Grand Designs: Wirral

How do you turn your small '60s dormer bungalow into a generous 21st century piece of slick architecture for just £175k? Stuart and Rosie Treasurer from the Wirral are brave enough to give it a try. Their plan is to dramatically decapitate their bungalow, cutting the roof off to leave just the walls, then balance a big new floating timber box on top to create 5 bedrooms for them, their two children and guests