- 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.