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.
When Mableton voted to incorporate in 2023, it became Cobb County's largest city almost overnight: about 77,678 people across the county's southern end, from the Chattahoochee River bottoms up through the Floyd Road and Veterans Memorial corridors, with the Silver Comet Trail threading between its subdivisions. Housing here has long been south Cobb's value play. The median Mableton home is worth about $313,100, roughly 23 percent below the countywide median of $407,200, and across Cobb County, home values run from about $299,081 at the 25th percentile to $586,625 at the 75th, which puts the typical Mableton house near the bottom of that spread. Cobb's effective property tax rate is comparatively modest at about 1.21 percent, and the median Mableton household, earning $77,980, spends around 2.6 percent of income on property tax. The catch is momentum. South Cobb values have been climbing as close-in prices push buyers west, and reassessment in a rising submarket is exactly where inflated valuations slip through, since trend adjustments can outrun what individual streets actually support. A brand-new city government studying its own tax digest adds one more reason to look closely at this year's number. None of that obligates you to accept the valuation as printed: if recent sales around you say the county has overshot, Georgia law gives you 45 days from the date printed on your assessment notice to appeal, and the window does not extend.
Mableton Appeal Quick Facts
The median home in Mableton is valued at $313,100, and the typical homeowner pays about $1,995 per year in property tax (Census ACS 2024), based on Cobb County's 3.015% combined millage applied to 40% of fair market value after exemptions. 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
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.
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.
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.
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.
Based on 2024 American Community Survey estimates and Cobb County millage rates.