Ill. Admin. Code tit. 44 § 8.8001
CDB contracts and agreements shall be awarded only to responsible A/E, contractors, construction managers and design-build entities comprised of vendors and are subject to the authority of the CPO. Prospective A/Es, contractors, construction managers and individual vendors that constitute design-build entities must affirmatively demonstrate responsibility, including, when necessary, the responsibility of proposed subcontractors and suppliers. In the absence of information clearly indicating that prospective A/Es, and contractors are responsible, CDB shall make a determination of non-responsibility. Only responsible A/Es, contractors, construction managers and individual vendors that constitute design-build entities shall be prequalified, and only those prequalified shall be permitted to bid on CDB projects. A determination of non-responsibility may be made at any time prior to or after award of a contract.
Ill. Admin. Code tit. 44, § 8.8001