Yes: Kentucky licenses plumbers statewide through the Department of Housing, Buildings and Construction (DHBC) and its Division of Plumbing.
No one may work at the trade without an active journeyman or master plumber license.
A journeyman needs 2 consecutive years as an apprentice plumber and at least 75% on each exam portion.
A master needs 2 years as a licensed journeyman in the past 5 years and at least 80% on each portion of the master exam; the master license is what a plumbing business operates under.
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At a glance
Yes.
Kentucky licenses plumbers statewide: no one may engage in plumbing or work at the trade of plumbing without an active journeyman or master plumber license.
The Kentucky Department of Housing, Buildings and Construction (DHBC), Division of Plumbing.
Journeyman plumber and master plumber.
There is no separate plumbing contractor license β a plumbing business operates under an active master plumber license.
Journeyman: 2 consecutive years as an apprentice plumber, or 1 year plus a department-approved course.
Master: 2 years as a licensed journeyman within the past 5 years.
A written exam plus a pipe-sizing drawing at both levels; the journeyman exam adds a practical section.
Minimum pass scores are 75% (journeyman) and 80% (master) on each portion; exam fees are $50 and $150.
The testing vendor is not named in our research.
Every year: licenses expire the last day of the licensee's birth month, and renewal costs $60 for a journeyman or $250 for a master, plus at least 6 hours of approved continuing education in the 12 months before renewal.
Only with states that have a statewide plumbing code, an exam at least equal to Kentucky's, and a reciprocal agreement with Kentucky.
DHBC's License Search and Verification on dhbc.ky.gov β our research recorded the link from the department's site navigation, so start there rather than from a copy.
One of the two licenses Kentucky requires before anyone works at the trade of plumbing: 2 consecutive years as an apprentice plumber (or 1 year plus a department-approved course), at least 75% on each portion of the journeyman exam, and a $60 license fee.
The higher of Kentucky's two plumbing licenses β 2 years as a licensed journeyman within the past 5 years (or equivalent out-of-state licensing or experience, or a Kentucky engineer license) with at least 80% on each portion of the master exam; because Kentucky has no separate plumbing contractor license, a plumbing business operates under an active master plumber license.
Yes.
Kentucky licenses plumbers statewide through DHBC's Division of Plumbing, and the statute is direct: no person may engage in plumbing or engage in or work at the trade of plumbing without an active master or journeyman plumber license.
The license requirement names two levels, journeyman and master plumber, and both are individual credentials.
Kentucky has no separate plumbing contractor license β what that means for a business is covered in the next section.
βNo person shall engage in plumbing or engage in or work at the trade of plumbingβ
Kentucky's plumbing license requirement names two individual licenses: journeyman plumber and master plumber.
Either active license satisfies the statewide requirement to work at the trade.
The master license is also the business credential: Kentucky has no separate plumbing contractor license, so a plumbing business operates under an active master plumber license, and the business must carry at least $250,000 in general liability insurance plus workers' compensation and unemployment insurance compliance.
If the master plumber representing a company dies, the company must notify DHBC within 10 days; it may use the license for a 180-day interim period, and then it must have a replacement master.
The journeyman license takes 2 consecutive years of experience as an apprentice plumber, or 1 year plus a department-approved course.
You pass the journeyman exam with at least 75% on each portion and pay a $60 license fee.
The master license takes 2 years as a licensed journeyman within the past 5 years, working under a master; in place of that experience, DHBC accepts equivalent out-of-state licensing or experience, or a Kentucky engineer license.
Master applicants score at least 80% on each portion of the master exam and pay a $250 license fee.
DHBC's plumbing rules set the exam itself: both levels take a written exam plus a pipe-sizing drawing, and the journeyman exam adds a practical section for which the applicant supplies the materials.
Exam fees are $50 for the journeyman exam and $150 for the master exam, on top of the license fees above.
Our research did not identify who administers the Kentucky plumbing exam, so ask DHBC's Division of Plumbing how and where to schedule before you file.
βThe journeyman plumber's license examination shall include a practical sectionβ
Kentucky plumber licenses expire every year on the last day of the licensee's birth month, and renewal costs $60 for a journeyman or $250 for a master.
Before each renewal you must complete at least 6 hours of approved continuing education in the 12 months before renewing, in the subjects DHBC's rules list as business, job safety, codes and trade subjects, and up to 12 excess hours may be carried forward.
The rule is written for HVAC and plumbing licensees together, so it applies to a plumbing license the same way.
βa licensee or certificate holder shall provide proof of at least six (6) hours of approved continuing education prior to license renewalβ
Only on Kentucky's terms.
Kentucky may license a plumber from another state when three conditions all hold: the other state has a statewide plumbing code, its examination is at least equal to Kentucky's, and the other state agrees to reciprocate with Kentucky.
The statute states the conditions without naming partner states, and our research did not confirm a list of reciprocal states, so ask DHBC's Division of Plumbing whether your state qualifies before you count on it.
There is a second door at the master level: equivalent out-of-state licensing or experience can stand in for the journeyman experience requirement.
βif that state has a statewide plumbing code, the other state's examination is at least equal to that of Kentucky, and the other state agrees to reciprocate with Kentuckyβ
DHBC's site carries a License Search and Verification link on dhbc.ky.gov.
Our research recorded the link from the department's site navigation rather than by opening the search page itself, so start from dhbc.ky.gov and follow License Search and Verification rather than trusting a third-party copy of the address.
Search it before you take a job with a shop that claims licensed status, and ask DHBC's Division of Plumbing if a license you are checking does not appear.
This page summarizes the Kentucky board pages, statutes, rules and other sources listed below, as read for this state-by-state plumbing licensing series, current as of September 2026.
It is not a substitute for the instructions the Kentucky Department of Housing, Buildings and Construction (DHBC), Division of Plumbing publishes.
For the rest of the picture in Kentucky, see HVAC licensing in Kentucky, plumbing apprenticeships in Kentucky, plumbing contractor licensing in Kentucky, and plumber pay in Kentucky.
The exam fees are $50 for the journeyman exam and $150 for the master exam.
The license fees are $60 for a journeyman and $250 for a master, and renewal costs the same each year: $60 journeyman, $250 master, due when your license expires on the last day of your birth month.
Renewal also requires your 6 hours of approved continuing education.
The experience requirement is 2 consecutive years as an apprentice plumber, or 1 year plus a department-approved course.
You then pass the journeyman exam with at least 75% on each portion β the exam includes a practical section where the applicant supplies the materials β and pay the $60 license fee.
No separate one.
A plumbing business in Kentucky operates under an active master plumber license and must carry at least $250,000 in general liability insurance plus workers' compensation and unemployment insurance compliance.
If the master plumber representing a company dies, the company must notify DHBC within 10 days; it may use the license for a 180-day interim period, and then it must have a replacement master.
Yes.
Kentucky's HVAC and plumbing licensees must complete at least 6 hours of approved continuing education in the 12 months before each annual renewal.
The approved subjects are business, job safety, codes and trade subjects, and up to 12 excess hours may be carried forward.
Licenses renew annually, expiring on the last day of the licensee's birth month.
Only if Kentucky's three conditions all hold: your state has a statewide plumbing code, its exam is at least equal to Kentucky's, and your state agrees to reciprocate with Kentucky.
The statute states the conditions without naming partner states, and our research did not confirm a list of reciprocal states, so check with DHBC's Division of Plumbing before you rely on your home-state license.
Sources
Sourced from the documents listed above.
Verified September 2026.
This is career information, not legal advice.
Confirm current rules with the Kentucky Department of Housing, Buildings and Construction (DHBC), Division of Plumbing.