25 ILCS 130/8A-30
The Architect of the Capitol, upon the approval of the Board of the Office of the Architect of the Capitol, may acquire land in Springfield, Illinois, within the area bounded by Washington, Third, Cook, and Walnut Streets and the land and State buildings and facilities within the area bounded by Madison, Klein, Mason, and Rutledge Streets for the purpose of providing space for the operation and expansion of the legislative complex or other State facilities. The Architect of the Capitol must review and either approve or disapprove all contracts for the repair, rehabilitation, construction, or alteration of all State buildings within the bounded area, except the Supreme Court Building and the Fourth District Appellate Court Building.
25 ILCS 130/8A-30