Paragraph 18 Building and construction materials – structuresI1

No part of the authorised development is to commence until written details of the building materials to be used for the external facings of all structures, including bridges, retaining walls and culvert sides and headwalls, have been submitted to and approved in writing by the relevant planning authority following consultation with the county planning authority.

The authorised development must be carried out using the materials approved under sub-paragraph (1).