To apply for any of the homestead exemptions listed above, please complete and submit the Residence. Homestead Exemption form 50-114.GENERAL INFORMATION: Property owners applying for a residence homestead exemption file this form and supporting documentation with the appraisal district in. Disabled applicants must complete form DTE 105E,. You must apply with your county appraisal district to get a homestead exemption. Applying is free and only needs to be filed once. To apply for an exemption, call the Bexar Appraisal District at 210-224-2432. How do I get a homestead exemption? Like the homestead exemption, only school districts are required to offer this exemption. Assessed value takes into account exemptions, including the Save Our Homes assessment limitation.