For other questions you may have, please contact the Office of the Tax Assessor-Collector at 210-335-2251 for personalized assistance. This video covers how to fill out Texas Residential Homestead Exemption with a focus on Bexar County.Here's where to find the money available to help with past due property tax, mortgage, and utility bills. What is a Homestead Exemption Cap? GENERAL INFORMATION: Property owners applying for a residence homestead exemption file this form and supporting documentation with the appraisal district in. On this page, forms for these credits and exemptions are included within the descriptions.