The string closest to the camera represents the building line, the string behind it represents the building line - hence the second pole is situated at the east corner of the house to be. At this point, there will be a foot bridge leading to a) and art studio and b) the master bedroom and a staircase will go down to the main level (kitchen and lounge area). The sketch below is a view of the house from the bottom north corner of the garden. It shows the bottom level (flat), the intermediate level (main house level - deck, lounge, kitchen, fireplace, dining area) and the top level (master bedroom and art studio)...