Firms must be licensed and hold a current Certificate of Authorization to practice professional engineering in the state of Wisconsin (Wis. Stat. 443.08). PE license numbers are not accepted in lieu of the credential.
For general credentialing questions, please email DSPS@wisconsin.gov.
Firms not holding a current Certificate of Authorization should contact:
Department of Safety and Professional Services
P.O. Box 8935
Madison, Wisconsin 53708-8935
Phone: (608) 266-2112