Disabled applicants must complete form DTE 105E,. The homestead exemption allows lowincome senior citizens and permanently and totally disabled Ohioans, to reduce their property tax bills.A homestead exemption application form ("DTE 105A") is available from the Ohio Department of Taxation. This Video Shows you How to Complete an Application for Homestead Exemption. Property tax exemptions are savings that contribute to lowering a homeowner's property tax bill. The most common is the Homeowner Exemption. Cook County has identified the real and potential effects of homestead exemptions as an issue in the administration of its property tax system. The homestead can't exceed one acre in a city or 160 acres in a rural area. County is interesting in part because it has been singled out as a jurisdiction with highly regressive assessment practices (e.g. Now go file for it now!