Ill. Admin. Code tit. 44, § 650.30
f) Pursuant to the Code, an applicant must also be prequalified or submit evidence of application with the Illinois Department of Human Rights (IDHR) prior to obtaining Authorization to Bid on contracts which are subject to the competitive bidding requirements of the Code. Information and forms concerning the rules of IDHR may be obtained from the following website: http://www.illinois.
gov/dhr/publiccontracts/Pages/default.aspx.
g) Pursuant to Section 13.05 of the Business Corporation Act of 1983 [805 ILCS 5/13.05], out-of-state contractors are required to secure a certificate from the Illinois Secretary of State authorizing them to do business in Illinois. All contractors are required to be authorized to transact business or conduct affairs in Illinois prior to submission of a bid [30 ILCS 500/20-43]. In addition, out-of-state prequalified contractors are required to staff and maintain an office located within the geographic boundaries of the State of Illinois. The in-state office will be the primary office at which all business with the Department will be conducted. The certificate must be obtained prior to the execution of a contract. Application forms can be obtained from the following website: http://www.
cyberdriveillinois.com/departments/business_services/home.html.
(Source: Amended at 40 Ill. Reg. 7170, effective April 25, 2016)