Plumber License from Ohio to Kentucky: Does It Transfer? (2026)
Does Kentucky accept an Ohio plumbing license?
No — Kentucky has no reciprocity or endorsement path for Ohio plumbing license holders. You must apply to the Kentucky Department of Housing, Buildings and Construction — Division of Plumbing as a new applicant and meet Kentucky's full licensing requirements, including any exams it requires that you have not already passed.
Verify this exact pair in the checker
Same data, interactive — with share link and board links.
Verdict
Full re-application
Kentucky has no plumbing reciprocity or endorsement covering Ohio, so this is a full journeyman application either way. Kentucky has no plumbing reciprocity; every applicant, including out-of-state plumbers, must pass the Kentucky journeyman plumber examination (written, drawing, and practical sections, minimum 75% each). An out-of-state plumbing license may be submitted only as proof of the required experience, not as a substitute for the exam. The productive plan: gather proof of the apprenticeship or on-the-job hours you logged in Ohio, register for Kentucky's journeyman exam, and treat your experience as exam preparation and as credit toward Kentucky's experience requirement. Budget a new-applicant timeline and order your certified license history early — it is the long-lead item.
What's different between Ohio and Kentucky
Computed from both states' verified data rows, in both directions, and from the route every other origin gets into Kentucky. Exam notes are our summary of each board's published rules, with sources below.
- Route, each way
Ohio to Kentucky (this page): Full re-application.
Kentucky to Ohio (the reverse move): Licensure by endorsement.
The two directions differ: Ohio and Kentucky do not give each other's licensees the same route.
- Does coming from Ohio matter?
Coming from Ohio does not change the answer: every origin (the other 49 states and DC) gets the same result for a move into Kentucky.
- Reciprocity agreements
Kentucky's row names no reciprocity agreement states.
Ohio's reciprocity agreement list names 2 states (South Carolina and West Virginia), not including Kentucky.
- Application fee
Kentucky lists $110 for an out-of-state applicant and Ohio lists $25 for the reverse move; neither may be the full cost.
- Exam rules on record
Kentucky and Ohio carry different exam notes (our summaries, below); any state law or jurisprudence exam is listed with each state's requirements.
- Kentucky (this move): Kentucky has no plumbing reciprocity; every applicant, including out-of-state plumbers, must pass the Kentucky journeyman plumber examination (written, drawing, and practical sections, minimum 75% each). An out-of-state plumbing license may be submitted only as proof of the required experience, not as a substitute for the exam
- Ohio (the reverse move): Ohio waives its OCILB plumbing trade exam only for applicants who currently hold a South Carolina or West Virginia plumbing license obtained by examination (not by grandfathering or reciprocity); an out-of-state licensee who instead got their license by grandfathering or reciprocity must take both the Ohio plumbing exam and the Ohio Business and Law exam, and every other applicant must qualify with five years of trade experience and pass the Ohio plumbing exam
What changes, Ohio → Kentucky
| Ohio (current) | Kentucky (destination) | |
|---|---|---|
| Application fee | $25 ($25.00 non-refundable reciprocity application fee per trade; proof of at least $500,000 contractor liability insurance required. Non-reciprocal applicants pay a $25 exam application fee plus BCI and FBI background-check costs.) | $110 ($50 journeyman examination fee + $60 initial license fee (total $110 to become licensed); journeyman renewal is $60. Fees set by 815 KAR 20:030. Master plumber tier: $150 exam + $250 license.) |
| Processing time | No board-stated processing time; reciprocity applications are approved or denied by board review | No board-stated processing time; exam applications must reach the Frankfort office at least three weeks before the exam date |
| Licensing authority | Ohio Construction Industry Licensing Board (OCILB) — Ohio Department of Commerce, Division of Industrial Compliance | Kentucky Department of Housing, Buildings and Construction — Division of Plumbing |
The destination column is what you must satisfy — Kentucky sets the rules for this move.
Step by step
- Review Kentucky's initial-licensure requirements on the Kentucky Department of Housing, Buildings and Construction — Division of Plumbing website (linked below).
- Expect to meet Kentucky's education/experience requirements and pass any required exams you have not already passed — a national exam you passed often still counts, as can prior out-of-state licensure toward experience.
- Submit the standard (new applicant) application with fees listed above, and allow for the processing time shown there.
- Allow No board-stated processing time; exam applications must reach the Frankfort office at least three weeks before the exam date.
Official links
Related guides
Frequently asked questions
Can I keep my Ohio plumbing license after I'm licensed in Kentucky?
Yes — plumbing licenses in different jurisdictions run independently. Keep the Ohio credential active on its own renewal and continuing-education schedule and you hold both, which is common for plumbers working near a state line.
Sources
Primary sources only — official boards and compact commissions. Data last verified 2026-07-21.
- 815 KAR 20:030 Plumbing licenses — Kentucky Administrative Regulations (official LRC) ↗ (accessed 2026-07-21)
- Kentucky DHBC — Division of Plumbing ↗ (accessed 2026-07-21)
- Kentucky DHBC — Plumbing Licensing Examination ↗ (accessed 2026-07-21)
- 815 KAR 20:030 full text (Cornell LII copy; read for experience, exam, and fees) ↗ (accessed 2026-07-21)
- Kentucky DHBC — public license search / verification (plumbing) ↗ (accessed 2026-07-21)
- OCILB Examination Application (state commercial plumbing contractor license; $25 fee; five-year experience; trades include Plumbing) ↗ (accessed 2026-07-21)
- OCILB South Carolina Reciprocity Application (PL trade; exam waived for tested SC licensees; $25 per trade) ↗ (accessed 2026-07-21)
- OCILB West Virginia Mechanical Reciprocity Application (PL trade; must hold WV Master Plumber + WV Contractor license, tested not grandfathered) ↗ (accessed 2026-07-21)
Reviewed by the License Reciprocity Editorial Team · verified against primary sources 2026-07-21
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