To create an online services account, you will be required to register. A property owner or the owner's authorized agent must file the necessary application before May 1 of the tax year.How do I get the homestead exemption? The Residential Homestead Exemption Form along with other forms used at the Bexar Appraisal District can be found on their website. Bexar Appraisal District has an online portal where you can apply online. Bexar County Appraisal District representatives will also be present and answer your individual questions and help you complete your exemption form. First, fill out the application specific to your County Appraisal District, then mail all of the documents to the Appraisal District for your County. Yes, a fillable PDF is available online at the Bexar CAD Website. Log in to your account. Sign up with your credentials or register a free account to try the service prior to choosing the subscription.