Thank you very much for your opinions.
We thought that maybe we could make the utility room and office smaller and omit the dressing room upstairs, and also reduce the bathroom to 10 sqm.
In addition, we are considering opting for a double carport for €15,000 instead of a double garage (€31,000).
How many square meters are sensible for a utility room in a single-family house without a basement?
The house can be shortened by one meter in terms of rooms.
But you have also chosen the largest stairwell variant.
Utility room/housekeeping room 8-10 sqm including laundry and preserves, but with space for clothing, sports, decorations, and tools in a 4-person household...
Compared to the children's rooms, the circulation areas are well equipped ;)