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Plumber · Local (city/county) licenses

How to become a licensed plumber in Wyoming

State law and licensing-board sources · Last reviewed October 11, 2026

Journeyman level Licensed by cities or counties, not the state What's a journeyman?

In Wyoming, plumbing licenses come from cities, towns and counties, and a 2024 state law makes them recognize each other's contractor licenses when the contractor passed an International Code Council (ICC) exam or equivalent. In Cheyenne, the journeyman plumber license takes 4 years and 8,000 hours as a licensed apprentice plus an exam. In Casper, it takes a completed federally recognized apprenticeship or 4 years in a Casper-licensed plumbing shop, plus an ICC exam. [1][2][3]

New to the trade?

Starting from zero in Wyoming

To start in plumbing in Wyoming, get hired by a licensed plumbing contractor or apply to the UA Local 192 apprenticeship, which serves the whole state. Before you work, get the local apprentice license where the job is: in Cheyenne every worker on a plumbing job site must be licensed, and in Casper your employer gets the apprentice license in your name. [2][3][6]

  • High school diploma or GED

    We found no state or city rule requiring one for an apprentice license. UA Local 192's apprenticeship requires a copy of your high school diploma and transcripts, or a high school equivalency (GED) and test results. [2][3][8]

  • Minimum age

    UA Local 192 requires you to be at least 18. [8]

  • Get your apprentice license before you work

    Cheyenne's regulations say all employees on a plumbing job site must hold a master, journeyman or apprentice license or be a qualified supervisor Apply through the city's OpenGov portal. In Casper the apprentice license costs $3 and is issued to your employer in your name. [2][3][4]

  • Helper jobs

    In Cheyenne, no one may employ an unlicensed apprentice, and one journeyman or master may supervise no more than three plumbing apprentices. Cheyenne apprentices get 100% supervision in year one, 75% in year two, 50% in year three and 25% in year four. [2]

  • Documents to apply

    UA Local 192 asks for your birth certificate, driver's license and diploma or GED records, then schedules an interview and ranks applicants Contractors hire from the top of the list. [8]

  • Pay while you learn

    UA Local 192 apprentices work full time for contractors during the day and attend evening classes three times a week during the school year. [7]

  • Credit for an apprenticeship

    Casper accepts a certificate of completion from a federally recognized plumbing apprenticeship in place of 4 years in a Casper-licensed shop for the journeyman license Cheyenne accepts certified equivalent training. [2][3]

  • Still in high school?

    Wyoming's Pre-Apprenticeship Pathways connect youth ages 16 to 24 to construction careers and help high school students earn post-secondary credentials. The Wyoming Department of Education says districts set their own career and technical education (CTE) programs of study, and dual and concurrent enrollment earns college credit at Wyoming's community colleges and the University of Wyoming. Cheyenne offers a Class E educational license so school districts and community colleges can run construction projects as part of a curriculum. We found no local rule that counts high school CTE hours toward a plumbing license. [2][12][13][14]

Where to apply in WyomingHow to get an apprenticeshipHelper jobs

Wyoming plumbing license at a glance

Who issues licenses
Cities, towns and counties (for example the Cheyenne Contractor Licensing Board and Casper's Community Development Department) No state plumber license found [1][2][3]
Apprentice license
Cheyenne: required for every worker on a plumbing job site. Casper: issued to your employer in your name, $3 [2][3]
Journeyman experience (Cheyenne)
4 years with 8,000 hours as a licensed apprentice (or certified equivalent training) plus an exam A residential-only journeyman license takes 2 years and 4,000 hours [2]
Journeyman experience (Casper)
A completed federally recognized plumbing apprenticeship, or 4 years in a Casper-licensed plumbing shop, plus ICC exam G27-N or G28-N [3]
Master experience
Cheyenne: 8,000 hours as an apprentice plus 3 years (6,000 hours) as a journeyman. Casper: a completed federally recognized apprenticeship, or 4 years in a Casper-licensed shop and 5 years as a journeyman or master [2][3]
Plumbing contractor
Must employ a full-time licensed master plumber (Casper) or a master or qualified supervisor Cheyenne [2][3]
Renewal
Cheyenne licenses expire every year [2]
Moving within Wyoming
Local governments must recognize another Wyoming jurisdiction's active contractor license if the contractor passed an ICC exam or equivalent (W.S. 16-6-1101). The law defines a contractor as someone contracting with a property owner, so ask the city whether it covers your individual license [1]
On this page
  1. At a glance
  2. Starting from zero
  3. The license pathway
  4. Who licenses plumbers in Wyoming
  5. Cheyenne
  6. Casper
  7. Apprenticeships
  8. If you're licensed somewhere else
  9. Steps to get licensed
  10. Where to get the hours
  11. Licensed in another state?
  12. Questions people ask

The license pathway in Wyoming

  1. 1

    Apprentice plumber (local license)

    • Cheyenne $10 application + $10 license; Casper $3
    • Cheyenne yearly, $5; Casper $3

    Lets you learn and assist under a licensed journeyman or master. Cheyenne allows no more than three plumbing apprentices per journeyman or master. In Casper the apprentice license is issued to your employer in your name and is valid only while you work there. [2][3]

  2. 2

    Residential journeyman (Cheyenne)

    • 4,000 hours on the job
    • 2 years of experience
    • Yes, the applicable journeyman exam
    • Yearly

    A Cheyenne license for journeyman-level work on residential buildings only, after 2 years and 4,000 hours as a licensed apprentice. You may supervise one apprentice. [2]

  3. 3

    Journeyman plumber (local license)

    • 8,000 hours on the job
    • 4 years of experience
    • Yes: Cheyenne uses ICC or other board-approved exams; Casper accepts ICC G27-N or G28-N
    • Cheyenne $50 application + $30 license; Casper $25
    • Cheyenne yearly, $15; Casper $15

    Lets you do plumbing work as an employee of a plumbing contractor. Cheyenne requires 4 years with 8,000 hours as a licensed apprentice; Casper requires a completed federally recognized apprenticeship or 4 years in a Casper-licensed plumbing shop. [2][3]

  4. 4

    Master plumber (local license)

    • 14,000 hours on the job
    • 7 years of experience
    • Yes: Casper accepts ICC G27-N; Cheyenne uses ICC or other board-approved exams
    • Cheyenne $50 application + $50 license; Casper $75
    • Cheyenne yearly, $25; Casper $37.50

    Needed to qualify a plumbing contractor. Cheyenne requires 8,000 hours as an apprentice plus 3 years and 6,000 hours as a journeyman (14,000 in all). Casper requires a completed federally recognized plumbing apprenticeship, or the equivalent of 4 years in a Casper-licensed plumbing shop and 5 years as a journeyman or master in one. [2][3]

  5. 5

    Plumbing contractor (local license)

    • Casper $300
    • Casper $150

    A business license. In Casper the company must employ a full-time licensed master plumber and carry liability insurance; in Cheyenne a plumbing contractor holds a Class C1 license and must employ a master or qualified supervisor. [2][3]

Who licenses plumbers in Wyoming

Plumbing licenses in Wyoming are issued by local governments. A state law passed in 2024, W.S. 16-6-1101, says each county, city, town or other government entity that licenses contractors must recognize a contractor license issued by another one in Wyoming, if the license is active and in good standing and you show you passed the ICC "contractor, plumbing, mechanical or another appropriate examination, or an equivalent."

This page covers Wyoming's two largest licensing programs, Cheyenne and Casper. If you'll work elsewhere, ask that city or county's building department what it requires. [1][2][3]

Cheyenne

The Cheyenne Contractor Licensing Board licenses plumbing contractors and the people who work for them. For plumbing, "all employees on a job site are required to hold a master, journeyman or apprentice license or be a qualified supervisor."

Exams are given by the ICC, NICET, NASCLA or other agencies the board approves. The fee table lists $10 application and $10 license fees for an apprentice ($5 renewal), $50 and $30 for a journeyman ($15 renewal) and $50 and $50 for a master ($25 renewal). Licenses expire one year after issue. Call (307) 637-6265 with questions. [2][4]

Casper

Casper's Community Development Department issues plumbing licenses.

Casper also issues gas utility installer and utility installer licenses. Call the Building Inspection Division at (307) 235-8254. [3][5]

Apprenticeships

UA Plumbers and Pipefitters Local 192 in Cheyenne serves all of Wyoming. Its five-year program combines full-time work for contractors with evening classes three times a week: at least 8,500 hours of on-the-job training and 1,230 hours of related instruction, covering trade math, welding, medical gas, steam, hydronics and air conditioning. Requirements: age 18, a diploma or GED, birth certificate and driver's license. As of October 2026, its page says upcoming interviews haven't been scheduled yet.

You can also learn the trade by working for any licensed plumbing contractor as a licensed apprentice. Search registered programs on the U.S. Department of Labor Apprenticeship Finder. See also how to get an apprenticeship and helper jobs. [6][7][8][9]

If you're licensed somewhere else

Within Wyoming, W.S. 16-6-1101 requires local governments to recognize each other's contractor licenses if you passed an ICC or equivalent exam; they can still ask for any proof of financial assurance they require and deny a license they previously revoked. Casper offers a reciprocal license for people licensed in another Wyoming jurisdiction.

Cheyenne's board "may grant reciprocity with other State jurisdictions" case by case and may accept other exams from people holding an equivalent license elsewhere. There is no statewide plumbing reciprocity list. See our reciprocity guide. [1][2][10]

Steps to get licensed in Wyoming

  1. Find a job or apprenticeship

    Apply to plumbing contractors, or to the UA Local 192 apprenticeship, which takes applications, interviews and ranks applicants. [8]

  2. Get the apprentice license where you work

    Cheyenne requires a licensed apprentice for every plumbing worker; apply on the city's OpenGov portal. In Casper your employer obtains the apprentice license in your name. [2][3][4]

  3. Document your hours

    Cheyenne requires all dates and hours to be verified by a third party and recommends its Dates/Hours verification form. Casper asks for notarized experience affidavits. [2][5]

  4. Pass the journeyman exam

    Casper accepts ICC exam G27-N or G28-N. Cheyenne's board keeps a list of approved ICC, NICET, NASCLA or other exams; you apply and pay the testing agency directly. [2][3]

  5. Apply for the journeyman license

    Submit the application, experience proof and exam results. In Casper, don't send payment with the application; pay after the building official approves it. Cheyenne licenses renew every year. [2][5]

Where to get the hours

Programs that train plumbers in or for Wyoming, from their own official pages. Listed by type, not ranked.

Licensed in another state?

We didn't find a reciprocity agreement published by the licensing office for this license. Ask the office how it treats an out-of-state license or experience before you apply.

Also listed by: New Hampshire (their own boards list Wyoming as a partner; check both sides before you move).

Open the reciprocity map · How reciprocity works

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WY Listed here (agreement or endorsement) Lists WY

Questions people ask

Does Wyoming have a state plumbing license?

We found no state plumber license. Cities, towns and counties license plumbers, and state law (W.S. 16-6-1101) makes them recognize each other's ICC-tested contractor licenses. [1][2][3]

How long does it take to become a journeyman plumber in Cheyenne?

4 years with 8,000 hours of documented experience as a licensed apprentice (or certified equivalent training), plus a passing exam. A residential-only journeyman license takes 2 years and 4,000 hours. [2]

Do plumber's helpers need a license in Wyoming?

In Cheyenne, yes: every worker on a plumbing job site needs at least an apprentice license. In Casper, the employer gets an apprentice license in the worker's name for $3. [2][3]

Sources (14)
  1. Wyoming Statutes Title 16, W.S. 16-6-1101 (contractor licenses; reciprocity), created by 2024 Enrolled Act 37 (SF0114), Wyoming Legislature. Accessed October 11, 2026.
  2. City of Cheyenne Contractor Licensing Regulations (Rev. 03/10/2026), City of Cheyenne Contractor Licensing Board. Accessed October 11, 2026.
  3. Plumbing, Mechanical, and Individual Contractor Licenses, City of Casper Community Development Department. Accessed October 11, 2026.
  4. Building Permitting & Licensing, City of Cheyenne. Accessed October 11, 2026.
  5. Contractor Licensing, City of Casper Community Development Department. Accessed October 11, 2026.
  6. UA Local 192 Plumbers and Pipefitters (home page), UA Plumbers and Pipefitters Local 192. Accessed October 11, 2026.
  7. Apprenticeship Program, UA Plumbers and Pipefitters Local 192. Accessed October 11, 2026.
  8. JATC Application, UA Plumbers and Pipefitters Local 192. Accessed October 11, 2026.
  9. Apprenticeship Finder, U.S. Department of Labor. Accessed October 11, 2026.
  10. Reciprocal Contractor Licenses, City of Casper Community Development Department. Accessed October 11, 2026.
  11. Vocational Resources (Forge Your Future), Wyoming Department of Workforce Services. Accessed October 11, 2026.
  12. Apprenticeship Expansion and Pre-Apprenticeship Pathways, Wyoming Department of Workforce Services. Accessed October 11, 2026.
  13. Career & Technical Education, Wyoming Department of Education. Accessed October 11, 2026.
  14. Dual & Concurrent Enrollment, Wyoming Department of Education. Accessed October 11, 2026.