no development plan, but the building authority wishes
It is rather the requirements of the state building code that you have to comply with.
2/3 of the lower floor may be a maximum of 2.30m high)
the other way around: only 2/3 of the floor area in the roof may be 2.30m and higher. Take a look at your place: have you succeeded? At first glance at the small boxes, it rather appears that you planned a two-story building.
I do not think that is okay and I want to play with open cards.
We should make it clear that YOU ask and want to receive an honest answer. So if you pretend that your needs are different, you will get a wrong answer that you can use. It simply misses your situation completely if you only plan empty rooms: even the basement is bursting with placeholders… You are practically vacuum-packing your desired future into a house. In short: it is not yet time for you to think about building a house. 1. At the moment it is financially not calculable anyway and rather a risk 2. Building a house is nest-building, which is supposed to tie a _couple_ more closely together 3. The budget is completely miscalculated and does not fit the house 4. The design is not mature The orientation with the garage in the SW is questionable. Has there even been any outdoor planning or was it omitted? Where are the terraces supposed to be? They are not at all included in the planning. Orientation of the rooms, forecourt, terraces, integration of these, division of the property into two private areas…. Everything looks just plopped on clumsily. I can make little use of the grid of the program used, and therefore cannot assess the design itself. However, the walk-in closet stands out negatively as does the too small technical/utility room, dark dining area without windows, dark kitchen in the granny flat… with the room sizes, many dark areas arise anyway in the middle of the house. A somewhat larger section from Google Maps would be useful, since you have to adapt to the neighboring buildings. I would probably have rotated the house, put a shed and terrace for the granny flat at the back, the garage at the front, driveway on the right in the east and in the SW then a terrace and garden for the main unit. And then one gets down to the house planning.