We often hear from people that attempted an appeal on there own and unfortunately were unsuccessful. If you were denied, you have a very short time to appeal to the state board of appeals (Illinois is known as PTAB) and each state has its own title for these boards. Whatever your state calls it, every resident that appeals and is denied an assessment change can utilize this service. If you provide quality, factual evidence you will likely be pleasantly surprised with the results from your state appeals board. We need to tell you that it will not happen overnight, most appeals that make it to the state board may take over two years to work its way through the process. The information required by the state is similar to a detailed report submitted to the local board of review. You will find appeal forms at most state Dept of revenue sites.