Ohio licenses plumbing contractors at the state level through the Ohio Construction Industry Licensing Board (OCILB) at the Ohio Department of Commerce. There is no statewide journeyman plumber license; journeyman cards are municipal where they exist. ExamsLib offers free practice questions and study guides to help you prepare for the Ohio plumbing exams.
Overview
Exam Overview
In Ohio, the Ohio Construction Industry Licensing Board (OCILB) licenses plumbing contractors for commercial plumbing contracting statewide. Like Ohio's electrical trade, plumbing follows the contractor-only model: journeyman plumbing cards are municipal where they exist and voluntary at the state level, but an active journeyman card is one accepted way to document the required 5 years of experience.
Candidates take two computer-based PSI exams, the Plumbing Trade exam and the Business & Law exam. The trade exam references the Ohio Plumbing Code, OAC 4101:3, which is based on the International Plumbing Code; confirm the current edition at codes.ohio.gov before studying.
Scope
License Types
Ohio recognizes the following plumbing credential types:
- Plumbing Contractor (OCILB State License) - Commercial plumbing contracting statewide.
- Journeyman Plumber (Municipal Card) - Not a state license. Local cards exist in some municipalities and are voluntary at the state level.
Structure
Exam Format
The Ohio plumbing contractor examination consists of two computer-based PSI exams: the Plumbing Trade exam and the Business & Law exam. Review the current PSI Candidate Information Bulletin for question counts, time limits, and reference rules before your test date.
Score
Passing Score
Ohio does not publish a passing score for the OCILB exams on the state page. Prep providers cite 70 percent, but confirm the current passing standard in the PSI Candidate Information Bulletin before scheduling.
Eligibility
Requirements
Typical requirements to sit for the Ohio plumbing contractor exam include:
- Being at least 18 years old.
- 5 years of trade experience (or a current Ohio registered PE with 3 years of construction business experience, or 5 years as an Ohio government inspector in the trade).
- Tax documents (W-2s or Schedule C) plus permits, a journeyman card, an apprenticeship certificate, or 40 hours of OCILB code continuing education. Note: sewer, water, gas service, and drain-cleaning permits do not count as qualifying permits.
- A BCI and FBI background check after Board approval.
- $500,000 in contractor liability insurance.
Requirements can change. Always confirm current licensing rules with the official state licensing authority before applying.
Cost
Fees
OCILB charges a $25 application fee per trade and a $25 license issuance fee per trade, with a $60 per year escrow (inactive) renewal fee. The PSI exam fee is paid to PSI; prep providers cite about $69 per exam, but confirm in the PSI Candidate Information Bulletin. Always confirm current fee amounts with OCILB or PSI before submitting payment.
Plan Ahead
Study Plan
A focused 4 to 6 week study plan works well for most candidates:
- Week 1-2: Review the fundamentals of Water Supply Systems and Drainage and Vent Systems.
- Week 3-4: Work through the Ohio Plumbing Code (OAC 4101:3) and Business & Law topics, then take a full-length practice test.
- Week 5-6: Review every missed question, drill weak areas, and simulate exam timing.
Practice topics on ExamsLib cover Water Supply Systems, Drainage and Vent Systems, Plumbing Code.
Focus Areas
Study Topics
WS Water Supply Systems
Study water supply systems for your plumbing exam. Covers pipe materials, sizing, backflow prevention, water heaters, and T&P relief valves.
Study this topicDS Drainage and Vent Systems
Study drain, waste, and vent systems for your plumbing exam. Covers traps, pipe slope, venting methods, critical distance, and DWV sizing.
Study this topicPC Plumbing Code
Study plumbing code for your licensing exam. Covers UPC vs IPC, permit and inspection process, fixture requirements, cross-connection control, and ADA rules.
Study this topic
Keep Exploring
Related Pages
Frequently asked questions
Who issues plumbing licenses in Ohio?
The Ohio Construction Industry Licensing Board (OCILB) at the Ohio Department of Commerce issues the statewide plumbing contractor license. Ohio licenses plumbing contractors only; journeyman cards come from municipal programs where they exist. Verify the current process with OCILB, since rules can change.
Is there a statewide journeyman plumber license in Ohio?
No. Journeyman plumbing cards are municipal where they exist and voluntary at the state level. An active journeyman card is one accepted way to document the 5 years of experience required for the OCILB plumbing contractor license.
What plumbing code does Ohio use?
Ohio uses the Ohio Plumbing Code, OAC 4101:3, which is based on the International Plumbing Code. Confirm the current edition at codes.ohio.gov before you start studying, since adopted editions change.
Do all permits count toward the Ohio plumbing experience requirement?
No. Per the OCILB Examination Application, sewer, water, gas service, and drain-cleaning permits do not count as qualifying permits when documenting your experience. Confirm accepted documentation with OCILB before applying.
