But if the woman insists.
I have edited it a bit, if it offers tangible advantages she would also enter from the side (by side I mean from the right and not from the street side). Next to the bay window she initially found unusual, but it is fine for her.
The building area is the reddish frame - I guessed 18 x 16. Is that correct? If you push your little house all the way back there, because of the cars, then in my opinion the terrace no longer fits into the building area. Sometimes the building authorities are generous but sometimes not. That is why you should definitely plan (or have planned) the outdoor area.
Yes, 18m wide and 16m deep. The terrace is outside, no problem for us. Garages are also allowed to be built outside the building area.
Check floor area calculation regarding the basement.
Due to the small window area, the basement is definitely not living space.
There was no more feedback from you, @GeraldG?
Regarding the living space in the basement? As I said, that does not count. With the current proposals, we actually find the arrangement with the living room quite awkward. The window perpendicular to the TV causes you to constantly see the reflection on the TV. My wife is bothered that there is no window on the side. She still thinks the kitchen should go there.