755 ILCS 27/75
Any beneficiary who takes under a transfer on death instrument may file in the office of the recorder in the county or counties where the real property is located a notice of death affidavit to confirm title following the death of the owner. The notice of death affidavit shall contain the name and address, if known, of each beneficiary taking under the transfer on death instrument, the legal description of the property, the street address and parcel identification number of the real property , if known, the date of the transfer on death instrument and its recording document number, the name of the deceased owner, the date and place of death, and the name and address to which all future tax bills should be mailed. The affidavit shall be acknowledged under penalty of perjury before a notary public or person authorized to administer oaths. The filing of the notice of death affidavit is not a condition to the transfer of title.
755 ILCS 27/75