Paragraph D.1 Development not permitted
Development is not permitted by Class D if—
(a)
the ground area (measured externally) of the structure would exceed 3 square metres;
(b)
any part of the structure would be more than 3 metres above ground level; or
(c)
any part of the structure would be within 2 metres of any boundary between the curtilage of the dwellinghouse and a highway.