5.—(1) Paragraph W (procedure for applications for prior approval under Part 3) of Part 3 (changes of use) is amended as follows.
(2) For sub-paragraph (2)(bb) substitute—
“(bb)in relation to development proposed under Class Q of this Part, a statement specifying—
(i)the number of dwellinghouses proposed, and
(ii)whether previous development has taken place under Class Q within the established agricultural unit and, if so, the number of dwellinghouses and the cumulative floor space developed under Class Q;”;
(3) After sub-paragraph (2) insert—
“(2ZA) For the purposes of sub-paragraph (2)(bb)(ii), previous development within the established agricultural unit includes any development under Class Q that—
(a)ceased to be part of the established agricultural unit after it was developed, or
(b)was developed after the site ceased to be part of the established agricultural unit where any other site on the established agricultural unit had already been developed under Class Q;”.