Does my new building need planning permission? The straightforward answer almost certainly is ”yes”. There are a few exemptions to the planning rules such as permitted development for smaller buildings in some domestic situations, temporary buildings (which means buildings that are up for less than 28 days), buildings which are like-for-like replacements of existing buildings, and some types of agricultural building; however these exemptions do not apply to most new buildings. TP Structures can provide advice on applying for planning permission, as well as a planning application service at a very competitive cost.