First-time Homestead Exemption applicants and persons applying for the Homestead Assessment Difference (Portability) can file online. Property owners who qualify for other exemptions, must complete the corresponding form and submit it to the Property Appraiser's Office.Permanent Florida residency required on January 1. The deadline for filing for exemptions is March 1st. Exemption forms are available from the Miami-Dade County Property Appraiser's Office. 9. You are in the process of filing a petition with the Value Adjustment Board (the "VAB") to request a tax exemption or property classification for 2018. This. If, as a new owner, you want to receive a Homestead Exemption in Miami-Dade or Broward County, you must apply before March 1st of the following tax year. The Homestead Exemption in MiamiDade County is pretty straightforward. All legal Florida residents are eligible for a Homestead Exemption on their homes, condominiums, co-op apartments, and certain mobile home lots if they qualify. For homeowners in MiamiDade County, the Homestead Exemption is a gamechanger.