Wisconsin · plumber licensing · verified July 2026

Wisconsin plumber license requirements

Do you need a license to work as a plumber in Wisconsin?

Wisconsin licenses plumbers statewide, so one credential is valid across the whole state.

Wisconsin has no fixed-state reciprocity list; out-of-state applicants use the comity paths on Form 3126/3129 (all still require the Wisconsin exam except as provided). Additional restricted tiers exist (Journeyman/Master Plumber Restricted Appliance and Restricted Service, renewing at the same $180/$500 4-year rates; Plumber-Restricted Service; Plumbing Learner tiers), and a Wisconsin Master Plumber may exchange the license for a Journeyman license. In-state apprenticeship program length/hours are set by DWD apprenticeship standards rather than stated on DSPS forms (the 5-year/576-hour figures are the explicit requirements for out-of-state programs).

What licenses does Wisconsin issue?

The Wisconsin Department of Safety and Professional Services (DSPS) - Division of Professional Credential Processing (plumbing program) issues the credentials below for this trade. Boards often list further classes for specialties and business licenses; these are the ones this page covers.

Hours are what each class asks for on its own terms. Where a senior class shows fewer than a journeyman, the board is counting time served after the earlier license rather than from the start; the prerequisite column says which.

Source: Wisconsin Department of Safety and Professional Services (DSPS) - Division of Professional Credential Processing (plumbing program) (dsps.wi.gov). Verified July 2026.

Journeyman Plumber: Completion of a recognized plumbing apprenticeship (out-of-state programs must be 5-year with at least 576 hours of related instruction)

Master Plumber: At least 1,000 hours/year as a licensed WI journeyman plumber for at least 3 years (3,000+ hours total), or qualifying engineering degree

What exam does Wisconsin require?

Journeyman Plumber license examination (eligibility granted by DSPS after application review; retake requires new exam fee). Administered by Wisconsin DSPS (applied for and paid through the LicensE portal, license.wi.gov).

Master Plumber license examination. Administered by Wisconsin DSPS (applied for and paid through the LicensE portal, license.wi.gov).

How much does a Wisconsin plumber license cost?

Wisconsin sets its fees per license class rather than as one figure for the trade, so no single total would be true of every applicant. The published items are below exactly as the board sets them.

• Renewal fee (recurring)set per license class

Source: fee schedule (dsps.wi.gov). Verified July 2026.

How often do you renew, and what continuing education is required?

Renewal period: 4 years for Journeyman and Master Plumber (renewal date March 31); 1 year for Plumbing Apprentice (from date of issuance)

Continuing education: Journeyman Plumber and Master Plumber: at least 24 hours of acceptable continuing education within each 4-year renewal period, required before license expiration (Wis. Admin. Code SPS 305.92 and SPS 305.94); a $25 late-CE fee applies per the DSPS trades renewal schedule. Restricted (service/appliance) tiers have lower hour requirements. No CE is required for the annual Plumbing Apprentice registration.

Source: renewal requirements (dsps.wi.gov). Verified July 2026.

How does the apprenticeship route work?

Apprenticeship is the primary route: apprentices hold an annually renewed DSPS Plumbing Apprentice license while completing a program registered with the Wisconsin Bureau of Apprenticeship Standards (DWD, Wis. Stat. 106.025) or US DOL; a completion letter from the Bureau is required to sit for the journeyman exam. Journeyman hours then count toward master (1,000 hours/year for 3+ years, documented per-witness on Form 3129T).

Which states does Wisconsin have license reciprocity with?

No published agreement for this trade names Wisconsin. That is not the same as a closed door: states without a published list usually take out-of-state applicants through an endorsement or equivalency review instead, decided case by case on the requirements set out above.

How does Wisconsin compare to neighboring states?

Requirements stop at the state line, which matters if you live near one or expect to move. Here is what the neighboring states ask of the same trade.

Source: state licensing boards. Verified July 2026.

Sources and verification

Other states with published requirements for this trade: Wyoming, Alabama, Alaska, Arizona.

Price the whole path with the license cost estimator, or weigh earning against paying for school with the apprenticeship comparison. Back to plumbers overview.

Licensing requirements change between our verification sweeps. This page is informational only, so confirm current requirements with Wisconsin Department of Safety and Professional Services (DSPS) - Division of Professional Credential Processing (plumbing program) before making decisions. Not legal advice.