An Illinois land contract documents the binding terms of the purchase and sale of vacant land between two parties. Address. City. State. Zip. County. Permanent Index Number(s) of Real Estate: ______-______-______-______.The Real Estate is vacant and unimproved. On or prior to the applicable Closing Date, the Developer shall close all Lender Financing, and be in a position to immediately commence construction of the. An Illinois purchase agreement is a standard contract for selling real estate from one party to another. These forms are also available in the DotLoop and DocuSign form libraries. Below are forms in PDF format regarding land trusts that do not necessarily require the assistance of an attorney. These forms are now interactive. Seller shall also furnish Purchaser with: (i) an Affidavit of Title in customary form; (ii) a Bill of. Vacant Land Purchase and Sale Contract.