The flatter the property, the less possible filling or excavation needed. This would mean less retaining walls and less cost in construction.
North Orientation:
Dwellings should receive good northern light to living rooms and to make rooms functional and open on to private open spaces.

It has been determined that the whole of Victoria is bushfire prone. It is whether this may or may not affect the building construction requirements. When looking at a site, the bushfire assessment will consider vegetation within 100m of the site, and site fall to determine a bushfire (BAL) requirement. This could cause additional costs. During the planning process the council may not consider the appropriate use of materials in your proposal and you may end up with a permit for dwellings that you cannot afford or are not feasible to build. Many council’s are now requiring a BAL assessment through newly implemented BMO (Bushfire Management Overlay) controls.