As a military homeowner with a singlefamily rental home in Bexar County, you have access to beneficial property tax homestead exemptions. Surviving Child of a.Disabled Veteran exemption (must be under 18, owner of property, and no surviving spouse). To receive the 100 percent disabled veteran exemption, you may file for the exemption up to five years after the delinquency date for the taxes on the property. First, fill out the application specific to your County Appraisal District, then mail all of the documents to the Appraisal District for your County. No income tax is supposed to balance it out but we also have an insanely high sales tax too. Have you filled out the Homestead exemption?