For cladding?

If you live in a Conservation Area, you will need to apply for planning permission before cladding the outside of your house with stone, tiles, artificial stone, plastic, timber, render or pebble dash.

Outside of a Conservation Area planning permission will be required if the materials used in any exterior work are not of a similar appearance to those used in the construction of the exterior of the existing dwellinghouse.

You can find out if your property is located in a conservation area here.

Further information is available on the Planning Portal website.