File this form and all supporting documentation with the appraisal district office in each county in which the property is located generally between Jan. STATEMENTS. This claim may be used to file for the Homeowners' Exemption for the Assessment Roll and the Supplemental Assessment Roll.How to File a Homestead Exemption. A homeowner must file for the homestead exemption with the correct county recorder's office. This video covers how to fill out Texas Residential Homestead Exemption with a focus on Bexar County. You must apply with your county appraisal district to get a homestead exemption. Applying is free and only needs to be filed once. Assessed value takes into account any exemptions you may have on your property. Property Tax Rates Across Contra Costa County, California. Contra Costa County.