File this form and all supporting documentation with the appraisal district office in each county in which the property is located generally between Jan. 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. Bought a primary residence within the past year in Texas? It's time to file for your Texas Homestead Exemption. How do I apply for a homestead exemption?