This article in the Sunday Telegraph underlines why energy efficient homes – both new and upgrading existing housing stock – is such a major issue. We already know what the answer is (passivhaus of course!) but we appreciate that with retrofitting in particular there is a large mountain to climb. With the way that the new property market currently operates in the UK – developers doing all the building rather than individuals – means that the lowest standard, for highest profit, is the norm and there’s no incentive for developers to build to Passivhaus standards. The only way this will change will be if it’s easier to self build and if the demand is there from developer’s customers.