New Construction Reporting Form

Under the Illinois Property Tax Code, the owner of property on January 1 is liable for any increased taxes that result from the construction of new buildings, structures or other improvements on the property from the date when an occupancy permit was issued, or, from the date the new or added improvement was inhabitable and fit for occupancy, through December 31 of that year. (35 ILCS 200/9-180)

Instructions: The owner of the improved property is required to submit this form to the Assessor, within 30 days of the issuance of an occupancy permit or within 30 days of completion of improvements, and request that the property be reassessed. The Form may be submitted in person or by mail or electronic submission to the Cook County Assessor’s Office, 118 N. Clark St., Room 300, Chicago IL 60602.