You can claim the disabled veteran property tax exemption that a veteran qualified for after the veteran dies. An unremarried surviving spouse can claim it, and so can an unmarried child under 18.
File the Texas Disabled Veteran’s or Survivor’s Exemption Application, Comptroller Form 50-135, with the county appraisal district where the property is located, not with the state.
The veteran’s death certificate and VA rating documentation, your marriage certificate or proof that you are the veteran’s child, and proof that you own the property.