Bought a primary residence within the past year in Texas? It's time to file for your Texas Homestead Exemption.I'll show you how to complete a homestead tax exemption form in Texas particularly in the Harris County. Example of Authorized Heir Texas Homestead Exemption form 50114. Check your Reduction - FREE! This video is perfect for you today i will discuss how to file for homestead particularly in harris county and montgomery county districts. This video will cover how to fill out the homestead exemption form. Harris County - Print out the Application for Residential Homestead Exemption in Harris County, fill it out, attach the required documentation, and mail it to:. Enter the following information: •Name of the owner completing this application. •This owner's current mailing address and phone number.