So what is permitted development for the purpose of building a new conservatory or porch? Basically, there are a few basic rules to consider when determining whether you need Planning and/or Building Regulations for your new Conservatory venture. Also, do not confuse Planning with Building Regulations. Planning is all about the use of land and buildings in our towns and villages and how we use these and their appearance, whilst building regulations deals with the structure of buildings, setting standards and designs with health and safety in mind. We will not go into every single detail here, but just provide a general guide for those considering a new conservatory.read more