When you're thinking about a property tax assessment appeal in Cobb County or Gwinnett County, you want to make sure it's based on the right information. In other words, you have a higher chance of a more successful appeal if you're comparing your property to others in the county. You might have found comparable properties in other areas, but you can't really use them to make your case. Here's what to think about when it comes to finding the right way to successfully appeal your property taxes.