The Council may acquire compulsorily so much of, or such rights in, the subsoil of or the airspace over the land referred to in paragraph (1)(a) or (b) of article 16 (power to acquire land) as may be required for any purpose for which that land may be acquired under that provision instead of acquiring the whole of the land.

Where the Council acquires any part of or rights in the subsoil or airspace over land under paragraph (1) it is not required to acquire an interest in any other part of the land.

Paragraph (2) does not prevent article 27 (acquisition of part of certain properties) from applying where the Council acquires a cellar, vault, arch or other construction forming part of a house, building or manufactory.