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How to become a plumber in Indiana

The Indiana Plumbing Commission licenses plumbers in Indiana.

Your ladder

Dates if you start in Nov 2026 and work 40 hours a week.

  1. Plumbing ApprenticeStart here
  2. Journeyman Plumber6,400 hours on the job
  3. Plumbing ContractorRun your own business

First: start as an apprentice.

Dates are estimates, worked out from the hours on the job each license requires and the hours a week you pick.

Your steps

Steps for: New to the trade. The dates follow your ladder. Change where you are, your start month or your hours a week at the top of the page.

  1. Step 1, Start here

    Start as an apprentice

    An apprenticeship is a paid job with training. You work for an employer and you learn the trade on the job. Indiana has 302 registered plumber apprenticeship programs. The median wage is $20.78 an hour at the start and $36.89 an hour at the end.

    The programs with the most active apprentices

  2. Step 2,

    Get your Plumbing Apprentice license

    Apply to the Indiana Plumbing Commission for the Plumbing Apprentice license.

    The application fee is $10.

    You renew the Plumbing Apprentice license every 2 years. The renewal costs $10.

  3. Step 3,

    Complete 6,400 hours on the job

    To qualify for the Journeyman Plumber license, you need 6,400 hours on the job and 576 classroom hours.

  4. Step 4,

    Apply for your Journeyman Plumber license

    Apply to the Indiana Plumbing Commission for the Journeyman Plumber license. You must pass the exam named "Indiana Journeyman Plumber". Prov gives the exam.

    Hours on the job
    6,400
    Exam
    $75
    Fee
    $30

    The Journeyman Plumber license requires 6,400 hours on the job. You also need 576 classroom hours.

    About the exam: “Multiple choice, open book and computer-based: 90 questions in 180 minutes, 70% to pass”

    The application fee is $30. The Journeyman Plumber license costs $30.

    You must pass the exam named "Indiana Journeyman Plumber". The exam costs $75.

    You renew the Journeyman Plumber license every 2 years. The renewal costs $30.

    The 576 classroom hours are part of the 4-year apprenticeship. The experience route has no classroom hours.

    The $30 fee covers the full two-year license. If your license is issued in an odd year, it costs $15, because it runs for 1 year.

    The official wording of the requirement
    Journeyman Plumber“An Indiana resident must have completed at least four years in an apprenticeship program approved by the commission, or present a notarized statement of at least four years of experience in the plumbing trade in employment as set forth in IC 25-28.5-1-32(2), 32(6) or 32(7). A non-resident who holds a licence in a state with no reciprocity agreement with Indiana presents that licence to be eligible for the examination.”
  5. Step 5,

    Renew your license

    You renew the Journeyman Plumber license every 2 years.

To run a plumbing business

These are the licenses for running a plumbing business.

Plumbing Contractor

Hours on the job
6,400
Exam
$100
Fee
$50

The Plumbing Contractor license requires 6,400 hours on the job. You also need 576 classroom hours.

About the exam: “Multiple choice, open book and computer-based: 90 questions in 180 minutes, 70% to pass”

The application fee is $50. The Plumbing Contractor license costs $100.

You must pass the exam named "Indiana Plumbing Contractor". The exam costs $100.

You renew the Plumbing Contractor license every 2 years. The renewal costs $100.

You need 6,400 hours on the apprenticeship route or the experience route. The third route is 4 years in a plumbing business under a licensed plumbing contractor.

The 576 classroom hours are part of the 4-year apprenticeship. The other 2 routes have no classroom hours.

The $100 fee covers the full two-year license. If your license is issued in an odd year, it costs $50, because it runs for 1 year.

The official wording of the requirement
Plumbing Contractor“An Indiana resident must have completed at least four years in an apprenticeship program approved by the commission, or present a notarized statement of at least four years of experience in the plumbing trade in employment as set forth in IC 25-28.5-1-32(2), 32(6) or 32(7), or have worked in a plumbing business under the direction of a licensed plumbing contractor for at least four years. A non-resident who holds a licence in a state with no reciprocity agreement with Indiana presents that licence to be eligible for the examination.”

Plumbing Corporation

The application fee is $50. The Plumbing Corporation license costs $100.

You renew the Plumbing Corporation license every 2 years. The renewal costs $100.

The $100 fee covers the full two-year license. If your license is issued in an odd year, it costs $50, because it runs for 1 year.

The official wording of the requirement
Plumbing Corporation“To qualify for a Corporate Plumbing Contractor License you must be licensed as a Plumbing Contractor in the State of Indiana”

Take the exam

LicenseExam
Journeyman PlumberIndiana Journeyman PlumberProv gives the exam.
Plumbing ContractorIndiana Plumbing ContractorProv gives the exam.

You take the exam for the license you apply for.

What plumbers earn in Indiana

$36.69an hour

$76,320 a year, full time

Half of the plumbers on a payroll in Indiana earn more than $36.69 an hour, and half earn less. The federal wage survey puts the yearly figure at $76,320.

These figures cover everyone on a payroll as a plumber in Indiana, from apprentices to people with decades in the trade, so they aren't a starting wage. The survey counts 11,280 jobs. The figures don't include self-employed plumbers.

The yearly figure is for full-time work all year, which is 2,080 hours.

Use a license from another state

The Indiana Plumbing Commission doesn't recognize licenses from other states.

If you're a licensed plumber in another state, you can use your license to qualify for the Indiana exam. Send your application and fee. The Indiana Plumbing Commission reviews it. Once the Indiana Plumbing Commission approves you, you must pass the exam.

Questions

Can you become a plumber with no experience?

Yes. You can start as an apprentice and learn the trade on the job.

Indiana plumber apprenticeships

How much do most plumbers earn in Indiana?

Half of the plumbers on a payroll in Indiana earn between $27.89 and $46.52 an hour. These figures don't include overtime pay.

Can a plumber earn $100,000 a year in Indiana?

Yes. The highest-paid 10% of plumbers on a payroll in Indiana earn more than $102,520 a year before overtime.

Contact the licensing office

Indiana Plumbing Commissionin.gov/pla/professions/plumbing-home

Words to know

Apprentice
Someone who learns the trade on the job, working under a licensed worker.
Journeyman
The license level after apprentice. Some states write journeyperson, journeyworker or journey level.
Reciprocity
An agreement that lets you use a license from one state to get a license in another.
Prov
A company that runs licensing exams for state and city offices.
Notarized
Signed in front of a notary public, who checks your ID and stamps the form.
Median
The middle figure. Half of the workers earn more, and half earn less.

Sources

7
  1. Indiana General Assembly, IC 25-28.5-1-11, "Unlawful acts"
  2. Indiana Plumbing Commission, plumber licensing, the licensing office
  3. US Bureau of Labor Statistics, Occupational Employment and Wage Statistics, May 2025
  4. Indiana Plumbing Commission, plumber licenses, experience, exam, fees and renewal
  5. Indiana Plumbing Commission, 860 IAC 1-3-2, "Retaking of journeyman plumber and plumbing contractor examination upon failure"
  6. Prov, Indiana Journeyman Plumber and Indiana Plumbing Contractor
  7. U.S. Department of Labor national apprenticeship data, extract of August 17, 2026

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