You cannot already claim a homestead exemption for another property in Georgia or in any other state. Gather What You'll Need.Proof of age and previous year's income required. The residential homestead exemption application is located on our website tadd. Org under forms then homestead exemption. To receive any homestead exemption, you must apply in person at the Gilmer County Tax Assessor's Office or use the online application on this site. A homestead exemption protects at least part of the value of the homestead from creditors. The deadline for filing an application for a homestead exemption in Houston County is April 1. There is no income limit for this exemption. Once you have chosen the correct account and open that page you will see "Apply for Homestead Exemption" at the top of the page.