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.
Firms not holding a current Certificate of Authorization should contact:
Safety and Professional Services
Wisconsin Bureau of Business and Design Professions
P.O. Box 8935
Madison, Wisconsin 53708-8935
Phone: (608) 266-5511