The Town and Country Planning (General Permitted Development) Order 1995 No. 418

SCHEDULE 2

PART 16 DEVELOPMENT BY OR ON BEHALF OF SEWERAGE UNDERTAKERS

Class A

A.1    Development not permitted

Development is not permitted by Class A(e) if—

(a) it would consist of or include the extension or alteration of a building so that—

(i) its design or external appearance would be materially affected;

(ii) the height of the original building would be exceeded, or the cubic content of the original building would be exceeded, by more than 25%; or

(iii) the floor space of the original building would be exceeded by more than 1,000 square metres;

• or

(b) it would consist of the installation or erection of any plant or machinery exceeding 15 metres in height or the height of anything it replaces, whichever is the greater.