File for homestead exemption online. Currently the online application is only for Homestead Exemption and Portability.This guide is designed to cover the basics and nuances of property taxes in MiamiDade County and provide you with helpful resources. Claiming a Florida homestead exemption involves some very specific requirements that must be completed within a specified time frame. Property owners in Florida may be eligible for exemptions and additional benefits that can reduce their property tax liability. Your Homestead is your home that you own (not rent) and live in as your permanent residence in Florida. You can only have ONE Homestead. A person must occupy and reside in the property in order for it to qualify for homestead protection. Article VII, Section 6(b) of the Florida Constitution ("Fla. Const. The deadline for filing for exemptions is March 1st.