You must apply with your county appraisal district to get a homestead exemption. Applying is free and only needs to be filed once.GENERAL INFORMATION: Property owners applying for a residence homestead exemption file this form and supporting documentation with the appraisal district in. This video covers how to fill out Texas Residential Homestead Exemption with a focus on Bexar County. Most counties have the homestead exemption form online. Applying for the homestead exemption is FREE and easy. The typical deadline for filing a county appraisal district homestead exemption application is between January 1 and April 30. Bought a primary residence within the past year in Texas? It's time to file for your Texas Homestead Exemption. An updated Texas issued Driver License or Identification card showing your current physical address is required to qualify for the homestead exemption.