I read your article, “Look what’s landed” (July 2007) about the government’s aspiration for all new homes to be zero carbon by 2016.

The article expressed the fears of many of us in housebuilding as we consider how we can meet the demands of the Code for Sustainable Homes. The experts’ views make revealing reading. Here are three examples quoted in the article: “we will have to think about cooling rather than heating” “CHP plants work, but only if you have another facility like a swimming pool”, “it has to be about more than buildings”. We could offer plenty more, equally diverse and sometimes conflicting, pieces of advice from the experts. There is little consensus here, and that is our biggest problem. If the government tells us what to do, we will do it – we have an end target, but no route map on how to get to it. Is it any wonder we’re afraid?