Certain property tax benefits are available to persons age 65 or older in Florida. Eligibility for property tax exemp ons depends on certain requirements.Act 77 (Senior Citizen Tax Relief). Property owners in Florida may be eligible for exemptions and additional benefits that can reduce their property tax liability. Must have owned and occupied a primary residence in Allegheny County continuously for the past 10 years. When to file: Application for all exemptions must be made between January 1 and March 1 of the tax year. Homestead Exemption.