The complex plan of this private house in Northaw, Hertfordshire, is designed to integrate house and garden. The focus of the plan is the staircase which allows open plan living spaces. A major feature is an egg-shaped bathroom 'water drop' which rises from ground level through the first floor roof. Construction is timber frame and the aim was to achieve a low wall-to-floor ratio to reduce building and maintenance costs. The quantity surveyor is Dobson White Boulcott, the structural engineer is Techniker, the services consultant is Mendick Waring and the contractor is LAD Construction.