Cobb County, Georgia · Marietta
Cobb County property tax appeal guide
Northwest metro Atlanta. The 45-day appeal window runs from the date printed on your Annual Notice of Assessment. You appeal through the Cobb County Board of Tax Assessors; Georgia uses Form PT-311A (Property Tax Appeal) filed with the County Board of Equalization (BOE).
Cobb County appeal deadline
Within 45 days of the date on your Annual Notice of Assessment.
Georgia counties mail Annual Notices of Assessment on different dates (typically late spring); your 45-day window runs from the notice date printed on your notice, not a single statewide date. Contact your county Board of Assessors for your exact deadline.
How to appeal in Cobb County
1. Annual Notice of Assessment arrives
Your county Board of Assessors mails an Annual Notice of Assessment, usually in late spring. It lists your new fair market value and the date your 45-day appeal window starts. Georgia law also generally freezes the assessment during an appeal.
2. File Form PT-311A within 45 days
File the Property Tax Appeal (Form PT-311A) with the county Board of Assessors within 45 days of the notice date. State your grounds — most homeowners appeal on Value (over fair market value) or Uniformity (assessed higher than comparable homes).
3. Board of Assessors reviews
The Board of Assessors first reviews your appeal and may adjust your value. If they make no change or you disagree, your appeal automatically advances to the route you selected — usually the Board of Equalization.
4. Board of Equalization hearing
A three-member Board of Equalization hears your case. Bring 3-5 recent comparable sales of similar homes adjusted for size, age, and condition. There is no fee for the BOE route.
5. Further appeal (optional)
If you disagree with the BOE, you generally have 30 days to appeal to the county Superior Court. Contact your county Board of Assessors for the exact procedure.
Cobb County property tax FAQ
What is the property tax appeal deadline in Cobb County, Georgia?
Within 45 days of the date on your Annual Notice of Assessment. Georgia counties mail Annual Notices of Assessment on different dates (typically late spring); your 45-day window runs from the notice date printed on your notice, not a single statewide date. Contact your county Board of Assessors for your exact deadline.
What form do I use to appeal in Cobb County?
Georgia uses Form PT-311A (Property Tax Appeal), filed with the County Board of Equalization (BOE). There is no filing fee to appeal.
What is the deadline to appeal property taxes in Georgia?
45 days from the date on your Annual Notice of Assessment. Because counties mail notices on different dates, there is no single statewide deadline — use the date printed on your notice.
Other Georgia counties
Is your Cobb County home over-assessed?
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