Only one senior need apply for the senior exemption, but all members of the household must include their income and social security numbers. What is your social security number and your co- applicant or spouse's social security number?Certain property tax benefits are available to persons age 65 or older in Florida. Eligibility for property tax exemp ons depends on certain requirements. Here's the deal: you can apply for Homestead Exemption between January 1st and March 1st. For homeowners in MiamiDade County, the Homestead Exemption is a gamechanger. Additional Low-Income Senior Exemption: Filing period is January 1 through March 1 of each year.