The question is very simple.

Why in a country -continent, with so low resident density, the residential land is so expensive?
Why the city councils, state and federal governments, do not create more, bigger residential areas with less restrictions?
It is seemed that land developers, real estate agents and mainly high taxes and restrictions on land or buildings play the main role.

Antonios Symeonakis
Adelaide

The question is very simple.

Why in a country -continent, with so low resident density, the residential land is so expensive?

Not sure buy I'll have a go.

The more they allow expansion of urban communities the more infrastructure they need to provide. Car hours are also increased. They want re-development not new development I think!