For information on values, to file for an exemption, or to report changes in ownership or address, please call the Appraisal District at 210-224-2432. The Residential Homestead Exemption Form along with other forms used at the Bexar Appraisal District can be found on their website.You must apply with your county appraisal district to get a homestead exemption. Applying is free and only needs to be filed once. The application for the exemption under Tax Code Section 11.132 is Form 50-114, Residence Homestead Exemption Application (PDF). Bexar Appraisal District has an online portal where you can apply online.