You must file with the county or city where your home is located. Each county has different applications and required documents.Homestead Applications are Filed with Your County Tax Officials - Application for homestead exemption must be filed with the. You may file this application online at onestop.md. Douglas County has additional exemptions. Maryland requires all homeowners to submit a onetime application to establish eligibility for the Homestead Tax Credit. If you own and live in a house in Fulton County, you may qualify for homestead exemption. You should also apply for the regular homestead exemption. Other homestead exemptions may exist for Veterans over the age of 65 and surviving spouses. See all exemption requirements →.