Missouri to Hawaii: master plumber license reciprocity
Missouri does not issue a statewide master plumber license, so there is nothing to transfer. Here is Hawaii'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 journeyman or master license counted as equivalent experience, full Hawaii exam (all states)
Your out-of-state credentials give no advantage. You meet the destination's requirements from scratch.
Hawaii has no reciprocity or endorsement for master plumbers from any state. An applicant who has been licensed as a journey worker or master-level plumber for at least two years in another county, state, or country whose licensure requirements the Board finds substantially equivalent to Hawaii's meets the 'equivalent experience in the trade' prerequisite for the Master Plumber (PM) exam without first holding a Hawaii journey worker plumber license for two years; the Board makes that determination when it reviews the application. The applicant files the $40 application with notarized Experience Verification forms from the licensed plumbers under whom the work was done (or the licensed contractor, where that state licenses only contractors), License Verification forms from every jurisdiction where a license has ever been held, and, after Board approval at one of its bi-monthly meetings, registers with PSI for the Hawaii master plumber exam based on the UPC. On passing, the plumber license fee is $306 in the first year of the plumber triennium, $204 in the second, and $102 in the third (2026 is a third year on the 06/2026 application table). No separate academic-coursework hour requirement applies to plumbers. Contracting still requires a separate HRS ch. 444 contractor license.
The Board publishes no list of states it considers substantially equivalent; equivalence is decided per application. An applicant whose out-of-state license is not accepted as equivalent would need two years registered as a Hawaii journey worker plumber first. The current PSI examination fee is not printed on the 06/2026 DCCA form; the 2018 FAQ listed $90 for plumbers. Current UPC edition used on the PM exam was not confirmed (2018 FAQ cited the 2006 UPC). Plumber on-time renewal dollar amounts were blank on the Board page retrieved 2026-09-16.
At a glance
- Trade exam
- Required
- Law / code exam
- Not required
- Out-of-state hours
- Count toward eligibility
- Typical processing
- About 90 days
What you must already have
- You must have held your Missouri license for at least 2 years.Licensed as a journey worker or master-level plumber for at least two years in another county, state, or country whose licensure requirements are substantially equivalent to Hawaii's (HAR §16-80-3; HRS §448E-5(b)(6); 06/2026 application), in lieu of two years registered with the Board as a Hawaii journey worker plumber.
- License Verification form completed by every jurisdiction in which the applicant has ever held a license, showing any discipline
What you'll do to get licensed in Hawaii
- 1Application fee. Pay the application fee ($40). Non-refundable application fee payable to Commerce and Consumer Affairs.
- 2Other. Notarized Experience Verification form(s) - Plumber Only, signed by each licensed plumber (or licensed contractor, where the origin state licenses only contractors) under whom the work was done.
- 3Trade exam. Pass the destination's trade exam. Hawaii Master Plumber examination administered by PSI Services, based on the Uniform Plumbing Code; Board approval required before registering.
- 4Exam fee. Pay the exam fee. Examination fee paid directly to PSI at registration (amount set in the PSI candidate bulletin; $90 in the Board's 2018 plumber FAQ).
- 5License fee. Pay the license or certificate fee ($102). Initial plumber license fee if licensed in the third year of the plumber triennium (July 1, 2026 to June 30, 2027 per the 06/2026 application table), including the compliance resolution fund fee; $306 in the first year of a triennium and $204 in the second. Do not send this fee with the initial application..
- 6Contractor license. Hold or obtain a contractor license (if applicable). Separate contractors license under HRS ch. 444 if the master plumber will contract for plumbing work; the PM license alone does not authorize contracting.
- 7Continuing education. Complete continuing education. For each triennial renewal of an Active PM license (next June 30, 2027): proof of a University of Hawaii community college course on updates to the 2021 UPC, or a board-prescribed UPC-update exam (HRS §448E-8.5(b)). Waived for the first renewal if the license was issued within one year of the expiration date; not required while Inactive..
Published fees on this path total $142, 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 Hawaii licenses master plumbers
Hawaii master plumber · “Master Plumber (PM)”
Statewide license
Issued by Hawaii Board of Electricians and Plumbers (DCCA Professional and Vocational Licensing Division)
Hawaii issues a statewide Master Plumber (PM) license through the Board of Electricians and Plumbers; it is the higher personal plumbing credential and, with the Journey Worker Plumber license, is what HAR §16-80-4 requires of anyone who directs, supervises, or performs plumbing work in or within five feet of buildings. Under HRS §448E-5(b)(6) a PM applicant must have been registered with the Board as a journey worker plumber for at least two years or have equivalent experience in the trade, and must pass the PSI-administered Hawaii master plumber exam. HAR §16-80-3 and the Board's application form define equivalent experience as having been licensed as a journey worker or master-level plumber for at least two years in another county, state, or country whose licensure requirements are substantially equivalent to Hawaii's, so an out-of-state journeyman or master license can satisfy the two-year prerequisite, but Hawaii does not reciprocate with any jurisdiction and the Hawaii exam is never waived. A contractor's license under HRS ch. 444 is separately required to contract for plumbing work. Licenses renew every three years by June 30 (2027, 2030, 2033) with a 2021 UPC update course for Active status.
Why Missouri has nothing to transfer
Missouri master plumber
Licensed by cities and counties
Missouri issues no statewide master plumber or plumbing contractor license. RSMo chapter 341 leaves plumber licensing to cities over 15,000 and first-classification counties, whose boards examine master plumbers, set fees and license terms and (in counties) require master plumber and master drainlayer surety bonds; no state agency licenses the trade and the voluntary statewide contractor license that exists for electrical work has no plumbing counterpart. The master credential therefore exists only locally: Springfield's Master Plumber certification (4 years as a certified journeyman or 10 years' experience, ICC exam, $50), Kansas City's plumbing contractor license qualified by a supervisor holding a certificate of qualification (Prometric or ICC exam, $60 application, $181 four-year renewal; contractor license $55 application, $181 issuance), St. Louis County's Master Plumber license and certified contractor list, and the City of St. Louis Plumbers and Drainlayers Board of Examiners' master plumber and drainlayer licenses. An out-of-state master plumber license carries no state-level recognition; Springfield accepts an identical ICC, Prometric, Experior or Block exam score of 75% or better in place of retesting and Kansas City may accept a comparable exam it deems equivalent, while the St. Louis County and City of St. A master arriving from another state should expect to qualify in each jurisdiction separately and then obtain that jurisdiction's contractor license and bond to pull permits.
How local licensing works in Missouri
How local licensing works. There is no state plumbing board. Under RSMo chapter 341, city boards of examiners (cities over 15,000) and county boards of plumbing and sewer inspection (first-classification counties) examine master plumbers; § 341.170 sets the county master plumber qualifications, § 341.180 the application fees, license terms and re-examination rules, and § 341.200 requires master plumbers and master drainlayers to post surety bonds. The master license is the credential that lets a plumber pull permits and run a plumbing business, and each jurisdiction issues and enforces its own.
St. Louis County. The Plumbing Licensing office (41 South Central Avenue, Clayton, 314-615-3741) issues Master Plumber licenses and publishes a Certified Contractors list; the Board of Plumbing Examiners meets the first Thursday of each month at 8:00 a.m., and renewals carry PEU continuing-education requirements. Louis.** The Building Division's Plumbers and Drainlayers Board of Examiners licenses master plumbers and drainlayers and reviews licensing matters and complaints for plumbing and drainlaying work in the city; permits are issued to city-licensed contractors. Every licensed contractor must employ a full-time supervisor who holds a Kansas City certificate of qualification in the plumbing trade, obtained on 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); the city 'may accept comparable examinations from other jurisdictions if deemed equivalent or superior'. Whether a separately titled master plumber license, plumbing-specific experience hours or named reciprocity with Kansas jurisdictions exist could not be confirmed because kcmo.gov and both fallback routes were blocked on 2026-09-16.
Springfield. Building Development Services certifies Master Plumbers: 4 years as a certified journeyman plumber or 10 years of satisfactory experience in the trade, documented on notarized employer experience forms and approved by the board (first Thursday monthly, 5:00 p.m., Busch Building; approval to test good for one year). The exam is the ICC master plumber exam through Pearson Vue (about $125 paid to Pearson Vue), 75% to pass; the certification card costs $50 with $50 annual renewal, and a master must file a Master Registration form to qualify a contracting business (Master Resignation form on leaving). Out-of-state treatment: 'Reciprocity from another jurisdiction' applicants submit the same experience documentation plus an exam score notification of 75% or better from Prometric, Experior, Block or ICC (Pearson Vue) for the identical exam Springfield requires; otherwise they test. Springfield also certifies Master Gas fitters (4 years as a certified gas journeyman, or 4 years as a master mechanic or plumber plus 2 years as a gas journeyman).
Columbia and others. Columbia, St.
- St. Louis County (Transportation and Public Works, Plumbing Licensing / Board of Plumbing Examiners)
- City of St. Louis (Building Division, Plumbers and Drainlayers Board of Examiners)
- Kansas City (City Planning and Development, contractor licensing and certificates of qualification)
- Springfield (Building Development Services, Trade Certifications)
- Columbia (Community Development, Building and Site Development)
Common questions
- Do I have to take the Hawaii master plumber exam if I'm licensed in Missouri?
- Yes. Hawaii requires the trade exam on this path.
- How long do I need to have held my Missouri license?
- At least 2 years before applying.
- What does it cost to get a Hawaii master plumber license from Missouri?
- Published fees on this path total $142, not counting exam vendor fees or bonds.
- Do my Missouri work hours count in Hawaii?
- Yes. Documented out-of-state experience counts toward Hawaii's eligibility requirements.
- How long does the application take?
- The board's published or typical processing time is about 90 days.
- Does it work the other way, from Hawaii to Missouri?
- Not necessarily. Reciprocity is directed. Going from Hawaii to Missouri, the mechanism is not applicable.
Sources
- DCCA PVL - Requirements for Examination and License, Electricians and Plumbers (Forms EP-00 / EP-01, rev. 06/2026) · HRS ch. 448E; HAR ch. 16-80 · Hawaii Department of Commerce and Consumer Affairs, Professional and Vocational Licensing Division · Form · verified September 16, 2026
- DCCA PVL - Board of Electricians and Plumbers · Hawaii Department of Commerce and Consumer Affairs, Professional and Vocational Licensing Division · Agency Page · verified September 16, 2026
- DCCA PVL - Electrician and Plumber Application Deadline and Examination Dates · Hawaii Department of Commerce and Consumer Affairs, Professional and Vocational Licensing Division · Agency Page · verified September 16, 2026
- DCCA PVL - Frequently Asked Questions, Electricians and Plumbers (July 2018) · Hawaii Department of Commerce and Consumer Affairs, Professional and Vocational Licensing Division · Faq · verified September 16, 2026
- DCCA PVL - Plumber Continuing Competency Requirements · Hawaii Department of Commerce and Consumer Affairs, Professional and Vocational Licensing Division · Agency Page · verified September 16, 2026
- Hawaii Administrative Rules Title 16, Chapter 80 - Electricians and Plumbers · HAR §§16-80-3, 16-80-4, 16-80-5, 16-80-6 · Hawaii Department of Commerce and Consumer Affairs · Admin Rule · verified September 16, 2026
- HRS §448E-5 - Minimum requirements (electricians and plumbers) · HRS §448E-5(b)(5)-(6) · Hawaii State Legislature · Statute · verified September 16, 2026
- HRS §448E-5.5 - Examination · HRS §448E-5.5 · Hawaii State Legislature · Statute · verified September 16, 2026
- HRS §448E-8.5 - Continued competency; license renewals · HRS §448E-8.5(b)-(c) · Hawaii State Legislature · Statute · verified September 16, 2026
Verified dates are when a person last opened each source and confirmed the facts above. Cite the board, not us.