State Environmental Planning Policy (Exempt and Complying Development Codes) 2008
3.8 Lot requirements
(1) Development specified for this code may only be carried out on a
(a) at the completion of the development will have only one dwelling
(b) if it is a battle-axe lot—has an access laneway at least 3m
wide and measures at least 12m × 12m, excluding the access
(2) A lot on which a new single storey or two storey dwelling house is
erected must have lawful access to a public road.