Overview
Wyoming is a local-control plumbing state. I did not find a statewide Wyoming journeyman plumber, master plumber, or plumbing contractor license in the official state sources used for this page. The state licenses electrical workers through the State Fire Marshal's Electrical Safety program, but plumbing runs through local building departments.
The state law frame supports that model. Wyoming cities and towns can license, tax, and regulate businesses, regulate sewers and drains, and adopt national fire prevention, building, plumbing, and electrical codes by reference under Wyoming Statutes Title 15.
So the licensing question starts with the job address. A plumber working in Cheyenne follows Cheyenne's Building Permitting and Licensing process. A plumber working in Casper follows Casper's Community Development contractor licensing process. Work outside a city may fall to the county or local code office for that address.
The Local Licensing Model
The local model changes the order of work. In a statewide licensing state, the plumber gets the state credential first and then pulls local permits. In Wyoming, the local permit office can be the licensing office, code office, and inspection office for the same job.
Cheyenne's Building Permitting and Licensing page says the department issues construction-related permits and provides plan review and inspection for building, plumbing, mechanical, and electrical construction inside city limits. It also says company licenses come in pairs: a company license and an Individual Qualified Supervisor license.
Casper's contractor licensing page says Plumbing/Mechanical/Individual Contractor License applications must include a completed application, notarized experience affidavits, and proof of testing, then go to the Chief Building Official for review.
License Types You Will See
Because Wyoming does not publish one statewide plumbing ladder in the sources used here, license names vary by city. Cheyenne uses a company license plus Individual Qualified Supervisor structure. Casper uses Plumbing, Mechanical, and Individual Contractor Licenses, plus reciprocal contractor application materials. Those are local categories, not state tiers.
I would not write Wyoming as apprentice to journeyman to master unless the city or county handling the job uses those words in its own ordinance or application. Some jurisdictions ask for an ICC exam. Some accept a prior municipal license. Some build the license around a qualified supervisor who stands behind the company.
The plumbing code is local too. Title 15 lets cities and towns adopt national plumbing codes by reference, but later code updates are not automatic unless adopted by ordinance.
Experience and Testing
There is no statewide Wyoming plumbing hour requirement in the official sources used for this page. Casper's published contractor licensing page requires notarized experience affidavits and proof of testing for plumbing, mechanical, and individual contractor license applications. That proves experience and testing are part of at least one major city process, but the public page does not print a universal statewide number.
Cheyenne's public page is built around the company and Individual Qualified Supervisor pairing. The details live in its OpenGov license application flow and contractor licensing regulation. Since the public page does not print one statewide hour total, this guide does not claim one.
Keep license history, test results, employer letters, project history, insurance certificates, and affidavits ready. Wyoming's local offices can ask for that file city by city.
Permits, Fees, and Timeline
Permits and inspections are the center of the Wyoming plumbing process. Cheyenne handles permits, plan review, and inspections for plumbing construction inside city limits. Casper puts contractor licensing inside Building and Inspections and routes applications through Community Development review.
There is no statewide plumbing license fee schedule in the official sources used for Wyoming. Fees are local. Cheyenne links its building permit fee schedule and contractor license applications from the Building Permitting and Licensing page. Casper's public page says payment should not be sent with the application; after the Building Official approves the file, the applicant provides insurance and pays the license fee before issuance.
For budgeting, build a jurisdiction-by-jurisdiction table for the places where the company will work. Include business license costs, contractor license costs, permit fees, plan review fees, inspection fees, and renewal dates.
Reciprocity
Wyoming has no statewide plumbing reciprocity route in the official sources used for this page because there is no statewide plumbing credential shown there. Reciprocity, where it exists, is local. Casper publishes reciprocal contractor materials alongside its plumbing and mechanical contractor applications, so Casper has a local process for applicants bringing outside credentials.
That local reciprocity does not settle the rest of the state. A contractor moving from Colorado, Utah, Montana, or another Wyoming city still needs to satisfy the jurisdiction where the work sits. The city can ask for prior license verification, exam records, experience affidavits, insurance, and payment before issuing its own license.
Treat reciprocity as a city application path, not a state entitlement. If the city has a reciprocal contractor application, use it. If it does not, expect the standard local license process.
FAQ
Does Wyoming have a statewide plumbing license? I did not find a statewide journeyman, master, or plumbing contractor license in the official sources used for this guide. Plumbing licensing is handled locally through cities, towns, counties, or the local code office.
Who issues plumbing licenses in Cheyenne? Cheyenne's Building Permitting and Licensing office handles construction permits, plan review, inspections, and contractor licensing inside city limits. Company licenses pair with an Individual Qualified Supervisor license.
Who issues plumbing licenses in Casper? Casper's Community Development Department reviews Plumbing, Mechanical, and Individual Contractor License applications through Building and Inspections. The public page requires a completed application, notarized experience affidavits, and proof of testing.
Are Wyoming plumbing fees statewide? No statewide plumbing fee schedule was found in the official sources used. Fees are local, and the license or permit office for the job address sets the amount and timing.