Appealing a planning decision is the process of challenging a decision made by a planning authority regarding a planning application. This can be done by an applicant who has been refused planning permission, or by a third party who is affected by the decision.
There are a number of reasons why someone might want to appeal a planning decision. For example, they may believe that the decision was made in error, or that the planning authority did not take into account all of the relevant factors. In some cases, an appeal may be the only way to prevent a development from going ahead.