I don't find this important at all now, and besides, you probably mean the same thing. Only your terms are confusing.
Kniestock= Dach auf Mauer deren Höhe man angibt;
correct
Drempel = Dach auf Etage.
There is no such thing or no one says that. A roof is not on a floor. The roof rests (according to my knowledge) on the wall plate, whether with a knee wall or without. The Drempel, in my opinion, is always only there to box out sharp and unwalkable angles on the floor under the slope, since you can't do anything there anyway (hard to reach, you bump your head, can't clean properly, etc.). The flatter the roof, the more likely it will be boxed out if there is no knee wall.
If your problem is that with us the attic is described as the upper floor because we somehow find it easier to understand to call an attic only when it has significant roof slopes, then I apologize. Otherwise, I find my description understandable and not wrong
No. A full storey is a full storey, whether 1st, 5th or 10th floor. It is characterized by (which differs in each federal state) 2/3 of the area having a height over 2.30 m compared to the built house area. The attic is just the floor under the roof.
Yes, floor plan and price belong closely together. We first looked for a usable floor plan and then optimized it in every conceivable way so as not to lose any area to corridors. That may be unusual nowadays but we do not want to "lose" floor space inside the house and spend money on nice hallways. We want to keep a lot of land and have a lot of living and usable space inside.
Your fear of corridors is already neurotic. A good floor plan is not characterized by minimizing corridor area. What matters is that the usable areas are optimal for the purpose they are intended for. A staircase that opens into the chill room destroys the chill room because you can no longer chill there when it becomes a passage zone for everyone who wants (and has) to go up and down. Just as an example.
Yesterday I was able to convince myself what a corridor with 2*1m in front of a double-spiral staircase looks and feels like. For us, that is completely ok. Even 90 cm walking width didn't feel bad at all.
"Ok" and "not so bad" are not really the adjectives you use to describe your dream home, right?
As for the costs – there are experts who can give you better information. That only makes sense when you place it alongside the construction service description. So far, the general contractor has also planned the basement for you unfinished. If you think this is just a misunderstanding, you are mistaken. He knows exactly that it’s already not enough that way.