Most growing families are crying out for ground floor space as they acquire their children's paraphernalia. The most common solution to this new problem is to extend to the rear and create a large open plan kitchen / diner. To bring in more light deep into the plan of the house, roof lights can be introduced creating an airy open plan feel. Also bi-fold doors are a great in the summer when you can open up fully to appreciate the garden views and warmer evenings.