We value the privacy of your data and advise you to read the Development Management Privacy Notice before applying for planning permission. You can check if you need permission for what you want to do through the Planning Portal. Find out what information you need to supply with the application using the available checklists. You can find out how much planning permission will cost. Using the planning fees document or use the fee calculator. Planning fees Some household work doesn’t need planning permission. This is called Householder Permitted Development.