If your intended use is for a personal building eg: A housing, annex, or for accommodation ; you will go through the usual planning application. This should be simple process.
Costs- How much will this cost to do? The current cost of planning permission is currently £462 for a full application for a new single dwelling in England. This fee is different in Northern Ireland, Wales and Scotland. We strongly advise seeking planning advice, each planning office will outline what will need to be done