Wis. Admin. Code Department of Safety and Professional Services SPS 131.14
If an application for restoring a registration occurs 5 years or more after expiration of the applicant's most recent registration, the applicant's registration may be reinstated by filing with the department an application and the fees specified in s. 440.08(3) (a), Stats. The department may also require demonstration of competence by various methods including, but not limited to, written or oral examination, documentation of home inspection in other jurisdictions, or documentation of current education or experience in the field. Any examination or education required under this section may not be more extensive than the educational or examination requirements for initial registration with the department.
Wis. Admin. Code Department of Safety and Professional Services SPS 131.14