Kentucky journeyman plumber licensing is administered by the Division of Plumbing in the Department of Housing, Buildings and Construction, under Kentucky Revised Statutes Chapter 318 and the regulations at 815 KAR. The examination has a written portion, a drawing portion, and a hands-on practical, and a candidate must score at least 75 percent on each portion. The PassProfessor Kentucky Journeyman Plumber program prepares candidates for the written knowledge behind that examination and for the Kentucky State Plumbing Code it is built on — and it states plainly, below, what a written program cannot rehearse.
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What this credential certifies
The Kentucky Journeyman Plumber license is the working plumber’s license in Kentucky. It sits in a deliberately small licensing structure: Kentucky examines exactly two plumbing licenses — Journeyman Plumber and Master Plumber — and there is no plumbing contractor license in Kentucky. That structure matters to a candidate planning a career, because the ladder has one examined step above this one, not a separate contractor tier to aim at instead. The authority behind both licenses is the Division of Plumbing, part of the Department of Housing, Buildings and Construction, working under Kentucky Revised Statutes Chapter 318 and the administrative regulations at 815 KAR.
The journeyman credential certifies that the holder has done the apprentice time Kentucky requires and has cleared every portion of an examination the Division itself administers — not on an average across portions, but each portion on its own. Kentucky’s design is unusually direct: the regulator writes the code, administers the examination, and sets a separate passing bar for written knowledge, for drawing work, and for hands-on connection work.
For the full route and the portion-by-portion detail, read the companion guide at /kentucky-journeyman-plumber-exam-guide/.
The examination at a glance
| Item | Verified position |
|---|---|
| Program | Kentucky Journeyman Plumber: the journeyman license examination administered by the Division of Plumbing |
| Regulator | Division of Plumbing, Department of Housing, Buildings and Construction (DHBC), under KRS Chapter 318 and 815 KAR |
| Examination administrator | The Division itself — Division-administered, with no outside examination vendor |
| Code | 815 KAR Chapter 20, the Kentucky State Plumbing Code — state-written; Kentucky has not adopted the IPC or the UPC in any edition |
| Examination portions | Written portion, drawing portion (pipe sizing on a prepared drawing), and a hands-on practical (making connections of various materials; the applicant furnishes materials) |
| Passing standard | Minimum 75 percent on EACH portion — no averaging across portions; the Master Plumber standard is 80 percent on each portion |
| Examination fee | $50 for the journeyman examination, as stated in the verified record for this program |
| Eligibility | At least two consecutive years as an apprentice, or an approved course plus at least one year as an apprentice |
| Continuing education | 6 hours in the 12 months before renewal |
| Not published | Question counts, time limits, and book status for the examination are unpublished and are stated nowhere in this package |
| Administrator note | PassProfessor is independent and is not affiliated with the Division of Plumbing or DHBC |
A state-written code: the Kentucky delta
The single fact that reorganises Kentucky preparation is the code. Kentucky’s plumbing code is the Kentucky State Plumbing Code at 815 KAR Chapter 20 — a code Kentucky wrote for itself. Kentucky has not adopted the International Plumbing Code or the Uniform Plumbing Code in any edition. A common claim in secondary material describes the Kentucky code as IPC-based; that claim is false, and candidates should set it aside wherever they meet it.
The practical consequence is severe for anyone preparing from generic material. A candidate who studies an IPC edition, however carefully, is studying a code Kentucky did not adopt. Provisions may coincide in places — plumbing principles are shared across codes — but coincidence is not a study plan, and the differences are exactly where a state-written examination has room to test. Kentucky preparation therefore starts from 815 KAR Chapter 20 itself: its own structure, its own sizing and installation rules, and its own language. Out-of-state experience brings real skill to the practical, but it brings a different code text to the written and drawing portions. The Kentucky delta is the text itself, and it has to be learned as a text.
Three portions, three different tests of a plumber
Kentucky’s examination, set out at 815 KAR 20:030, is not one paper. It has three portions, and each portion examines a different kind of competence.
The written portion examines code knowledge and plumbing knowledge in written form — the candidate’s command of the Kentucky State Plumbing Code and of the principles the code puts into rules. This is the portion a written preparation program addresses most directly.
The drawing portion examines pipe sizing on a prepared drawing. The candidate works from a drawing the examination provides and sizes piping on it — applying sizing rules to a presented system rather than reciting them in the abstract. It tests whether sizing knowledge survives contact with an actual layout. A written program can teach the sizing rules and work through sizing reasoning, and the PassProfessor program does that work — but it cannot reproduce the prepared drawing the Division will place in front of a candidate, and candidates should treat drawing practice on real layouts as a separate, necessary part of their own preparation.
The hands-on practical examines making connections of various materials, and the applicant furnishes the materials. This is a genuine practical: the candidate makes connections, by hand, in the examination setting. No written program — this one included — can rehearse that performance. What written preparation can do is make sure the knowledge around the practical is secure: which connection belongs to which material, and what the code requires of each joint. The hands themselves are trained in the field and in the apprentice years, not on a page.
75 percent on each portion — and what “each” means
The passing standard is a minimum of 75 percent on each portion. The word that carries the rule is “each.” A strong written score does not lift a weak drawing score; a confident practical does not average away a written shortfall. Each portion stands alone, and the candidate must clear all three bars in the manner the regulation and the Division’s administration provide.
Candidates should plan accordingly. Kentucky’s standard does not reward a single overall impression of readiness. It rewards a candidate who is separately ready in three modes: ready to answer in writing, ready to size on a drawing, and ready to make connections by hand. The Master Plumber standard, for ladder context, is higher on the same structure — 80 percent on each portion.
Eligibility: apprenticeship first, by design
Kentucky requires examination candidates to arrive through the trade. The journeyman route requires at least two consecutive years as an apprentice, or an approved course plus at least one year as an apprentice. The consecutive character of the two-year route matters: it is sustained apprentice service, not scattered months assembled over a longer span. The approved-course route shortens the apprentice requirement; it does not remove the apprentice year, and it does not remove the practical — which is consistent, because a practical examination of connection work presupposes hands that have already done that work under supervision. Candidates should confirm their own eligibility position with the Division before relying on either route.
Division-administered: no vendor in the middle
Kentucky’s examinations are administered by the Division of Plumbing itself. There is no outside examination vendor for this credential — no third-party testing company bulletin, no vendor catalogue entry, and no vendor’s version of the rules to consult. The verified examination fee for the journeyman sitting is $50.
That administration model changes where authoritative information lives. In Kentucky, the regulation — 815 KAR 20:030 for the examination — and the Division itself are the sources. It also explains a silence candidates will notice: question counts, time limits, and book status for the Kentucky examination are unpublished, and this package states none of them. Candidates should be wary of any secondary source that prints precise counts or timings for this examination; those figures are not published in the verified record.
Staying licensed: renewal and continuing education
The credential’s maintenance rule in the verified record is specific and time-windowed: 6 hours of continuing education in the 12 months before renewal. The window is the substance. Hours earned earlier do not satisfy a requirement measured against the twelve months immediately before renewal. The habit the rule rewards is a late-cycle one: schedule the six hours inside the final year, keep the records, and renew on a file that shows the hours where the rule looks for them.
What makes this examination demanding
Kentucky’s examination is demanding because its three portions cannot cover for one another, and because its code cannot be borrowed from another state’s preparation. A candidate can be an excellent working plumber and still be unprepared for the drawing portion if sizing-on-paper has never been practised as its own skill. A candidate can know plumbing principles thoroughly and still miss written items keyed to a state-written code they studied only through a model code. And every candidate, however strong on paper, must still make connections by hand, with materials they furnished. The examination is best understood as three smaller examinations sharing a candidate — and preparation that treats it as one event with one readiness level is aimed at the wrong target.
What the PassProfessor program will cover
The Kentucky code as the spine. The program in the PassProfessor catalog for this credential is built on 815 KAR Chapter 20, read as the state-written code it is. Written-portion preparation works through the code’s requirements and the plumbing principles beneath them — water supply, drainage, venting, fixtures, and the sizing rules the drawing portion applies — in Kentucky’s own framework, not in IPC or UPC terms translated afterwards.
Sizing reasoning, taught as reasoning. Because the drawing portion asks for pipe sizing on a prepared drawing, the program gives sizing sustained attention as an applied skill: reading a layout, accounting for the load a system presents, and applying the Kentucky rules step by step so the method can travel to a drawing the candidate has never seen.
The practical, addressed honestly. The program teaches the knowledge that surrounds connection work — materials, joint types, and what the code requires each connection to achieve — and it states its limit without hedging: it cannot rehearse the hands-on practical itself, and it cannot reproduce the drawing portion’s prepared drawing. Candidates should pair this program with their own drawing practice and with the field experience their apprenticeship provided.
Independence, stated plainly. PassProfessor is an independent preparation provider, not affiliated with the Division of Plumbing or the Department of Housing, Buildings and Construction, and this program is not a Division course. Completing it confers no license and no exemption; the Division alone licenses, and candidates apply and sit through the Division’s own channels. The companion guide at /kentucky-journeyman-plumber-exam-guide/ carries the fuller examination account.
Tell me when enrollment opens. The Kentucky Journeyman Plumber program is in the works and enrollment is not yet open. Leave an email address and PassProfessor will write to you when the program is ready — and only about this program. No date is promised, because the program will open when it meets the standard described above, not before.
Frequently asked questions
Who licenses journeyman plumbers in Kentucky?
The Division of Plumbing, in the Department of Housing, Buildings and Construction, under Kentucky Revised Statutes Chapter 318 and the regulations at 815 KAR.
How many plumbing licenses does Kentucky examine?
Two: Journeyman Plumber and Master Plumber. There is no plumbing contractor license in Kentucky.
Which code does Kentucky examine on?
The Kentucky State Plumbing Code at 815 KAR Chapter 20 — a state-written code. Kentucky has not adopted the IPC or the UPC in any edition, and describing the Kentucky code as IPC-based is incorrect.
What portions does the journeyman examination have?
Three: a written portion, a drawing portion covering pipe sizing on a prepared drawing, and a hands-on practical covering making connections of various materials. The applicant furnishes materials for the practical.
What score passes the Kentucky journeyman examination?
A minimum of 75 percent on each portion. The portions are not averaged, so every portion must be passed at its own bar. The Master Plumber standard is 80 percent on each portion.
Can a written preparation program prepare me for the practical?
Only partly, and this page states the limit plainly. Written preparation can teach the sizing rules behind the drawing portion and the code knowledge around connection work. It cannot rehearse the hands-on practical or reproduce the prepared drawing. Both need the candidate’s own hands-on and drawing practice.
Who administers the examination?
The Division of Plumbing itself. There is no outside examination vendor for this credential, and the verified journeyman examination fee is $50.
What experience must a journeyman candidate have?
At least two consecutive years as an apprentice, or an approved course plus at least one year as an apprentice. Confirm your individual position with the Division.
Are the examination’s question counts and time limits published?
No. Question counts, time limits, and book status are unpublished in the verified record, and this page states none of them. Treat precise figures from secondary sources with caution.
What continuing education does renewal require?
6 hours in the 12 months before renewal. The twelve-month window immediately before renewal is the period the rule measures.
Is PassProfessor affiliated with the Division of Plumbing?
No. PassProfessor is an independent preparation provider. The Division alone licenses plumbers and administers the examination.
When does enrollment open?
The program is in the works and enrollment is not yet open. Leave an email address on this page and PassProfessor will write to you when the program is ready — and only about this program.