At the rally I asked a question of Richard Heggie concerning the footprint of a hut. Both myself and another attendee have similar properties. They are disused water treatment works purchased from Scottish Water. These concrete structures are like icebergs, the greater part is subground. What I would like to do is to remove the top of the structure (about 5 feet above ground) and build a hut with a 30 square metre footprint above ground. However, that leaves a 20 square metre "basement".