Google ecologically sustainable development it is possible. I think urban sprawl is more of an Americanism not relevant to Australia there is abundant land here
The length of the combined Kwinana - Mitchell Freeway in Perth is 102km. I think that's more than enough urban sprawl for a population of only 1.8m.
Abundant land causes urban sprawl! If more land was reserved for productive uses like broadacre farming, we wouldn't have this problem but we keep putting land under 250sqm single storey houses because they're the cheapest form of construction per sqm and we must all have a home theatre, regardless of how far we live from anywhere. Or we cut up productive farm land into rural residential "lifestyle" blocks with an olive grove, an ornamental dam and an alpaca. We live in a profligate society with no view past our own short term luxuries unfortunately...