65 ILCS 5/11-76-2
An ordinance directing a sale, or a lease of real estate for any term in excess of 20 years, shall specify the location of the real estate, the use thereof, and such conditions with respect to further use of the real estate as the corporate authorities may deem necessary and desirable to the public interest. Before the corporate authorities of a city or village make a sale, by virtue of such an ordinance, notice of the proposal to sell shall be published once each week for 3 successive weeks in a daily or weekly paper published in the city or village, or if there is none, then in some paper published in the county in which the city or village is located. The first publication shall be not less than 30 days before the day provided in the notice for the opening of bids for the real estate. The notice shall contain an accurate description of the property, state the purpose for which it is used and at what meeting the bids will be considered and opened, and shall advertise for bids therefor. All such bids shall be opened only at a regular meeting of the corporate authorities. The corporate authorities may accept the high bid or any other bid determined to be in the best interest of the city or village by a vote of 3/4 of the corporate authorities then holding office, but by a majority vote of those holding office, they may reject any and all bids. The consideration for such a sale may include but need not be limited to the provision of off-street parking facilities by the purchaser, which parking facilities may be made part of the municipal parking system. Such consideration also may include the provision of other public facilities by the purchaser.
Before the corporate authorities of the city or village make a lease of real estate for a term in excess of 20 years, they shall give notice of intent to adopt such an ordinance. The notice must be published at least once in a daily or weekly newspaper published in the city or village, and if there is none, then in some paper published in the county in which the city or village is located. The publication must be not less than 15 nor more than 30 days before the date on which it is proposed to adopt such an ordinance. The notice must contain an accurate description of the property, state the purpose for which it is used and the restrictions upon the proposed use of the property to be leased. The corporate authorities may negotiate the consideration and terms of such lease. Such consideration may include the provision of off-street parking facilities by the lessee, which parking facilities may be made part of the municipal parking system. Such consideration also may include the provision of other public facilities by the lessee on the real estate acquired. The corporate authorities may contract with the lessee for the use of a portion of a structure or improvement to be constructed on the real estate leased.
If such real estate is utilized in part for private use and in part for public use, those portions of the improvements devoted to private use are fully taxable. The land shall be exempt from taxation to the extent that the uses thereon are public and taxable to the extent that the uses are private. The taxable portion of the land is that percentage of the land's total assessed valuation that the private development thereon bears to the total development thereon. Nothing in this Section prevents the corporate authorities from determining to sell or lease such property to the highest responsible bidder. The corporate authorities may provide by ordinance for the procedure to be followed in securing bids for the sale or lease of the subject property. The disposition of real estate acquired pursuant to (a) Section 6 of the "Urban Community Conservation Act", approved July 13, 1953, as now or hereafter amended, (b) Sections 12, 22 and 31 of the "Urban Renewal Consolidation Act of 1961", approved August 15, 1961, as now or hereafter amended, or (c) Division 11 of this Article by a municipality as the Local Public Agency under an urban renewal program as defined therein, is exempt from the requirements of this Section. Additionally, leases to persons or corporations of municipally-owned or operated airport lands, buildings, structures or other facilities for the shelter, servicing, manufacturing and repair of aircraft, aircraft parts or accessories, or for receiving and discharging passengers and, or cargo, are exempt from the requirements of this Section.
65 ILCS 5/11-76-2