35 ILCS 516/385
In addition to the notice required to be served not less than 3 months nor more than 5 months prior to the expiration of the period of redemption, the purchaser or his or her assignee shall prepare and deliver to the clerk of the circuit court of the county in which the mobile home is located, the notice provided for in this Section, together with the statutory costs for mailing the notice by certified mail, return receipt requested. The form of notice to be mailed by the clerk shall be identical in form to that provided by Section 370 for service upon owners residing in the mobile home sold, except that it shall bear the signature of the clerk and shall designate the parties to whom it is to be mailed. The clerk may furnish the form. The clerk shall promptly mail the notices delivered to him or her by certified mail, return receipt requested. The certificate of the clerk that he or she has mailed the notices, together with the return receipts, shall be filed in and made a part of the court record. The notices shall be mailed to the owners of the mobile home at their last known addresses, and to those persons who are entitled to service of notice as occupants.
35 ILCS 516/385