Residence Homestead Exemption Application (includes Age 65 or Older, Age 55 or Older Surviving Spouse, and Disabled Person Exemption). If you are a single or married homeowner filing together, you may be eligible to apply online.I'm going to show you how to file your homestead exemption in Dallas County Texas. This video is the exact tutorial the exact demo on how to do the homestead exemption how to file it. Homestead exemption holders are being asked to reapply for their exemption to confirm that they still qualify. We are unable to accept online filings. File this form and all supporting documentation with the appraisal district office in each county in which the property is located generally between Jan. First, you will need to submit a completed application form. This form can be obtained from the county appraisal district office or from their website. Millage is the tax rate expressed in decimal form.