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How to become a plumber in Ohio

The license steps in Ohio, from apprentice to master or contractor, taken from the official licensing pages – plus pay, apprenticeships and where to apply.

The short answer

Ohio has no state apprentice or journeyman plumber license; after at least five years working as a plumbing tradesperson (or as a registered engineer with three years of construction experience) you can take the PSI exam for the state Plumbing Contractor license, and local governments handle residential registration.

Note: in Ohio, licensing is split between the state and local governments. Check the local rules where you will work too.

The steps in Ohio

  1. 1

    Start as an apprentice

    The official pages we checked do not set out a separate apprentice registration in Ohio. Most plumbers still start in an apprenticeship – see below. Ask the licensing office for the current rule.

  2. 2

    Earn your journeyman (first independent) license

    The official pages we checked do not describe a statewide journeyman license in Ohio. Ask the licensing office for the current rule.

  3. 3

    Master or contractor license

    Ohio's state Plumbing Contractor license (also called a master license) requires being at least 18, at least five years as a plumbing tradesperson immediately before applying (or being an Ohio-registered engineer with three years of construction experience), passing the PSI exam, and carrying contractor liability insurance.

  4. 4

    Keep your license current

    Contractors must complete 8 hours of continuing education for a one-year renewal or 24 hours for a three-year renewal.

Who licenses plumbers in Ohio

Ohio Construction Industry Licensing Board (Ohio Department of Commerce). License types we found: Plumbing Contractor.

Official application page

Already licensed? Anyone can check a license on elicense4.com.ohio.gov.

Licensed in another state?

Ohio has plumbing license reciprocity agreements with Arkansas, South Carolina, Tennessee and West Virginia; some require passing Ohio's business and law exam.

Finding an apprenticeship

Most plumbers learn the trade through a 4- or 5-year apprenticeship, with about 2,000 hours of paid on-the-job training each year plus classroom instruction, according to the Bureau of Labor Statistics. The U.S. Department of Labor’s Registered Apprenticeships are paid jobs with progressive wage increases, classroom instruction and a portable, nationally recognized credential; programs are approved by the Department of Labor or a State Apprenticeship Agency. Search programs at apprenticeship.gov, or ask local plumbing contractors and union locals.

Pay and job outlook

$63,800

Median yearly pay for plumbers, pipefitters and steamfitters, May 2025 (BLS).

7%

Projected job growth from 2025 to 2035, with about 42,000 openings a year (BLS).

4-5 years

Typical apprenticeship, with about 2,000 hours of paid on-the-job training a year (BLS).

National figures from the BLS Occupational Outlook Handbook; pay varies by state and city.

Already a plumber in Ohio?

173 plumbing businesses are listed on Plumbers Pages so far. Add your business free, or see plumbers in Ohio.

Sources

Requirements come from Ohio’s official licensing pages and statutes, checked October 2026. Rules change – confirm with the licensing office before you apply.

  1. codes.ohio.gov/ohio-revised-code/section-4740.06
  2. com.ohio.gov/wps/portal/gov/com/divisions-and-programs/industrial-compli
  3. com.ohio.gov/divisions-and-programs/industrial-compliance/boards/ohio-co
  4. U.S. Bureau of Labor Statistics – Plumbers, pipefitters and steamfitters
  5. U.S. Department of Labor – Apprenticeship.gov for career seekers

General information, not legal advice. All states · How we write our guides

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