To apply for a Homestead Exemption, you must submit the following to the Harris Central Appraisal District (HCAD):. The general deadline for filing an exemption application is before May 1.Return to Harris County Appraisal District,. No information is available for this page. Property tax bills are normally mailed out before October 20 of each year. Taxes are due December 20 of the same year. GENERAL INFORMATION: Property owners applying for a residence homestead exemption file this form and supporting documentation with the appraisal district in. You might be able to claim a homestead exemption based on whether you are 65 or older, have a disability, or are a veteran of the military. This video is perfect for you today i will discuss how to file for homestead particularly in harris county and montgomery county districts. A property owner must apply for an exemption in most circumstances.