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PLUMBING x WYOMING

Plumbing contractor requirements in Wyoming.

No Wyoming statute licenses plumbers or plumbing contractors statewide. Plumbing licensing, where it exists, is local, and W.S. 16-6-1101 requires a Wyoming city, town, or county to recognize another Wyoming jurisdiction's active, good-standing license when the plumber shows a passing ICC plumbing exam or equivalent — without retesting. Plumbing permits and inspections come from the jurisdictions that have taken code enforcement authority from the State Fire Marshal (W.S. 35-9-121).

One narrow state license touches the trade: under W.S. 33-42-103(f) it is unlawful to construct, alter, or rehabilitate a water well or install pumping equipment in a water well without a license from the state board of examining water well drilling contractors and water well pump installation contractors, unless exempt. Plumbing contractors that employ workers must also carry Wyoming workers' compensation (construction is extrahazardous employment) and send a preliminary lien notice before taking any payment.

STATE LICENSE
ConditionalState Board of Examining Water Well Drill…
STATUTE
W.S. 33-42-103 (well pump installation); W.S. 16-6-1101 (local license reciprocity)
RENEWAL
No state license to renew; local licenses renew on the issuing jurisdiction's cycleNone at the state level for this trade
VERIFIED
October 2026Official sources
FILE · PLUMBING x WYOMING
Compliance Dossier
Public
File
October 2026
STATE AUTHORITYState Board of Examining Water Well Drilling Contractors and Water Well Pump Installation Contractors (well pumps only)
STATUTE / CODEW.S. 33-42-103 (well pump installation); W.S. 16-6-1101 (local license reciprocity)
SCOPEStatewide · Wyoming
RENEWALNo state license to renew; local licenses renew on the issuing jurisdiction's cycle
CONTINUING ED.None at the state level for this trade
LOCAL OFFICES1 counties on file
FILE PLUMBINGSCOPE STATEWIDE · WYOMINGTYPE VERIFIED RULE FILE
VERIFIED October 2026STATUS PUBLIC REFERENCE
What this file settlesThe Wyoming rules for plumbing contractors, verified against official sources.
LICENSE TRUTH
Wyoming has no state plumbing license — plumbers and plumbing contractors are licensed by cities and counties — and the only state credential near the trade is the water well pump installation contractor license.
STATE ↔ LOCAL
Wyoming has no statewide license for this trade, so contractor licensing is local. Cities, towns, and counties that license contractors set their own classes, exams, and bonds, but W.S. 16-6-1101 requires each of them to recognize an active, good-standing license issued by another Wyoming jurisdiction when the contractor shows a passing International Code Council (or equivalent) exam — with no retesting, though the accepting jurisdiction may require its own proof of financial assurance. Building codes are enforced by municipalities and counties that have taken delegated authority from the State Fire Marshal (W.S. 35-9-121), and any electrical work stays with state-licensed electrical contractors (W.S. 35-9-123).
EVERY CLAIM SOURCED
Each requirement below carries its citation and official source. Facts we could not confirm are listed as pending — never asserted.
§ 01 · Permit Stack

How plumbing work is governed in Wyoming.

The state sets the license floor; the county or city permit office controls filing, inspections, and local rules wherever the job site sits.

STATE — NO TRADE LICENSE
Wyoming Statutes (Titles 27, 29)
NO STATE LICENSEWORKERS' COMPPRELIMINARY LIEN NOTICE
STATE — NARROW CREDENTIAL
Water well board (W.S. 33-42-103)
WELL PUMP INSTALLER LICENSEONLY FOR WATER WELLS
LOCAL — WHERE YOU WORK
City / county (W.S. 16-6-1101, 35-9-121)
LOCAL CONTRACTOR LICENSEBUILDING PERMITINSPECTIONS

Read it bottom-up.

Wyoming has no statewide license for this trade, so contractor licensing is local. Cities, towns, and counties that license contractors set their own classes, exams, and bonds, but W.S. 16-6-1101 requires each of them to recognize an active, good-standing license issued by another Wyoming jurisdiction when the contractor shows a passing International Code Council (or equivalent) exam — with no retesting, though the accepting jurisdiction may require its own proof of financial assurance. Building codes are enforced by municipalities and counties that have taken delegated authority from the State Fire Marshal (W.S. 35-9-121), and any electrical work stays with state-licensed electrical contractors (W.S. 35-9-123).

The local offices section below names the exact permit desk for every Wyoming county on file.

Source · State Board of Examining Water Well Drilling Contractors and Water Well Pump Installation Contractors (well pumps only)Last verified · October 2026
§ 02 · Specs Ledger

Every requirement, with a number on it.

Each row names the issuing authority, cost, timeline, citation, and status behind the requirement — verified against the official source.

RequirementIssued byCostTimeCitationStatus
Local Contractor LicenseWhere the city or county licenses contractors; other Wyoming jurisdictions must recognize it with ICC exam proof
City / county
Set locally
Before bidding in that jurisdiction
W.S. 16-6-1101(b)
CONDITIONAL
Workers' Compensation CoverageConstruction (NAICS sector 23) is extrahazardous employment. Employers must apply and receive a statement of coverage before starting work
Wyoming Department of Workforce Services
By payroll
Before starting work
W.S. 27-14-108(a)(ii)(D); 27-14-207(a)
CONDITIONAL
Preliminary Lien NoticeNotice of lien rights to the record owner before any payment (subs: within 30 days of first work); missing it bars your lien
You
$0
Before first payment
W.S. 29-2-112(a)
REQUIRED
Building Permit + InspectionsFrom the city or county where it holds delegated code authority
City / county building official
Set locally
Per project
W.S. 35-9-121
CONDITIONAL
Licensed Electrical Contractor for any wiringAll electrical equipment is installed by licensed electrical contractors; owner-occupant and farm exemptions do not cover contractors
DFPES
Electrician's rate
Per job
W.S. 35-9-123(a)–(b)
CONDITIONAL
Water Well Pump Installation Contractor LicenseOnly to install pumping equipment in water wells; drilling is a separate license
State water well contractors board
Set by board rule
Before well pump work
W.S. 33-42-103(c), (f)
CONDITIONAL
§ 03 · Year-One Cost

What it costs to start plumbing in Wyoming.

Published fees from the issuing authorities, as of October 2026. Local permit fees vary by project and jurisdiction — the basis is stated where a flat number does not exist.

Year-one ledger
Wyoming · Plumbing
State trade licenseWyoming issues none for this trade$0
Local contractor licenseOnly where the city or county requires oneSet locally
Workers' compensationState coverage through DWS for employersBy payroll
General liabilityNo state minimum for this tradeMarket premium
Year-one floor$0 state + local license fees
Excludes tools, vehicle purchase, payroll, and marketing.
NOTE
No state license

Wyoming issues no state license for this trade; the license you need, if any, comes from the city or county where the job is.

NOTE
Keep your ICC exam proof

Another Wyoming jurisdiction must recognize your local license without retesting if you show a passing ICC or equivalent exam (W.S. 16-6-1101(b)(ii)).

NOTE
Well pumps are different

Installing pumping equipment in a water well needs the state pump installation contractor license; drilling and pump installation are licensed separately (W.S. 33-42-103(c)).

§ 04 · Path to First Job

From day zero to first inspection.

A practical sequence for a new plumbing contractor in Wyoming. Actual agency processing times are noted in the ledger above.

1
STEP 1
Form the business entity + EIN
Wyoming Secretary of State / IRS
2
STEP 2
Workers' comp statement of coverage
Department of Workforce Services
3
STEP 3
Local plumbing / contractor license where required
City / county
4
STEP 4
Preliminary lien notice before first payment
To the record owner
5
STEP 5
Pull permits + schedule inspections
City / county building
§ 05 · Compliance Checklist

Check them off.

Each item names the issuing authority, cycle, and citation.

01
Check each city's license
Licensing is local; ask every city or county you work in, and carry ICC exam proof so another Wyoming jurisdiction's license is recognized without retesting.
LOCALESSENTIALW.S. 16-6-1101(b)
City / countyIssuing authority
02
Cover workers before work starts
An employer in extrahazardous employment may not commence work in Wyoming without applying for coverage and receiving a statement of coverage.
STATEINSURANCEW.S. 27-14-207(a)
DWSIssuing authority
03
Send the lien notice first
Prime contractors send the preliminary notice before receiving any payment, including advances; subs within 30 days of first work. Late notice bars the lien.
STATELIEN RIGHTSW.S. 29-2-112(a)(ii)–(iii)
YouIssuing authority
04
Sub out the wiring
Electrical installations must be made by a licensed electrical contractor; the owner-occupant exemption never covers a contractor working for that owner.
SCOPESPLIT RULEW.S. 35-9-123(a)–(b)
Licensed electricianIssuing authority
05
License well pump work
Do not install pumping equipment in a water well without the state pump installation contractor license unless an exemption applies.
STATESCOPEW.S. 33-42-103(f)
Water well boardIssuing authority
§ 06 · Enforcement

What the law does about unlicensed plumbing work.

Statutory consequences with their citations — not estimates, not “commonly cited” guesses.

§
W.S. 29-2-112(a)(iii)Statute

No preliminary notice, no lien

A contractor, subcontractor, or materialman who does not send the preliminary notice within the time required loses the right to assert a construction lien.

ConsequenceLien rights barred
§
W.S. 27-14-203(a), (c)Statute

Uninsured employer

An employer that does not apply for coverage is liable to the state for every award paid and reserved for an injured employee; unpaid premiums carry interest.

ConsequenceLiability for all awards + 1% per month interest
§
W.S. 35-9-130(c)Statute

Unlicensed electrical work

Installing electrical equipment without being, or employing, a licensed electrical contractor violates the electrical act.

ConsequenceCivil penalty up to $500 first offense, $1,000 for a repeat within 3 months
§ 07 · Local Offices

Where the permit is filed, county by county.

Inside city limits, the city office listed here issues the permit; the county office serves unincorporated areas. Every office links to its official page.

§ 08 · Wyoming FAQ

Questions plumbing contractors ask about Wyoming.

Q01Do I need a state plumbing license in Wyoming?+
No. Wyoming has no state plumbing license; plumbers and plumbing contractors are licensed by the city or county where they work, and W.S. 16-6-1101 requires Wyoming jurisdictions to recognize each other's licenses when you show a passing ICC plumbing exam.
Q02Can a Wyoming city require its own contractor license?+
Yes. Licensing is local in Wyoming, but W.S. 16-6-1101 requires every county, city, and town that licenses contractors to recognize an active, good-standing license from another Wyoming jurisdiction when you show a passing ICC (or equivalent) exam — no retesting, though it may require its own financial assurance and may deny a contractor it previously revoked or suspended.
Q03Is any plumbing-adjacent work licensed by the state?+
Yes, water wells. Installing pumping equipment in a water well requires a state water well pump installation contractor license (W.S. 33-42-103(f)), separate from the water well drilling contractor license.
§ 09 · Sources

Primary authorities, not secondary summaries.

Every fact in this file was checked against these official sources on October 2026.

Pending verification: Local contractor licensing classes, exams, bonds, and fees in Cheyenne / Laramie County, Casper, Gillette, and other Wyoming cities and counties (local programs, outside this state-level record) · 2024–2026 session laws were not reviewed bill by bill (the wyoleg.gov bill-information service timed out); statute text was read from the Title PDFs compiled May 8, 2026 · Water well pump installation contractor license fees, exam, and the board's current web address (W.S. 33-42 read; board rules and site not retrieved) · Whether the state adopts a plumbing code that applies in jurisdictions without local code enforcement

General information, not legal advice. Always confirm requirements, deadlines, and forms with the issuing authority before filing or contracting.

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