35 ILCS 200/22-15
2021 Illinois Compiled Statutes|Chapter 35 - REVENUE|35 ILCS 200/ - Property Tax Code.|Title 7 - Tax Collection

Sec. 22-15. Service of notice. The purchaser or his or her assignee shall  give the notice required by Section 22-10 by causing it to be published in a  newspaper as set forth in Section 22-20. In addition, the notice shall be  served by a sheriff (or if he or she is disqualified, by a coroner) of the  county in which the property, or any part thereof, is located or, except in Cook County, by a person who is licensed or registered as a private detective under the Private Detective, Private Alarm,  Private Security, Fingerprint Vendor, and Locksmith Act of 2004 upon owners who  reside on any part of the property sold by  leaving a copy of the notice with  those owners personally.In counties of 3,000,000 or more inhabitants where a taxing district is a  petitioner for tax deed pursuant to Section 21-90, in lieu of service by the  sheriff or coroner the notice may be served by a special process server  appointed by the circuit court as provided in this Section.  The taxing  district may move prior to filing one or more petitions for tax deed for  appointment of such a special process server.  The court, upon being satisfied  that the person named in the motion is at least 18 years of age and is capable  of serving notice as required under this Code, shall enter an order appointing  such person as a special process server for a period of one year.  The  appointment may be renewed for successive periods of one year each by motion  and order, and a copy of the original and any subsequent order shall be filed  in each tax deed case in which a notice is served by the appointed person.  Delivery of the notice to and service of the notice by the special process  server shall have the same force and effect as its delivery to and service by  the sheriff or coroner.The same form of notice shall also be served, in the manner set forth under Sections 2-203,  2-204, 2-205, 2-205.1, and 2-211 of the Code of Civil  Procedure, upon all other owners and  parties interested in the property, if upon diligent inquiry they can be found  in the county, and upon the occupants of the property.If the property sold has more than 4 dwellings or other rental units,  and  has a managing agent or party who collects rents, that person  shall be deemed the occupant and shall be served with notice instead of  the occupants of the individual units.  If the property has no  dwellings or rental units, but economic or recreational activities are  carried on therein, the person directing such activities shall be deemed  the occupant.  Holders of rights of entry and possibilities of reverter  shall not be deemed parties interested in the property.When a party interested in the property is a trustee, notice served upon the  trustee shall be deemed to have been served upon any beneficiary or note  holder thereunder unless the holder of the note is disclosed of record.When a judgment is a lien upon the property sold, the holder  of the lien shall be served with notice if the name of the judgment debtor as  shown in the transcript, certified copy or  memorandum of judgment  filed of record is identical, as to given name and surname, with the  name of the party interested as it appears of record.If any owner or party interested, upon diligent inquiry and effort,  cannot be found or served with notice in the county as provided in this  Section, and the person in actual occupancy and possession is tenant to, or in  possession under the owners or the parties interested in the property, then  service of notice upon the tenant, occupant or person in possession  shall be deemed service upon the owners or parties interested.If any owner or party interested, upon diligent inquiry and effort  cannot be found or served with notice in the county, then the person making the  service shall cause a copy of the notice to be sent by  registered or certified mail, return  receipt requested, to that party at his or her residence, if ascertainable.The changes to this Section made by Public Act 95-477   apply only to matters in which a petition for tax deed is filed on or after June 1, 2008 (the effective date of Public Act 95-477).  (Source: P.A. 95-195, eff. 1-1-08; 95-477, eff. 6-1-08; 95-876, eff. 8-21-08.)