Apply for homestead exemptions? Call the Tarrant Appraisal District at 817-284-0024.File this form and all supporting documentation with the appraisal district office in each county in which the property is located generally between Jan. Where are lowest property taxes in North Texas? ​. homestead exemption texas tarrant county, how to fill out homestead exemption form texas. Tarrant County residents can complete and submit their residential homestead exemption application online. A property owner must apply for an exemption in most circumstances. The typical deadline for filing a county appraisal district homestead exemption application is between January 1 and April 30.