Adding a garden room to your house is often considered a permitted development, even within designated zones such as conservation areas and AONB.
Planning Portal is a good source of information and will give you up to date guidance regarding planning. Should your particular circumstances require a stand-alone application to be made, Marston & Langinger does offer a planning service; we can submit a householder’s application on your behalf.
Listed consent will also be needed if the garden room is to be attached to a listed dwelling. However, it’s not necessarily required if the structure is to be a freestanding garden room within the grounds of a listed dwelling.
When it comes to planning, Marston & Langinger have a wealth of experience. Our team of designers work with planning authorities across the UK and can work with you or your own architect to facilitate this process.