If you have any questions on filing for property tax exemptions, please contact our office at 813-272-6100. The statutory filing deadline is March 1.If it falls on a weekend or legal holiday, then it would extend to the next business day. Contact your local property appraiser if you have questions about your exemption. File the signed application for exemption with the county property appraiser. Visit the Hillsborough County Property Appraiser's website or office. Homestead Exemption Application application For Ad Valorem Tax Exemption (DR-501). It's QUICK, EASY and FREE! You can file for the exemption with the county where your property is located either in person, online or via mail. March 1 is the statutory deadline to file a Homestead Exemption application with our office.