prp's house uses large prefabricated panels based on prefabricated timber I-beams and timber skins. These are used by most of the design teams. The floors are a little deeper than conventional domestic floors but the long spans provide layout flexibility and adaptability in future. The roof is a system where two panels, each as long as the roof slope, are delivered hinged together at the ridge. The panel system provides a variety of cladding and dwelling extension options for potential occupiers.