How to get a plumbing contractor license in Wisconsin
Wisconsin plumbing contractor licensing covers hours, prerequisites, exam path, fees, and renewal. Confirm current rules on the board source before you apply.
Verified on: 2026-09-14 · Board source
From the board
- Wisconsin Legislature: 145.08 145.06(1)(1) 145.06(1)(a)(a) No person may engage in or work at plumbing in the state unless licensed to do so by the department.
- A master plumber may work as a journeyman.
- No person may act as a plumbing apprentice or pipe layer unless registered with the department.
- 145.06(1)(b)(b) No public utility shall engage in or perform plumbing unless exempted by sub.
- 145.06(2)(2) No person shall install plumbing unless at all times a licensed master plumber is in
- Board page: Wisconsin Legislature: 145.08
Requirements overview
- Wisconsin sets experience, education, and exam rules for plumbing contractor applicants
- Documented OJT or apprenticeship hours are common for journeyman / technician paths
- Master and contractor tracks usually add experience, exams, and firm paperwork
- Confirm current hour totals, affidavits, and fees on the state board before you apply
Exam
- See the Wisconsin plumbing exam guide for vendor, scheduling, and prep
- LicenseFlo helps with paperwork and reminders — we do not sit the exam
Renewals
- Most credentials renew on a fixed cycle with mandatory CE or training
- Roster watch → intake → assemble → sign → submit
Related: Exam · Renewal and CE
Have LicenseFlo do it
From $79 per event. Text once; we collect photos, assemble the packet, and send a one-tap signature.