Please read before you complete the application. What is the Homestead Exemption?In order to receive this tax credit you must complete an application with the County County Auditor certifying the property is your primary residence. This Video Shows you How to Complete an Application for Homestead Exemption. To formally declare a homestead exemption in Los Angeles, you can obtain the necessary forms from your county recorder's office or website. A new owner will automatically receive an exemption claim form in the mail and there is no cost to file. A homestead exemption application form ("DTE 105A") is available from the Ohio Department of Taxation. Your county may have its own application. Complete a homestead declaration form. Sign your declaration in front of a notary.