License Information

Per Wis. Stat. § 145.06, no person may engage in or work at plumbing in the state unless licensed to do so by the Department.

Per Wis. Admin. Code § 305.95, a person who holds a registration as a registered Plumbing Apprentice may install or modify plumbing under the general supervision of a person who is a licensed Master Plumber. A person who installs or modifies plumbing as a registered Plumbing Apprentice may do so if he or she is indentured under Wis. Stat. § 106.

Application for License

Renewal Information

Requirements

• FEE (See Renewal Dates and Fees)
• Indenture Date

Renewal Methods

• Mail Renewal Reminder/Application to:

Department of Safety and Professional Services

Trades Credentialing Unit
PO Box 78780
Milwaukee, WI ​53293-0780

If you have questions regarding your renewal, please email DSPSCredTrades@wisconsin.gov.

When mailing your renewal, please allow up to 21 calendar days [per Wis. Admin. Code SPS 305.04 (1)] from the date your payment is processed to receive an update regarding your renewal.
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Getting Certified to Work with Lead Based Paint​

Training and certification are required for professionals who offer or conduct regulated lead-based paint activities in pre-1978 housing and child-occupied facilities. These activities include:

• Abatement of Lead Hazards
• Lead Testing, Inspection, and Risk Assessment
• Most paint-disturbing renovation work (for example, replacing windows, scraping paint prior to re-painting)
• Post renovation and post-abatement clearance (including dust wipe sampling to measure lead dust left behind)

By getting certified and working safely, you protect your own and others' health, and show professional responsibility. For more information about certification, visit the Wisconsin Department of Health Services​ website.​​