Austell, GA Property Tax: Rates & How to Save (2026)
Austell, GA property taxes: $1,405/year median. See rates, how to appeal in Cobb County, and check your savings.
Key Takeaways
Median home value: $284,900 in Austell.Median annual tax bill: $1,405.Tax rate: Cobb County's combined rate is 3.015%.Appeals filed with: Cobb County Board of Assessors (not the city).Appeal deadline: 45 days from your assessment notice date.
Austell sits in the southwest corner of Cobb County, where its median home value of about $285,000 comes in roughly 30% below the county average. That discount relative to Cobb's pricier areas should be reflected in your assessment -- and if it isn't, you have options.
Property Tax Rates in Austell
Austell property taxes are assessed and collected by Cobb County. Georgia assesses all property at 40% of fair market value.
Here is how the tax math works for the median Austell home:
Fair Market Value (county assessment): $284,900
Assessed Value ($284,900 x 0.40): $113,960
Tax Rate (Cobb County combined rate): 3.015%
Annual Tax Bill ($113,960 x 3.015%): $3,435
The Census Bureau reports a median annual tax bill of $1,405 for Austell, which reflects all levies including county, school, and city taxes.
How Austell Compares
Austell: $284,900
Cobb County: $407,200
Georgia (statewide): $170,200
Homes in Austell are valued 30% below the Cobb County median. Lower values do not mean your assessment is automatically correct - overassessments happen at every price point. The median annual tax bill in Austell ($1,405) is 2% below Georgia's statewide median of $1,439. Home values in Cobb County range from about $299,081 (25th percentile) to $586,625 (75th percentile), so your appeal savings depend heavily on where your home falls in that range.
How to Appeal Your Austell Property Tax
Property tax appeals in Austell are handled by the Cobb County Board of Assessors. You have 45 days from the date of the assessment notice to file using the PT-311A form.
Based on a combined tax rate of 3.015%. Your actual rate may vary by tax district.
A 10% reduction on the median Austell home ($284,900 down by $28,490) would save approximately $344 per year - or $1,032 over three years with the 299c freeze.
The median annual property tax bill in Austell is $1,405, based on Census ACS 2024 data. Using Cobb County's millage rate of 3.015%, the computed tax on the median home ($284,900) is approximately $3,435.
Who do I contact to appeal my Austell property tax?
Appeals are filed with the Cobb County Board of Assessors, not at the city level. File a PT-311A form within 45 days of your assessment notice.
Are Austell homes undervalued compared to Cobb County?
Austell's lower median does not mean the county's assessment of your specific home is correct. Overassessments happen at every price point. Compare your assessed value per square foot to actual recent sales of similar homes nearby.
How is my Austell property tax bill calculated?
Georgia taxes property at 40% of fair market value. For Austell's median home ($284,900), the assessed value is $113,960. Multiply by Cobb County's millage rate of 3.015% to get your annual bill. Many Austell homeowners find that assessed values have climbed faster than actual sale prices. Comparing your value to 3-5 recent sales of similar homes is the quickest way to spot an overassessment.
Is it worth appealing a small overvaluation in Austell?
Yes. Even a $120 per year overcharge (from a $10,000 overvaluation at Cobb County's 3.015% rate) adds up to $360 over three years with the 299c freeze. The appeal is free to file and there is no risk of your assessment increasing.
Can I appeal if I just bought my Austell home?
Yes. If you paid less than the county's assessed fair market value, your purchase price is strong evidence of overassessment. If you paid more, the county may eventually reassess upward -- but they cannot do so just because you appealed. Either way, you should compare your assessed value to what similar nearby homes actually sold for.
Can my property tax go up if I appeal?
No. Georgia law (O.C.G.A. § 48-5-311) protects you: the county cannot raise your assessed value above what they originally set just because you filed an appeal. The Board of Equalization only rules on the disputed value. Worst case, your appeal is denied and you keep your current assessment -- your taxes will not increase as a result of appealing.