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Missouri to Indiana: journeyman plumber license reciprocity

No credit· Start overVerified September 23, 2026· 7 sources

Missouri does not issue a statewide journeyman plumber license, so there is nothing to transfer. Here is Indiana's standard path for out-of-state applicants.

Your origin state does not issue a statewide license at this level, so there is no license to transfer. The destination's standard out-of-state path is shown; expect to meet it in full.

Reference only, not legal advice. Rules change; confirm with the licensing board before you apply. Full disclaimer.

Commission review of out-of-state journeyman credentials (IC 25-28.5-1-19; no named partner states)

Your out-of-state credentials give no advantage. You meet the destination's requirements from scratch.

Indiana publishes no list of reciprocal partner states for plumbing, and the Plumbing Commission's FAQ states that reciprocity is not available for journeyman plumbers: an out-of-state journeyman files an application, the Commission reviews it, and an approved applicant must pass the Indiana exam. IC 25-28.5-1-19 allows a license without examination where the origin state's requirements were substantially equal and that state grants Indiana licensees the same privilege, but the Commission's published process routes out-of-state licensees to the exam. You file a Journeyman Plumber application in MyLicense One with certification of your out-of-state license and an employer affidavit showing four years of experience in the plumbing trade, then schedule the 90-question Indiana Journeyman Plumber exam with Prov. The application fee is $30, and the initial license fee is $30 if the license is issued in an even-numbered year or $15 in an odd-numbered year.

Indiana's statute provides for licensing without examination for holders from states with a reciprocity agreement or substantially equal requirements (IC 25-28.5-1-12(e) and -19), but the Commission names no such states and its FAQ says reciprocity is not available. Under IC 25-28.5-1-12(d), a license from a state without a reciprocity agreement makes the holder eligible to take the Indiana exam; an applicant from a state that does not license plumbers must instead meet Indiana's apprenticeship or experience requirements. Nonresident licensees must also appoint the Commission's secretary as agent for service of process (IC 25-28.5-1-20).

At a glance

Trade exam
Required
Law / code exam
Not required
Out-of-state hours
Count toward eligibility

What you must already have

  • Your Missouri license must be active and in good standing.
  • Applicant is at least 18 years of age (IC 25-28.5-1-19)
  • You must document at least 4 years of qualifying work experience.

What you'll do to get licensed in Indiana

  1. 1Application fee. Pay the application fee ($30). Journeyman Plumber application fee, paid by card in MyLicense One; nonrefundable.
  2. 2License fee. Pay the license or certificate fee ($30). Initial license issuance fee when the license is issued in an even-numbered year; $15 when it is issued in an odd-numbered year.
  3. 3Trade exam. Pass the destination's trade exam. Indiana Journeyman Plumber exam administered by Prov after the Commission approves the application: 90 multiple-choice questions in 3 hours, approved code references allowed.
  4. 4Exam fee. Pay the exam fee ($75). Prov examination fee, paid to Prov for each attempt.
  5. 5Other. Certification of licensure from the other state's licensing authority (860 IAC 1-1-11) and a notarized employer affidavit of experience in the plumbing trade, uploaded in MyLicense One.
  6. 6Other. Answer the application's background questions; for any "yes" answer, attach a full statement (violation, location, date, cause number and disposition) and copies of the court documents.

Published fees on this path total $135, excluding exam-vendor fees, bonds, and insurance.

What you'll need to buy or arrange

Exam preparation

Most boards contract PSI, Prov, or ICC for exams. Check which code edition the exam is written to before buying a prep course.

  • Trade exam
  • Exam fee · $75

How Indiana licenses journeyman plumbers

Indiana journeyman plumber · “Journeyman Plumber”

Statewide license

Verified September 23, 2026· 4 sources

Issued by Indiana Plumbing Commission (Indiana Professional Licensing Agency)

Indiana licenses plumbers statewide through the Indiana Plumbing Commission, which is administered by the Professional Licensing Agency (PLA) under IC 25-28.5-1. The Commission registers Plumbing Apprentices and approves apprenticeship programs and schools, and it issues Journeyman Plumber and Plumbing Contractor licenses to individuals, a Temporary Plumbing Contractor license, and a Corporate Plumbing Business registration for entities. Applications, renewals and license verification are handled online in MyLicense One with an Access Indiana account. The Indiana journeyman examination is administered by the testing vendor Prov, and initial license fees depend on whether the license is issued in an odd or even year of the two-year cycle. Indiana's statute contains a reciprocity section (IC 25-28.5-1-19) and nonresident provisions (IC 25-28.5-1-12(d) and -20), so an out-of-state journeyman applies to the Commission rather than to any city or county; cities may require a licensed plumber to register but may not require any other license (IC 25-28.5-1-33).

Moving to IndianaLeaving Indiana

Compare: getting a Indiana license from scratch

Why Missouri has nothing to transfer

Missouri journeyman plumber

Licensed by cities and counties

Verified September 16, 2026· 6 sources

Missouri has no statewide journeyman plumber license and no state plumbing board. RSMo chapter 341 instead authorizes cities over 15,000 population and first-classification counties to examine and certify plumbers through their own boards of examiners, and the Division of Professional Registration licenses no plumbing profession (the state's only statewide construction credential is the voluntary electrical contractor license). Journeyman plumbers are therefore licensed jurisdiction by jurisdiction: St. Louis County's Board of Plumbing Examiners, the City of St. Louis Plumbers and Drainlayers Board of Examiners, Kansas City's City Planning and Development contractor-licensing program, Springfield's Building Development Services, and other cities and counties that have adopted a plumbing code. There is no statewide reciprocity and no state mechanism to recognize an out-of-state license. Springfield admits an applicant licensed elsewhere on proof of experience plus an identical ICC (Pearson Vue), Prometric, Experior or Block exam score of 75% or better, and Kansas City may accept a comparable exam from another jurisdiction it deems equivalent; the St. Louis County and City of St.

How local licensing works in Missouri

How local licensing works. Missouri regulates plumbers only through local government. RSMo §§ 341.010-341.080 (cities over 15,000) require plumbers to hold a certificate issued after examination by a city board of examiners, and §§ 341.090-341.220 (first-classification counties) let a county create a department and board of plumbing and sewer inspection that licenses master plumbers, journeymen and drainlayers, sets fees and license terms (§ 341.180) and requires master plumber bonds (§ 341.200). Each board writes its own rules, so hours, exams, fees and the treatment of other jurisdictions' licenses differ from place to place, and a plumber must hold the license of each jurisdiction in which they work.

St. Louis County. The Department of Transportation and Public Works' Plumbing Licensing office (41 South Central Avenue, Clayton, 314-615-3741, [email protected]) licenses Journeyman, Master Plumber and Apprentice plumbers and certifies plumbing contractors under the county plumbing code. The Board of Plumbing Examiners normally meets the first Thursday of each month at 8:00 a.m., and renewal carries a PEU (professional education unit) requirement. The county's separate mechanical board exempts pipefitting and sprinkler-fitting journeymen 'licensed under the county plumbing code' from its own test, which shows how tightly the county's trade licenses are tied to its own code.

City of St. Louis. The Building Division's Plumbers and Drainlayers Board of Examiners 'reviews licensing matters, apprentice applications, complaints, and other business related to plumbing and drainlaying work in the City of St. Louis'. Certification requires an application with notarized references and a passing score from a recognized agency such as Prometric or ICC ($60 application, first four-year certificate free, $181 renewal every four years), and the city 'may accept comparable examinations from other jurisdictions if deemed equivalent or superior' to its approved exams. Kansas City does not publish online whether it still issues a separately titled journeyman plumber license, its experience requirement, or any named reciprocity (for example with Johnson County, Kansas); contact the city's permits office.

Springfield. Building Development Services certifies Journeyman Plumbers. Eligibility is 4 years under the supervision of a master plumber or 6 years' experience in the trade, documented on signed, notarized Applicant Experience Forms for every employer (Schedule C or 1099s if self-employed). The packet goes to the board, which meets the first Thursday of each month at 5:00 p.m. in the Busch Building; approval to test is good for one year. The exam is the ICC plumbing exam through Pearson Vue (about $125 paid to Pearson Vue), 75% to pass; the city then issues the Trade Certification Card for $25, renewing at $25 per year. Out-of-state treatment: an applicant licensed in another jurisdiction applies under 'Reciprocity from another jurisdiction' by submitting the same experience documentation plus a copy of an exam score notification of 75% or better from Prometric, Experior, Block or ICC (Pearson Vue), 'the examination must be the identical exam as required by the City of Springfield'; the exam is then not repeated. A license backed by a different exam gives no advantage beyond documenting experience.

Columbia and others. Columbia, St.

Moving to MissouriLeaving Missouri

Common questions

Do I have to take the Indiana journeyman plumber exam if I'm licensed in Missouri?
Yes. Indiana requires the trade exam on this path.
What does it cost to get a Indiana journeyman plumber license from Missouri?
Published fees on this path total $135, not counting exam vendor fees or bonds.
Do my Missouri work hours count in Indiana?
Yes. Documented out-of-state experience counts toward Indiana's eligibility requirements.
Does it work the other way, from Indiana to Missouri?
Not necessarily. Reciprocity is directed. Going from Indiana to Missouri, the mechanism is not applicable.

Sources

  1. 860 IAC 1 - Indiana Plumbing Commission, General Provisions (fees, admission to examination, examinations) · 860 IAC 1-1-2.1, 1-1-7, 1-1-8, 1-1-9, 1-1-10, 1-1-11, 1-3-1, 1-3-1.1, 1-3-2, 1-5-7 · Indiana Professional Licensing Agency · Admin Rule · verified September 23, 2026
  2. Indiana Code Title 25, Article 28.5 (Plumbers), Chapter 1 - Regulation of Plumbers; Creation of Commission; Licensing · IC 25-28.5-1-12, -13, -15, -16, -17, -18.1, -18.3, -18.5, -19, -20, -22, -23, -32, -33 · Indiana General Assembly · Statute · verified September 23, 2026
  3. Section 4 - Experience in a Plumbing Business, and Employer Affidavit of Experience in Plumbing Trade (part of State Form 27522) · Indiana Professional Licensing Agency · Form · verified September 23, 2026
  4. Indiana Professional Licensing Agency - Plumbing Home (Indiana Plumbing Commission) · Indiana Professional Licensing Agency · Agency Page · verified September 23, 2026
  5. Indiana Professional Licensing Agency - Plumbing Licensing Information (application instructions, renewal, fee schedule) · Indiana Professional Licensing Agency · Agency Page · verified September 23, 2026
  6. Wayback Machine snapshot (2025-09-02) of PLA Plumbing Licensing Information · Internet Archive (capture of in.gov) · Other · verified September 16, 2026
  7. Indiana - Candidate Information Bulletin (Prov, IN CIB 2026.10.12) · Prov, Inc. (for the Indiana Plumbing Commission) · Form · verified October 12, 2026

Verified dates are when a person last opened each source and confirmed the facts above. Cite the board, not us.

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