Is my Mableton property tax too high?

The median annual property tax bill in Mableton is $1,995. Using Cobb County's millage rate of 3.015%, the computed tax on the median home ($313,100) is approximately $3,775. If your assessed value is higher than what your home would actually sell for, you are overpaying.

Who do I contact to appeal my Mableton 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.

How much of my income goes to property taxes in Mableton?

At the median, Mableton homeowners pay 2.56% of their household income ($77,980/year) in property taxes. That is a significant burden -- a successful appeal directly increases your take-home.

Are Mableton homes undervalued compared to Cobb County?

Mableton'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 do Mableton property taxes compare to Smyrna?

Smyrna leads Cobb County with a median home value of $449,500, compared to Mableton's $313,100. But a lower county ranking does not mean your individual home is correctly assessed -- overassessments happen at every price point.

How is my Mableton property tax bill calculated?

Georgia taxes property at 40% of fair market value. For Mableton's median home ($313,100), the assessed value is $125,240. Multiply by Cobb County's millage rate of 3.015% to get your annual bill. In growing cities like Mableton, reassessments often outpace actual market conditions -- compare your assessed value per square foot to recent closed sales within 1 mile of your home.

What evidence wins a property tax appeal in Mableton?

The strongest evidence is 3-5 comparable sales -- homes similar to yours in size, age, and condition that sold recently for less than your assessed value. In Mableton, there are typically enough recent sales to build a strong case. Focus on per-square-foot price comparisons and adjust for differences in lot size, condition, and amenities.

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.

Mableton, GA: Is Your Property Tax Assessment Too High? (2026)

By AppealAlly Team · Published April 1, 2026

The median Mableton homeowner pays $1,995/year in property taxes. That is 2.56% of median household income. See how Mableton compares and check your savings potential.

Key Takeaways

Appeal deadline: 45 days from your assessment notice date - strictly enforced.Median home value: $313,100 in Mableton.Median annual tax bill: $1,995.Tax burden: 2.56% of median household income in Mableton.Potential savings: ~$377/year from a 10% reduction, or $1,131 over 3 years with the 299c freeze.Filed with: Cobb County Board of Assessors (not the city).No risk: Georgia law guarantees your assessment cannot increase from filing an appeal.

Mableton is one of Cobb County's largest communities with nearly 78,000 residents, where home values average around $313,000 -- about 23% below Cobb's overall median. If your assessment reflects Cobb's pricier east-side market rather than Mableton's own, you're likely overpaying.

Mableton Appeal Quick Facts

Appeal Deadline: 45 days from the date of the assessment notice
Appeal Form: PT-311A
Filed With: Cobb County Board of Assessors
Assessor Phone: 770-528-3100
Median Home Value: $313,100 (-23% below Cobb County median)
Estimated Annual Tax Bill: $1,995
Tax Burden: 2.56% of median household income

Is your Mableton property tax assessment too high?

The median home in Mableton is valued at $313,100, producing an estimated annual tax bill of $3,775 at Cobb County's 3.015% combined rate. That means the typical Mableton homeowner spends 2.56% of household income on property taxes alone. If Cobb County has overestimated your home's fair market value, you are paying more than you should. Georgia law guarantees that filing an appeal cannot increase your assessment, so there is no risk in checking. At $313,100, Mableton home values are 23% below the Cobb County median, 83% above Georgia's statewide median of $170,200, 1% below the national median of $318,000.

Check If Your Mableton Home Is Overassessed

How does Mableton compare to other Cobb County cities?

Smyrna leads Cobb County in home values, but your individual assessment could still be too high regardless of where Mableton falls in the county ranking.

What evidence matters for Mableton appeals?

With a population of 77,678, Mableton has plenty of recent sales to draw from. The strongest evidence is 3-5 comparable sales: homes similar to yours in size, age, and condition that sold recently for less than your assessed value. Focus on per-square-foot price comparisons and adjust for differences in lot size, condition, and amenities. For the full evidence strategy, exemption details, and step-by-step filing instructions, see our Cobb County Property Tax Guide.

How much can you save in Mableton?

Based on a combined tax rate of 3.015%. Your actual rate may vary by tax district.

A 10% reduction on the median Mableton home ($313,100 down by $31,310) would save approximately $378 per year, or $1,134 over three years with the 299c value freeze.

At 2.56% of household income, even a modest reduction in your assessed value makes a real difference in your annual budget.

File your appeal through Cobb County

Property tax appeals in Mableton are filed with the Cobb County Board of Assessors. You have 45 days from the date of your assessment notice to submit a PT-311A form.

Cobb County Board of Assessors: 736 Whitlock Avenue, Suite 200, Marietta, GA 30064 | 770-528-3100 For the full appeal process and deadline details, see our Cobb County Property Tax Guide.

Other Cities in Cobb County

Explore Cobb County

Based on 2024 American Community Survey estimates and Cobb County millage rates.

Frequently Asked Questions

Is my Mableton property tax too high?: The median annual property tax bill in Mableton is $1,995. Using Cobb County's millage rate of 3.015%, the computed tax on the median home ($313,100) is approximately $3,775. If your assessed value is higher than what your home would actually sell for, you are overpaying.
Who do I contact to appeal my Mableton 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.
How much of my income goes to property taxes in Mableton?: At the median, Mableton homeowners pay 2.56% of their household income ($77,980/year) in property taxes. That is a significant burden -- a successful appeal directly increases your take-home.
Are Mableton homes undervalued compared to Cobb County?: Mableton'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 do Mableton property taxes compare to Smyrna?: Smyrna leads Cobb County with a median home value of $449,500, compared to Mableton's $313,100. But a lower county ranking does not mean your individual home is correctly assessed -- overassessments happen at every price point.
How is my Mableton property tax bill calculated?: Georgia taxes property at 40% of fair market value. For Mableton's median home ($313,100), the assessed value is $125,240. Multiply by Cobb County's millage rate of 3.015% to get your annual bill. In growing cities like Mableton, reassessments often outpace actual market conditions -- compare your assessed value per square foot to recent closed sales within 1 mile of your home.
What evidence wins a property tax appeal in Mableton?: The strongest evidence is 3-5 comparable sales -- homes similar to yours in size, age, and condition that sold recently for less than your assessed value. In Mableton, there are typically enough recent sales to build a strong case. Focus on per-square-foot price comparisons and adjust for differences in lot size, condition, and amenities.
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.