65 ILCS 5/11-74.2-9
In exercising the power to acquire real estate as provided in this Division, the corporate authorities may proceed by gift, purchase or condemnation to acquire the fee simple title to all real property lying within a redevelopment area, including easements and reversionary interests in the streets, alleys and other public places lying within such area; if the property is to be obtained by condemnation, such power of condemnation may be exercised only when at least 85% of the land located within the boundaries of each plan has been acquired previously by the corporate authorities or private organization pursuant to the implementation of the plan through good faith negotiations and such negotiations are unsuccessful in acquiring the remaining land. If any such real property is subject to an easement the corporate authorities in their discretion, may acquire the fee simple title to such real property subject to such easement if they determine that such easement will not interfere with carrying out the redevelopment plan. If any such real property is already devoted to a public use it may nevertheless be acquired, provided that no property belonging to the United States of America, the State of Illinois or any municipality may be acquired without the consent of such governmental unit and that no property devoted to a public use belonging to a corporation subject to the jurisdiction of the Illinois Commerce Commission may be acquired without the approval of the Illinois Commerce Commission. In carrying out the provisions of this Division, the corporate authorities are vested with the power to exercise the right of eminent domain. Condemnation proceedings instituted by the corporate authorities shall be in the manner provided for the exercise of the right of eminent domain under the Eminent Domain Act . No power of condemnation shall be used to acquire a site for a commercial project as defined in paragraph (c) of Section 11-74.2-2.
Nothing in this Section shall be construed to exclude property in a final redevelopment plan from taxation.
65 ILCS 5/11-74.2-9