35 ILCS 200/10-515

If the owner of property subject to this Division is a corporation, partnership, limited liability company, trust, or other similar entity, then it shall report to the chief county assessment officer any change in ownership interest or beneficial interest. If, after October 1, 2007, the ownership interests or beneficial interests in such an entity change by more than 50% from those interests as they existed on October 1, 2007, then the property no longer qualifies to receive the preferential assessment treatment of the wooded acreage under this Division, and the property must be assessed as otherwise permitted by law beginning the following assessment year.