To apply for a Homestead Exemption online, you need to provide electronic copies of the documents listed below. This exemption applies to all homeowners.Fairfax County provides real estate tax relief and car tax relief to citizens who are either 65 or older, or permanently and totally disabled. Homestead Exemption signers may qualify for a Special Assessment Level or Freeze if certain criteria and income requirements are met. Does your state have a property tax cap? Here's what you need to know about increasing tax bills in all 50 states.