The Property Appraiser mails Homestead Exemption application forms and qualification guidelines to persons who bought homes during the current year. You will need to file the Declaration with the Clerk and Recorder's Office in the county where the homestead is located.Need More Information? Here's the deal: you can apply for Homestead Exemption between January 1st and March 1st. MiamiDade County heavily relies on your driver's license address and utility bills as proof of homestead. The deadline for filing for exemptions is March 1st. Exemption forms are available from the Miami-Dade County Property Appraiser's Office. 9.