(1) The erection of a new single storey or two storey dwelling house is development specified for this code if the development is erected on a lot--(a) in Zone RU1, RU2, RU4 or RU6 that has an area of at least 4,000m 2, or(b) in Zone R5.
(2) This clause does not apply if the size of the lot is less than the minimum lot size for the erection of a dwelling house under the environmental planning instrument applying to the lot.