225 ILCS 305/18

(a) The Department may, upon application in writing on forms or electronically accompanied by the required fee, issue a license as an architect to an applicant licensed under the laws of another state, the District of Columbia, a territory of the United States, or a foreign country if the requirements for licensure in that other jurisdiction were, on the date of original licensure, substantially equivalent to the requirements then in force in this State. (b) If the accuracy of any submitted documentation or relevance or sufficiency of the coursework or experience is questioned by the Department or the Board because of a lack of information, discrepancies or conflicts in information given, or a need for clarification, the applicant seeking licensure may be required to provide additional information. (c) Applicants have 3 years from the date of application to complete the application process. If the process has not been completed within the 3 years, the application shall be denied, the fee shall be forfeited, and the applicant must reapply and meet the requirements in effect at the time of reapplication.