The Conversation has a piece up called How to build a city fit for 50° C heatwaves. The short answer is that modern glass buildings are likely to become dinosaurs, and there'll be a return to tradition approaches that relied on thermal mass, such as thick walls and underground dwellings, as a solution. These are likely to be tempered with modern materials, such as phase-change materials. There's a companion piece, Could traditional architecture offer relief from soaring temperatures in the Gulf? So far my experience of Australian property is that most of it is poorly designed from an environmental perspective. There was an opinion piece in The Age comparing houses to tents earlier this year. I suspect that there's an opportunity for a developer to focus on green design. I've seen a few projects mentioned around Melbourne where that's an over-riding concern. But most new builds still don't use double glazing, which has been standard in the UK for decades, so there's a long way to go.