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. How to Apply for the Homestead Exemption as an Ohio Disabled Veteran. The first step is to fill out the application form (DTE105A). CLICK HERE for downloadable homestead application in PDF format. The homestead may include up to one acre of land. The homestead exemption will automatically renew each January and the automatic exemption renewal notice will be mailed annually on or before February 1.