Most homeowners are eligible for this exemption if they own and occupy their property as their principal place of residence. Filing online is quick and easy!Link to obtain further information about the various exemptions that are offered, the documents and filing process required for each exemption to be claimed. Complete this form if you are currently receiving CCAP funding and wish to continue or are not currently receiving CCAP funding and wish to apply. There is no application form. You send a cover letter to the IL Department of Revenue, written on your organization's letterhead, requesting the tax exemptions. Some of the most commonly accessed forms are included below. You are an active member of the military. (National Reserve members are NOT exempt.) You currently have a lawsuit filed in Cook County. Cook County Treasurer's Office - Chicago, Illinois.