d

the ground area to be covered by any works or structure (other than a fence) for the purposes of accommodating livestock or any plant or machinery arising from engineering operations would exceed 465 square metres, calculated as described in sub-paragraph (5),

da

the ground area to be covered by any building erected or any building as extended or altered by virtue of this class—

i

is situated in a designated area and would exceed 465 square metres, calculated as described in sub-paragraph (5), or

ii

is situated elsewhere and would exceed 1,000 square metres, calculated as described in sub-paragraph (5),