What to look for when buying a knock down rebuild site and costs:
The construction of two double storey homes around 25 square each
The cost of the two homes would be around $650 to $700k including subdivision, surveying, design, demolition, planning, engineering, soil testing and all fees from start to finish.
Some areas you could be looking at are Doncaster, Blackburn, Vermont, Donvale, Ringwood and Reservoir is also worth a look.
Size of land would need to be aread more