Most homeowners are eligible for this exemption if they own and occupy their property as their principal place of residence. Taxpayers whose primary residence is a single-family home, townhouse, condominium, co-op or apartment building (up to six units) are eligible.The applicant must have owned and occupied the property as of January 1 and must have been 65 years of age or older during the tax year in question. The property tax bill must indicate the Homeowner Exemption. The program is only for properties owner-occupied as of January 1, 2007. The BOR accepts exemption applications for approximately 30 days, four times each year. You can apply online for any of these exemptions through the Cook County Assessor's Office. This loan is to help pay your current property tax bills. Own and occupy the property. Join us for a workshop to learn about the Cook County Assessor's Office and homeowner exemptions.