Plumbing Apprentice

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

3133Application for Plumbing Apprentice Registration
3073​Fax Payment Form

Renewal Information


  • 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

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.