In order to be timely, payment of taxes must be postmarked on or before January 31st. The Residential Homestead Exemption Form along with other forms used at the Bexar Appraisal District can be found on their website.GENERAL INFORMATION: Property owners applying for a residence homestead exemption file this form and supporting documentation with the appraisal district in. Property tax exemptions. To apply for any of the homestead exemptions listed above, please complete and submit the Residence. Homestead Exemption form 50-114. The application for the exemption under Tax Code Section 11.132 is Form 50-114, Residence Homestead Exemption Application (PDF). You must apply with your county appraisal district to get a homestead exemption. Applying is free and only needs to be filed once. The City of San Antonio increased the homestead exemption for its portion of a resident's tax bill from .