5 Enter the property index number (PIN) of the property for which you are requesting the senior citizens homestead exemption. Seniors receiving the Senior Exemption automatically qualify for the Homeowner Exemption and do not have to apply for it separately.All applications must be submitted online through the Smartfile E-Filing Portal. There is no annual renewal for this exemption. Physician's Statement for Disabled Person's Homestead Exemption. Download Form (PTAX-343-A) (PDF). He or she must occupy the property as their principal residence during the taxable year. You can apply online for any of these exemptions through the Cook County Assessor's Office.