File this form and all supporting documentation with the appraisal district office in each county in which the property is located generally between Jan. Utah law requires that you notify the county when you have property on which you have claimed the homeowner's exemption to which you are no longer entitled.Typically, you'll need to fill out a homestead exemption application with your county tax office. Application for Exemption Instructions Details on how to fill out and mail your Property Taxation Exemption Form , PDF: Application for Exemption Property Tax. How do I apply for a homestead exemption? To ensure you qualify, be sure to click the link next to the summary to see your state's complete tax exemption requirements. If you bought a home last year don't forget to fill out your homestead exemption to lower your annual property taxes. In most cases, the exemption can be retroactive up to two years.