(1) The standards specified for that development are that the development--(a) must be contained entirely within the roof space, and(b) must not result in a change in the roof pitch, and(c) must have one dormer window if the building is less than 6m wide or 2 dormer windows if the building is 6m wide or more, and(d) the flashing or waterproofing for a dormer window must not span the roof ridge, and(e) if it is constructed in a heritage conservation area or a draft heritage conservation area--(i) must not contain a dormer window or extend the roof in any way, and(ii) must only have windows that are flush with the existing roof plane, and(iii) must only have windows that are located in the existing rear roof plane, and(iv) must only have windows that do not exceed 1.5m 2 in total.
(2) A dormer window referred to in subclause (1)--(a) must not have a width of more than 1.3m, and(c) must be set in at least 500mm from the edge of the roof, and(d) must be at least 200mm below the existing roof ridge height, and(e) on the side or the rear of the building, must not have a total area of more than 4m 2.