It's a no-brainer. It has to happen in Perth. And faster.
We are now the second most spread out city in the world - 150km long.
It costs the state (ie you and me) three times as much to service greenfield lots as infill lots.
Apart from the economics, there's the social benefit. We're a city of loners on our suburban blocks.
Will infill result in the loss of trees?
Yes, of course.
That's why THIS is the look of the new urban forest.
Streets are the place to have your trees as they're basically safe in perpetuity.