Attention, it’s going to be complicated: I would probably pile up in the front and leave the garden at the back. At the front apparently a bungalow with skylights (higher ceiling in the open-plan area without intermediate ceiling including roof windows on the south side, an attic in the higher north part of the sloping roof) Terrace in the SW. Oh yes: turn the garage 90 degrees clockwise and build on the boundary, 5 meters to the front. To park, you drive through a curve, sounds worse than it is. Do without a direct south window in the bay. Then stairs to the basement: there floor-to-ceiling windows in the bedrooms with a continuous terrace in the basement. The terrace has a slope towards the garden, so it lies lower. You have to be clever with the bathrooms if they are to have windows... Garden in the east as an intermediate level with some steps in the south leading to the entrance/terrace level. Kitchen and/or dining area oriented east-west, corner terrace. Also a bridge over the basement terrace into the garden in the east. Were my thoughts understandable?