Wyoming to Washington: journeyman plumber license reciprocity
Wyoming does not issue a statewide journeyman plumber license, so there is nothing to transfer. Here is Washington'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.
Out-of-state license review, then the Washington journey level exam (all states except Idaho)
Your out-of-state credentials give no advantage. You meet the destination's requirements from scratch.
A plumber licensed in any state other than Idaho emails L&I a copy of their active out-of-state plumbing license and government photo ID (or documentation of U.S. military plumbing experience) for review by the Plumber Certification Program. If L&I finds the license comparable to the Washington journey level certificate, the applicant is approved to apply for the Washington exam; the out-of-state license substitutes for the 8,000 trainee hours, but hours worked for out-of-state employers or in another state's apprenticeship program are never credited on their own. The applicant then files the exam application with the non-refundable $202.10 fee (online or form F627-008-000), schedules with PSI and pays PSI's scheduling fee, and passes the closed-book journey level exam (100 Uniform Plumbing Code questions plus waste-and-vent and water-pipe sizing exercises). After passing, the $242.70 certificate fee must be paid within 90 days. Once credentials are approved, a plumber with a current, unexpired out-of-state license may buy a one-time, nonrenewable 120-day temporary permit for $100.30 to work at their level while waiting to test.
experienceCreditsTransfer is true only in the sense that a comparable out-of-state license is accepted in place of Washington trainee hours; raw out-of-state hours are not credited (L&I exam page, trainee page). L&I does not publish the criteria it uses to judge a 'comparable license'. The Washington exam is a single closed-book trade exam that includes code questions; no separate law exam exists.
At a glance
- Trade exam
- Required
- Law / code exam
- Not required
- Out-of-state hours
- Count toward eligibility
What you must already have
- Your Wyoming license must be active and in good standing.
- L&I must find the out-of-state license comparable to the Washington journey level plumber certificate (or accept documented equivalent U.S. military plumbing experience) before the applicant may apply for the examination
- Hours worked for out-of-state employers and hours from out-of-state trainee or apprenticeship programs are not eligible for Washington certification; a plumber who lacks a comparable license must start as a Washington plumber trainee ($60/year) and accumulate 8,000 supervised hours
What you'll do to get licensed in Washington
- 1Application fee. Pay the application fee ($202.10). Journey level plumber examination application fee, non-refundable; approved application valid one year; a failed exam requires a new application and fee plus a 14-day wait.
- 2Trade exam. Pass the destination's trade exam. Washington Journey Level Plumber (PL01) examination administered by PSI after L&I approval: closed book, based on the Uniform Plumbing Code with Washington amendments, three parts (100 code questions, waste and vent sizing, water pipe sizing).
- 3Exam fee. Pay the exam fee. PSI examination scheduling fee, paid directly to PSI; amount set by contract and not published on L&I pages; non-refundable and valid one year from payment.
- 4Continuing education. Complete continuing education. 16 hours of L&I-approved classroom continuing education, including at least 4 hours of industry-related electrical training, before testing (WAC 296-400A-121(6)); confirm applicability with L&I for out-of-state applicants.
- 5License fee. Pay the license or certificate fee ($242.70). Journey level plumber certificate fee, invoiced after passing the exam and payable within 90 days; certificate valid 25-37 months then renews every three years for $242.70.
- 6Other. Optional one-time 120-day temporary permit for out-of-state plumbers whose credentials have been approved, allowing work at the journey level while waiting to take the Washington exam; not available to anyone who has held a Washington plumber or trainee certificate or a prior temporary permit ($100.30) (if applicable).
Published fees on this path total $444.80, 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
Continuing education
Renewals usually need approved CE hours, often on the latest NEC. Reciprocal licensees are rarely exempt.
- Continuing education
How Washington licenses journeyman plumbers
Washington journeyman plumber · “Journey Level Plumber (PL01)”
Statewide license
Issued by Washington State Department of Labor & Industries, Plumber Certification Program
Washington issues a statewide Journey Level Plumber (PL01) certificate of competency through the Department of Labor & Industries; anyone working in the plumbing trade must hold a journey level, specialty, residential service, trainee or temporary permit credential. A new applicant needs four years and at least 8,000 hours as a Washington plumber trainee (4,000 in commercial or industrial work), 16 hours of approved classroom education, and must pass the closed-book Washington journey level exam administered by PSI ($202.10 application fee plus PSI's scheduling fee, then a $242.70 certificate fee). Washington's only plumber reciprocity agreement is with Idaho for journey level plumbers: holders of an active Idaho journey level card receive the PL01 certificate without examination. Every other out-of-state plumber submits a copy of an active state license for L&I review; if L&I finds it comparable, the applicant is approved to sit the Washington exam and may buy a one-time 120-day temporary permit ($100.30) to work while waiting to test. Hours worked for out-of-state employers or in out-of-state apprenticeships are not credited. Certificates renew every three years on the holder's birthdate for $242.70 with 24 hours of continuing education (at least 12 hours of plumbing code and 4 hours of electrical).
Why Wyoming has nothing to transfer
Wyoming journeyman plumber
Licensed by cities and counties
Wyoming has no statewide plumber license at any level. The only state construction-trade licensing program is the State Fire Marshal's electrician program, which lists no plumbing or mechanical credential, so a journeyman plumber license exists only where a city ordinance creates one. Cheyenne, Casper, Laramie, Gillette and Sheridan each license journeyman plumbers (and apprentices) individually, all requiring four years or a completed apprenticeship plus an ICC National Standard plumbing exam (G28-N journeyman or G27-N master), while Jackson has stopped issuing journeyman cards altogether and Rock Springs only registers contractors. No city accepts another state's journeyman license: Casper, Gillette and Jackson reciprocate only with other Wyoming jurisdictions, Sheridan expressly refuses licenses from other cities or states, Cheyenne's Board keeps discretion but cites a state statute limiting reciprocity to Wyoming jurisdictions, and Laramie's building official may waive the exam for a certificate from any governmental agency whose exam is judged at least equal. An out-of-state journeyman should expect to document their hours, present or sit the ICC exam through Pearson VUE, and apply separately in each city where they will work.
How local licensing works in Wyoming
How local licensing works. Wyoming licenses electricians through the State Fire Marshal but has no plumbing board, so plumber licensing is entirely a matter of city ordinance and each city sets its own classes, hours, exam and fees. The reciprocity statute the cities cite reaches only licenses issued by other Wyoming jurisdictions; none of the cities below publishes a path that recognizes another state's plumber license.
Cheyenne. The Contractor Licensing Board licenses Plumbing (Class C1, tested) contractors and requires every employee on a plumbing job site to hold a master, journeyman or apprentice license. A journeyman (12.1.9) documents 4 years/8,000 hours as a licensed apprentice (or certified equivalent training) and passes a current ICC, NICET or NASCLA exam from the Board's list, paid to the testing agency; a Residential Plumbing Journeyman (12.1.11) needs 2 years/4,000 hours and may work only on IRC residential structures at a 1:1 apprentice ratio. Fees: $50 application plus $30 initial and $15 renewal (apprentice $25 + $25, $15 renewal); licenses expire annually. Up to three apprentices may work under one journeyman or master. Trade employees registered for the exam can get a one-time 30-day temporary work authorization (60 days maximum). Reciprocity (3.3.2): the Board 'may grant reciprocity with other State jurisdictions and agencies as the Board determines appropriate', notes that Wyoming's statute allows reciprocity for Wyoming jurisdictions only, evaluates even those case by case, and may accept a test exceeding its published exams from someone holding a current equivalent license elsewhere - no partner list is published.
Casper. The Community Development Department issues Journeyman Plumber licenses ($25 new, $15 renewal) to applicants with a federally recognized plumbing apprenticeship or the equivalent of four years in a Casper-licensed plumbing shop plus proof of passing ICC G27-N or G28-N (or equivalent); apprentice licenses ($3) are issued to the contractor in the apprentice's name. Reciprocal Plumbing Master/Journeyman licenses ($50/$25) exist only for holders of a current, good-standing license from another Wyoming jurisdiction with comparable testing.
Laramie. A journeyman plumbing certificate of qualification requires four years' employment with a licensed plumbing contractor (Table 15.24.020-1) and the building official's examination; the application fee is $5 per exam attempt, and a failed exam bars retesting for 30 days (six months after a second failure). In lieu of the exam, the building official may issue the certificate to anyone presenting a valid certificate from 'any other governmental agency giving an examination' that the board of examiners considers at least equal - the only Wyoming city whose rule is not limited to Wyoming jurisdictions. Journeymen work only under a certified master, each journeyman or master may supervise two apprentices, certificates expire December 31 (renew by January 31), and applications go through the Civic Access portal.
Gillette. Journeyman Plumber ($25 new, $25 renewal) requires four years of approved experience and passing ICC examination results (5-III-21/22); the ICC computer-based exam is taken through Pearson VUE. Apprentices ($5) qualify after 30 days with a Gillette-licensed plumbing contractor, and one master or journeyman supervises up to three apprentices. Reciprocity (5-III-1(d), effective July 1, 2024) is granted without fee only to active, good-standing licenses of a similar class from another Wyoming city, county or town, with testing waived on proof of the ICC plumbing exam.
Sheridan. Journeyman Plumber ($50 new, $50 annual renewal) requires four years of journeyman plumber experience (Form JP) or a completed approved four-year apprenticeship and the 2018 ICC G28 Journeyman Plumber with Gas exam; one licensed contractor or journeyman is required per three apprentices. The City's FAQ states it 'does not accept licensing from other cities, towns, counties, or states as a means to obtain licensing locally'. Applications go through the OpenGov portal.
Jackson. The Town no longer issues or requires Apprentice or Journeyman Certificate of Qualification cards; only Master COQ cards are issued. A journeyman-level plumber works in Jackson as an employee of a Town-licensed plumbing contractor whose Master of Record holds a Master COQ, and needs no individual Town card.
Rock Springs. The Building Inspection Office registers contractors ($125 fee plus a certificate of insurance) and licenses no individual plumbers; no exam or hours are required.
- Cheyenne (Contractor Licensing Board / Building Safety Department)
- Casper (Community Development Department)
- Laramie (Code Administration)
- Gillette (Building Inspection Division / Board of Examiners)
- Sheridan (Building Division)
- Jackson (Planning & Building Department)
- Rock Springs (Building Inspection Office)
Common questions
- Do I have to take the Washington journeyman plumber exam if I'm licensed in Wyoming?
- Yes. Washington requires the trade exam on this path.
- What does it cost to get a Washington journeyman plumber license from Wyoming?
- Published fees on this path total $444.80, not counting exam vendor fees or bonds.
- Do my Wyoming work hours count in Washington?
- Yes. Documented out-of-state experience counts toward Washington's eligibility requirements.
- Does it work the other way, from Washington to Wyoming?
- Not necessarily. Reciprocity is directed. Going from Washington to Wyoming, the mechanism is not applicable.
Sources
- L&I - Get or Renew Your Plumber Certification · Washington State Department of Labor & Industries · Agency Page · verified September 16, 2026
- L&I - Plumber Certification (becoming a plumber, certification requirements) · Washington State Department of Labor & Industries · Agency Page · verified September 16, 2026
- L&I - Plumber Examination (in-state and out-of-state applicants, temporary permit) · Washington State Department of Labor & Industries · Agency Page · verified September 16, 2026
- L&I - Plumber Trainee · Washington State Department of Labor & Industries · Agency Page · verified September 16, 2026
- RCW 18.106.040 - Examinations - Eligibility requirements - Determination · RCW 18.106.040 · Washington State Legislature · Statute · verified September 16, 2026
- WAC 296-400A-030 through -033 - Temporary permits for out-of-state plumbers · WAC 296-400A-030, -031, -032, -033; RCW 18.106.090 · Washington State Legislature · Admin Rule · verified September 16, 2026
- WAC 296-400A-045 - Plumber certification and plumbing contractor fees · WAC 296-400A-045 · Washington State Legislature · Admin Rule · verified September 16, 2026
- WAC 296-400A-121 - Trainee experience and plumber examination requirements for the journey level and specialty plumber · WAC 296-400A-121 · Washington State Legislature · Admin Rule · verified September 16, 2026
Verified dates are when a person last opened each source and confirmed the facts above. Cite the board, not us.