When I first moved to Canberra, they were still building homes with woefully inadequate insulation - a female friend bought a newly constructed townhouse in Ngunnawal, and it remains the most woefully insulated non-tent I've ever slept in. The relationship didn't last long enough for me to be able to tell you how it went in Summer, but I can havea guess...
Her place wasn't the only one like it - another friend still speaks with amazement at having to argue with the house salesman to put more than foil insulation into their house. They moved in five(?) years ago.
Canberra has a Labor/Green govt too, BTW.