The Residential Homestead Exemption Form along with other forms used at the Bexar Appraisal District can be found on their website. In order to be timely, payment of taxes must be postmarked on or before January 31st.GENERAL INFORMATION: Property owners applying for a residence homestead exemption file this form and supporting documentation with the appraisal district in. Property tax exemptions. This video will cover how to fill out the homestead exemption form. The general deadline for filing an exemption application is before May 1. All Exemptions listed below. Form 50-114 Residence. You must apply with your county appraisal district to get a homestead exemption. Applying is free and only needs to be filed once.