How do I file a declared homestead? Complete a homestead declaration form.How do I fill this out? To qualify for the homeowners' exemption, the home must have been the principal residence of the owner as of January 1 of that tax year. A homestead exemption protects at least part of the value of the homestead from creditors. When Should You File for Texas Homestead Exemption? File as soon as you own and occupy your home. This Video Shows you How to Complete an Application for Homestead Exemption. GENERAL INFORMATION: Property owners applying for a residence homestead exemption file this form and supporting documentation with the appraisal district in. What If You Forget to File?