New South Wales Consolidated RegulationsConsent may be granted to the erection of one additional dwelling on land within Zone No 1 (a), 1 (ci), 1 (cii) or 1 (ciii) (including the alteration of an existing dwelling to create 2 dwellings) where:
(a) in the case of land within Zone No 1 (a), the land is 2 hectares or more in area, and
(b) separate ownership of the proposed dwellings or dwelling could only be achieved by a subdivision of the land, and
(c) no additional access to a public road is required from the land.