the Ohio Construction Industry Licensing Board (OCILB).
Data source
Direct from the Ohio Construction Industry Licensing Board (OCILB)
Every record we deliver in Ohiocomes from the state's official license registry, refreshed regularly. We enrich each row with phone, email, website, and Google ratings sourced from public business listings. Contact info present for most records.
Visit Ohio Construction Industry Licensing Board (OCILB) →What you get
- • Active license number + classification
- • Business name + license holder name
- • Phone, email, website (most records)
- • Google rating + review count where available
- • Full mailing address + ZIP
- • Issue date + expiration date
- • CSV delivered to your inbox in under 3 minutes