Home / Georgia / Cobb County / Unincorporated Cobb
So we compared 9,346 recent home sales in Unincorporated Cobb with the values Cobb County gave those homes for 2026. The typical home sold for 2.4 percent above its value, which is pretty close, and 35 percent sold for less. Your 2027 notice should show up around early June 2027, and you'll have 45 days to appeal.
Now that's fewer than the share across Cobb County as a whole, where 38 percent sold below their value. So honestly, for a lot of Unincorporated Cobb homeowners an appeal probably won't get far, because the county's number's already about what homes like theirs sell for.
But with 35 percent selling below their value, the county's number is likely too high on some homes here, and that's where an appeal can really work. Honestly, the only way to know is to look at your own street. Our free check finds genuinely similar homes near yours that sold recently and tells you straight which side you're on. Most people who use it get told not to bother, and that's kind of the point.
Check my Unincorporated Cobb home, free
Basically, every spring Cobb County mails an Annual Notice of Assessment, and in 2026 it went out on about June 5, 2026. You've got 45 days from the date that's printed on it, not from the day it shows up, and filing's free. So the 2027 window should open around early June 2027, and your notice will say the exact last day.
Then you'll file on Georgia's form PT-311A, or a letter that says the same things. It asks you to pick how the appeal's heard, and you can't switch later, so read all the choices before you tick one. Now the question the board's really asking is what your home was worth on January 1 of that year. So the evidence that counts is sales of genuinely similar homes close to that date, and what homes sell for a year later doesn't help much.
A win here's frozen for three years. Under O.C.G.A. 48-5-299(c), a value that's set by an appeal can't be raised for the two years after the one you won, so one win pretty much pays three times. If you settle with the assessors, you'll want it in writing and signed, or the freeze probably won't count. There's more in our guide to the three year freeze.
And there's more on the whole county in our Cobb County page.
Just so you know, the sales comparison's our own, read from Cobb County's public records on 2026-10-07. We took every 2025 and 2026 sale for $50,000 or more that Cobb County's assessors mark as a qualified sale, for homes built before 2025, and compared each price with the home's 2026 fair market value in the county's own records. Sales the county marks with other codes, like family transfers and foreclosures, aren't counted, because they don't really tell you what a home's worth. We only show a town that's got at least 100 sales. The town is the city that taxes the home, so Unincorporated Cobb covers everything outside a city, including much of east Cobb.
And the 2026 mailing date comes from local news coverage of the mailing. The 45 day window and form PT-311A are set by Georgia law, so they're the same in every county, and the three year freeze is O.C.G.A. 48-5-299(c). The tax rate's from the Cobb County Tax Commissioner's published 2026 rates.
If you spot an error, please write to hello@propertytaxbuddy.com and we'll correct it and say what changed.