Most homeowners who want to appeal property tax assessment Georgia counties mail them every spring never actually do it. The envelope arrives, the number is higher than last year, the homeowner says something unrepeatable, and then the envelope goes in a drawer. Forty-five days later the right to appeal is gone for the year.
Here is what almost everyone gets wrong. They think an appeal is a fight, and they assume they will lose. It is not a fight, and the odds are better than you think. Your county did not personally evaluate your home. It ran a mass appraisal across tens of thousands of parcels, and mass appraisal cannot see your cracked driveway, your original 2004 HVAC, or the fact that the house two streets over that set your comp had a finished basement and yours does not. You are not accusing anyone of anything. You are correcting a spreadsheet.
Nicole France works with homeowners across Cobb, Cherokee, Paulding, and Bartow counties, four jurisdictions with four different mailing calendars and one identical state law. This post covers the deadline, the form, the evidence, and the three-year freeze most homeowners have never heard of.
Georgia Taxes 40% of Your Home, Not 100%
Start here, because half the panic comes from misreading the notice.
Under Georgia law, properties are assessed at 40% of fair market value, and that assessed value is what your millage rate gets applied to. If the county says your home is worth $450,000, your assessed value is $180,000. Your tax bill comes from $180,000, not $450,000.
Also understand what the notice is not. The Notice of Assessment is not a tax bill. In Cobb, the Tax Commissioner mails the actual bill around August 15, due around October 15. The notice is the county’s opinion of value, and an opinion is a thing you are allowed to disagree with.
You Have 45 Days, and Georgia Does Not Do Extensions
The window is 45 days from the date the notice was mailed, not the date you opened it. That is set by O.C.G.A. § 48-5-311(e), and it is strict.
Weekends do not extend it. Holidays do not extend it. Being on vacation does not extend it. Day 46 is a denial, and there is no appeal of the denial. The mailing date is printed on the notice itself, in the upper right corner. Find it, count 45, and put it on your calendar the day the envelope lands.
File early. The last week of any appeal window is chaos at every assessor’s office in the state. You can submit additional evidence after filing. You cannot submit the appeal after the deadline.
Read the Notice Before You Get Angry
Before you argue about value, check whether the county even has your house right.
Pull your property record online and compare it line by line. Square footage. Bedroom count. Bathroom count. Lot size. Finished basement versus unfinished. Garage bays. Year built. Errors in these fields are common, and an error is the cleanest appeal there is, because you are not arguing judgment, you are pointing at a fact.
A home carried on the tax roll with 800 square feet it does not have is being taxed on 800 square feet it does not have. That is not a debate. That is a correction.
How to Appeal Property Tax Assessment Georgia Counties Mail You
The mechanics are simpler than the reputation.
Georgia provides a uniform form, the PT-311A Appeal of Assessment Form, accepted in every county. You are not required to use it. A signed letter works, as long as it states that you are appealing, names your chosen appeal route, gives your property address and parcel ID, and states your opinion of value.
Send it to your County Board of Tax Assessors. Do not send it to the Department of Revenue. Do not send it to the Tax Commissioner, who collects taxes and has nothing to do with your appeal. Many counties now accept appeals online. Cobb accepts them electronically through the assessor’s appeals page.
One warning. Many counties publish their own modified version of the PT-311A. Download the form from the county that assessed your property, not from a generic search result, and you avoid a bounce-back you cannot afford.
Pick Your Appeal Route Carefully
The form makes you choose a path, and you only get to choose once.
For residential homeowners, the Board of Equalization is almost always the right answer. It is a panel of local citizens, it costs nothing to use, it hears any grounds including value and uniformity, and it preserves your right to appeal onward to Superior Court.
Arbitration exists, but valuation is the only ground you can take there, and it carries costs. The hearing officer route is limited to nonhomestead real property and certain high-value accounts, so it does not apply to your primary residence. Read the options, then check the BOE box.
Note one thing that surprises people: your tax bill is still due while the appeal is pending. Winning gets you a refund or an adjustment. It does not get you a pause.
The Evidence That Actually Wins
Feelings lose. Comparable sales win.
Pull recent sales of genuinely similar homes in your immediate area, closed as near to January 1 of the tax year as possible. Similar means similar: same square footage range, same age range, same basement situation, same lot type. Three or four tight comps beat twelve loose ones.
Then document condition. Photograph the roof that needs replacing, the deck that is failing, the kitchen that is original. Get contractor estimates for major repairs and bring them. A county appraiser who has never stood in your driveway is valuing a house that exists on paper. Your job is to show them the one that exists in real life.
A certified appraisal carries real weight if the numbers justify the cost. On a large gap, it often does.
The Three-Year Freeze Nobody Talks About
This is the part that changes the math, and most Georgia homeowners have never heard of it.
Under O.C.G.A. § 48-5-299(c), when you win a value reduction, that new value generally becomes locked for the appeal year plus the following two tax years. The county cannot raise your assessed value during that window even if the market climbs 15%. One successful appeal can be worth three years of savings, not one.
Two important qualifiers. House Bill 92 changed the rules effective for the 2025 tax year and forward: filing an appeal no longer freezes anything by itself. You have to actually win a reduction to earn the freeze. Speculative appeals no longer carry a consolation prize. And substantial additions or improvements to the property can reset the value during the freeze period.
Do not confuse the 299(c) freeze with the newer HB 581 floating homestead cap, which limits annual growth in a homesteaded property’s taxable value to inflation. They are separate mechanisms, and some counties, cities, and school districts opted out of the HB 581 cap. Confirm what applies to your specific address rather than assuming what applies to your neighbor’s.
Four Counties, Four Calendars
Same state law, different mailboxes. This is where homeowners with property in more than one county get burned.
Cobb mailed 2026 assessment notices on June 5, which puts the appeal deadline around July 20. The Cobb Board of Tax Assessors sits at 736 Whitlock Avenue in Marietta, reachable at 770-528-3100, and homestead exemption applications for 2026 share that same July 20 date.
Cherokee has run mid-June mailings in recent years and requires a written appeal or the county’s form, submitted by mail or in person rather than email. Paulding and Bartow run their own schedules, generally in the late spring to early summer window that covers most of Georgia.
Do not calendar off your neighbor’s deadline if your neighbor lives one county over. An Acworth 30101 mailing address can sit in Cobb or in Paulding, and the appeal deadline follows the county on the tax record, not the address on the mailbox.
What Homeowners Need to Know
An appeal is not a lawsuit. It is a form, a deadline, and a folder of comps. The entire process costs a stamp and an afternoon, and the downside is that nothing changes.
The homeowners who benefit most are not the ones with the biggest grievance. They are the ones with the best documentation and the earliest filing date. Assessors respond to evidence, because evidence is what they are required to respond to.
Consider the appeal in the context of what you actually plan to do. If you are selling within two years, a lower assessed value helps carrying costs but a buyer’s appraisal, not the tax roll, sets your sale price. If you are staying ten years, the 299(c) freeze compounds quietly in your favor. Different plans, different math, same 45 days.
The county sends the notice once a year. You get one window. Use it or wait twelve months.
Nicole France works with homeowners across Cobb, Cherokee, Paulding, and Bartow counties and can help you pull the comparable sales your appeal actually needs.
Frequently Asked Questions
Will appealing make the county reassess my house and raise the value?
Filing an appeal does authorize the county appraisal staff to perform an onsite inspection, and that notice appears on the form itself. In practice, homeowners with genuine evidence of overvaluation rarely see values increase as a result. If your documentation is thin and your home has unpermitted finished space the county does not know about, think carefully before inviting a look.
Do I need to hire someone to appeal?
No. Georgia designed the process for property owners to use directly, and the BOE route costs nothing to file. Professional services exist and typically charge a percentage of savings. Whether that trade makes sense depends on the size of your gap and how much of an afternoon you want back.
What if I bought my house recently for less than the assessed value?
That is among the strongest evidence available. An arm’s-length purchase price near the January 1 valuation date is a market transaction, not an estimate. Bring your closing statement. Recent buyers who are overassessed often have the cleanest cases of anyone.
Need Comparable Sales for Your Appeal?
Pulling accurate, defensible comps is the part most homeowners struggle with, and it is the part that decides the outcome. If you are appealing in Cobb, Cherokee, Paulding, or Bartow and need real sales data for your neighborhood, reach out.
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This post is general information, not legal or tax advice. Nicole France is a REALTOR®, not an attorney or a CPA. Deadlines, forms, and exemption rules change and vary by county. Confirm current requirements with your County Board of Tax Assessors, and consult a tax professional or attorney regarding your specific situation.