What is the deadline to grieve your property taxes in Marietta in 2026?

Georgia does not have a grievance process; Cobb County calls this an appeal, and the 2026 deadline for a Marietta property is printed on the annual assessment notice the county mails that year. The deadline is measured from the mailing date, so it is not the same fixed date every year. Read the notice the moment it arrives and confirm the date with the Cobb County Board of Tax Assessors if you are unsure. Joel can help you prepare the comparable-sales evidence in time.