FOR COUNTY AUDITOR'S USE ONLY: Taxing district and parcel or registration number. Auditor's application number.How To File Homestead Exemption Tarrant County Have you ever had these questions? How do I file a homestead exemption? In this video we're gonna show you how to fill out your homestead exemption. Tarrant County homeowners may need to renew their homestead exemption in order to keep the reduction it brings to their property tax bill. Call the Tarrant Appraisal District at 817-284-0024. Contact your county Auditor or visit their website. Applying for a homeowners exemption is usually a straightforward process. How to fill out your Homestead Exemption Application Moving to San Antonio?