Do you need a license to work as a plumber in Wisconsin?
Yes. In Wisconsin, plumbing work requires a state plumbing license, and every plumbing installation must have a licensed master plumber in charge. Licenses are issued by the Department of Safety and Professional Services, only to individuals, and apprentices must be registered with the department. Minor repairs to faucets, valves, pipes or appliances and clearing stoppages are exempt, as is plumbing by an owner in a one-family building the owner occupies as a home unless a local ordinance requires a license. This is Wis. Stat. §§ 145.06, 145.01.
| What | Wisconsin |
|---|---|
| Plumber license | State plumber license (Safety and Professional Services) |
Source
Read the statute in the Wisconsin Statutes (Wisconsin State Legislature): docs.legis.wisconsin.gov.
Checked against the statute on November 13, 2026.
This is a summary of a published statute, not legal advice. Rules change, local ordinances can add to them, and the terms of a specific lease may differ. Check the citation and speak to a lawyer before acting.
How Seayora uses this rule
A contractor on Seayora keeps each license with its issuing state, its expiry date and the last four digits of its number, and the business is warned before one lapses — on the website and both phone apps. A customer finding a pro on Seayora sees whether a license is on file.
Guides on this rule
- Contractor License Requirements by State: Every Trade — Which states require a state license for electricians, plumbers, HVAC, general and home improvement contractors, with the statute for each.
Compare this rule in every state
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The same question in other states
- Alabama
- Alaska
- Arizona
- Arkansas
- California
- Colorado
- Connecticut
- Delaware
- District of Columbia
- Florida
- Georgia
- Hawaii