Failure to file within the allocated time for the homestead exemption constitutes a waiver of exemption for that tax year. Georgia law does not provide for extension of time for filing for whatever reason. All exemptions, once approved, are automatically renewed each year until eligibility changes.
If you have previously applied for a homestead exemption, you do not need to re-apply. If you filed for a homestead exemption with Chatham County, you must also apply with the City of Port Wentworth.