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lot—has an access laneway at least 3m wide and measures at least 12m × 12m, excluding the access laneway.(c) (Repealed)(2) A lot on which a new single storey or two storey dwelling house is erected must have lawful access to a public road.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