There are multiple ways to file a Homestead Exemption application Form 50-114, however the online option is the fastest, and details are provided in the transcript below.
Applications for exemptions must be submitted to the Bexar Appraisal District. The Residential Homestead Exemption Form along with other forms used at the Bexar Appraisal District can be found on their website. See the Calendar For Property Owners and the Historical Property Tax Rate Table for more information.
Generally, the filing deadline for a residence homestead exemption is no later than April 30. What if I miss the filing deadline? A late application for a residence homestead exemption, including for a person age 65 or older or disabled, may be filed up to two years after the filing deadline has passed.
REQUIRED DOCUMENTATION Attach a copy of each property owner's driver's license or state-issued personal identification certificate. The address listed on the driver's license or state-issued personal identification certificate must correspond to the property address for which the exemption is requested.