A big value jump, nearby homes selling for less, or missed condition issues are signs your home is over-assessed. Filing is free, and if an appeal reduces your value, you can keep saving for up to three years, subject to the statutory exceptions.
# 5 Signs Your Georgia Property Is Over-Assessed (And What to Do About It)
In Gwinnett County alone, 20,229 property tax appeals were filed in 2025, and 82.2% of the closed appeals won a reduction. Among those winners, the median reduction was $15,600 in fair market value and the mean was $28,859 (Source: Gwinnett County public records request, 2025 tax year).
If you've opened your annual assessment notice and felt that familiar gut punch. that can't be right. you're probably not imagining things. Georgia's property tax collections grew 41% between 2018 and 2022, and assessments from the 2020-2022 housing peak are still flowing into current notices even as the market has cooled. The median Georgia home sits around $360,000 with days on market stretching to 84. yet many counties are still assessing as if bidding wars never ended.
The question isn't whether over-assessed property tax bills exist in Georgia. They do, by the tens of thousands. totaling an estimated $633 million in annual overpayment statewide. The question is whether yours is one of them. Here are five signs that point to yes. and exactly how to check each one right now.
Georgia counties reassess every property annually under O.C.G.A. § 48-5-6, and in fast-growing metro Atlanta suburbs, those reassessments can be aggressive. A double-digit increase doesn't automatically mean an error, but it does mean your county thinks your home's fair market value surged. and that claim deserves scrutiny.
County assessors rely on mass appraisal models that apply broad trends across neighborhoods. When a handful of homes in your ZIP code sell high, the model can pull every nearby property upward. even homes that wouldn't actually fetch those prices. A sharp year-over-year jump is often a sign that the model overshot your property specifically.
Pull up your current assessment notice and last year's notice (or look up your property on your county assessor's website). Compare the Fair Market Value (FMV) line. not the assessed value, which is always 40% of FMV in Georgia. Calculate the percentage change:
(New FMV − Old FMV) ÷ Old FMV × 100 = Your % increase
Then compare that number to your county's average increase, which is usually published in local news coverage of the digest each year.
A homeowner in Gwinnett County sees their ranch-style home jump from $340,000 to $385,000. a 13.2% increase. The county-wide average increase that year was 7.9%. That 5.3-percentage-point gap suggests the model over-applied neighborhood trends to this specific home. At Gwinnett's combined millage rate of approximately 14.71 mills, the $45,000 in excess FMV costs the homeowner about $264 per year in taxes they may not owe.
This is the strongest evidence type in a Georgia property tax appeal: the comparable sales argument. Georgia law defines fair market value as the amount a knowledgeable buyer would pay on the open market as of January 1 of the tax year. If actual buyers are paying less for homes like yours, your county's number is wrong. and you have the receipts to prove it.
Boards of Equalization weigh recent sales of similar properties more heavily than almost any other evidence. Three to five genuine comparable sales within a mile or two of your home, closing within the past 12 months, can make a case nearly airtight. This is the approach that drives the majority of successful appeals.
Go to your county assessor's website and search for recent sales in your subdivision or within a half-mile radius. Filter for homes with similar square footage (within 15-20%), the same number of bedrooms and bathrooms, and similar lot size. Look at what they actually sold for. If multiple comparable sales closed below your assessed FMV, you have a strong case. For a deeper walkthrough, see this guide on how to find the right comps.
A homeowner in Sandy Springs (Fulton County) is assessed at $525,000 FMV. She pulls up three comparable sales in her neighborhood from the past eight months: $480,000, $488,000, and $492,000. The average sale price is $487,000. nearly $40,000 below her assessment. At Fulton County's combined millage rate of roughly 44 mills, successfully appealing down to $487,000 would save an estimated $669 per year. Under Georgia's O.C.G.A. § 48-5-299(c) three-year value freeze, if the reduced value holds, subject to the statutory exceptions, that's an estimated $2,006 over three years at the same millage.
Counties assess properties based on public records, aerial imagery, and the occasional drive-by. They don't walk through your house. If your roof is 25 years old, your HVAC system is on its last legs, or your basement has water damage, the county's records almost certainly don't reflect it. That means they're valuing a version of your home that doesn't exist.
Fair market value accounts for a property's actual condition. A buyer would negotiate down for a home needing a $30,000 roof replacement. and your assessment should reflect that reality too. Deferred maintenance, outdated kitchens and bathrooms, foundation issues, and needed system replacements all lower what a knowledgeable buyer would pay.
Make a list of every significant repair or upgrade your home needs. Get estimates if you can. even rough ones from online cost calculators help. Then compare your assessed FMV to what your home would realistically sell for today, given its actual condition. If there's a meaningful gap, you have an argument the county hasn't heard yet. Photos and contractor estimates make this case even stronger. Learn more about what evidence wins appeals.
A homeowner in DeKalb County has a 1980s split-level assessed at $420,000 FMV. The roof needs full replacement (estimated $35,000), and there's a foundation crack requiring structural repair ($20,000). No rational buyer would pay $420,000 for this home without negotiating those costs down. Adjusted FMV: $365,000. At DeKalb's combined rate of about 20.81 mills, a reduction to $365,000 saves roughly $458 per year.
Your purchase price is one of the most powerful pieces of evidence in a property tax appeal. It's an arm's-length transaction between a willing buyer and a willing seller. which is exactly how Georgia law defines fair market value under O.C.G.A. § 48-5-2. When the county says your home is worth more than what someone actually paid for it on the open market, the county has a credibility problem.
This is especially common for homeowners who purchased in late 2023, 2024, or 2025 as the Georgia market cooled. Assessments reflect the county's opinion of value as of January 1, but those opinions are often based on models trained on the hotter 2021-2022 market. If you bought at a price the market actually supported and the county is still assessing above it, the gap is your appeal. For more on why this happens, see why taxes spike after buying a home.
Find your closing disclosure or settlement statement. it shows exactly what you paid. Compare that number to the FMV on your assessment notice. If the assessed FMV exceeds your purchase price and you bought within the last 12-18 months, you have a strong, straightforward case. Make sure the sale was arm's-length (not between family members or under distress conditions).
A homeowner purchased a home in East Cobb (Cobb County) for $475,000 in mid-2025. The following year's assessment notice shows an FMV of $520,000. $45,000 higher than what she actually paid in a competitive market. At Cobb County's combined millage rate of about 30 mills, that $45,000 excess FMV costs an estimated $540 per year. If a successful appeal removes it and the reduced value holds under the three-year freeze, subject to the statutory exceptions, that's an estimated $1,620 over three years at the same millage.
If comparable properties on your street or in your subdivision successfully appealed and received lower assessments, your home may now be assessed higher than similar homes nearby. This creates a uniformity problem. and Georgia law requires that properties be assessed uniformly within a county. A uniformity argument is a distinct and valid basis for appeal.
After a wave of successful appeals in a neighborhood, the homeowners who didn't appeal can end up as outliers. assessed significantly higher than nearly identical homes next door. Boards of Equalization take uniformity seriously because unequal assessment is a due process issue. You don't even need to prove your FMV is wrong in absolute terms; you just need to show it's unfairly high relative to similar properties that were recently adjusted.
Search your county assessor's website for the assessed values of 3-5 homes similar to yours in your immediate area. If you see that neighbors with comparable homes have noticeably lower FMVs. especially if those values dropped recently. they likely appealed and won. You can also check whether your county publishes appeal results or BOE decisions. For county-level data, see appeal success rates by county.
In Peachtree Corners (Gwinnett County), several homeowners on the same street filed appeals and received an average reduction of $75,000 in FMV. A neighbor with a nearly identical home did not appeal and is now assessed $75,000 higher than the house two doors down. At 14.71 mills, that gap costs $441 per year. not because the market changed, but because one homeowner filed a form and the other didn't.
Once you've identified which signs apply to your property, here's how to estimate your potential savings:
Estimates assume the reduced value holds for three years, subject to the statutory exceptions, and millage stays the same; the mean reduction is from Gwinnett's 2025 appeal records (Source: Gwinnett County public records request, 2025 tax year). Under O.C.G.A. § 48-5-299(c), if an appeal reduces your value, the assessors cannot raise it for the next two years, subject to the statutory exceptions. Learn how the 3-year freeze works.
Yes. overwhelmingly. In Gwinnett County's 2025 cycle, 82.2% of closed appeals resulted in a reduction. Statewide, metro Atlanta homeowners appeal at a rate of 4.4% of parcels, yet a 2025 analysis found that 49% of Gwinnett homes alone may be overvalued. That means the vast majority of homeowners with a legitimate case never file.
Filing an appeal at the Board of Equalization level is free. The PT-311A appeal form is a single page. While your appeal is pending, you're billed at the lower of 85% of the current assessment or 100% of the prior year's assessment. so you get temporary relief immediately. For a step-by-step walkthrough, see the complete 2026 Georgia appeal guide.
Georgia law sets the appeal deadline at 45 days from the date on your assessment notice (O.C.G.A. § 48-5-311), counted from the day the notice is dated, not the day you open it. The date printed on your notice controls. Confirm with your county before you file.
Here's where to file in the four largest metro Atlanta counties:
Pull up your assessment notice. Check the FMV against last year's value, against recent sales in your neighborhood, against your purchase price, and against your neighbors' current assessments. If any of the five signs above apply, you likely have a case worth filing.
The appeal itself is free, and 82.2% of closed Gwinnett appeals won a reduction in 2025. Mark your deadline, gather your evidence, and file.