18.—(1) In Article 11 of the principal Order (meaning of “development”) after paragraph (1) there is inserted—
“(1A) For the purposes of this Order “building operations” includes—
(a)demolition of buildings;
(b)rebuilding;
(c)structural alteration of or addition to buildings; and
(d)other operations normally undertaken by a person carrying on business as a builder.”.
(2) In paragraph (2) of that Article, after sub-paragraph (e) there is inserted—
“(f)the demolition of any description of building specified in a direction given by the Department.”.