Minor victory today though. The cautious conservation officer at the council has approved our application for slimline double glazing in the new extension of the small listed farmhouse! Don't know why this has happened....he was minded not to. It's still bonkers, we are being forced to put in single glazing in the main part of the farmhouse because it is listed and in the barn. Don't know how we can improve the environmental credentials of these buildings with restrictions like this. But we should press home our advantage and challenge that in the light of today's breakthrough.
In the meantime, trying to broker the relationship between the (real) builder and the architect. My only management tool - as in journalism it was cake - with builders it is biscuits. Moods become quickly smoothed on appearance of the chocolate digestives or the viennese fingers.