What roof pitch should the roof have?
Even with a north orientation, photovoltaic systems can be worthwhile.
From experience, I can advise you to think about how you want to use the roof terrace.
If there is no panoramic view up there, which you don’t have on the normal terrace, it will be difficult with the attractiveness in a single-family house.
There’s no home office, so the only thing that comes to mind is a wellness area, since the parent area would be too complicated for me and the terrace there probably wouldn’t really be used either.
We also had the plan to regularly use the roof terrace as a normal terrace.
However, that is mostly utopian because you are too often too lazy to go upstairs, when downstairs you have everything right next to the kitchen and garden and don’t have to go down and up two floors for every new drink, snack, whatever... ;)
Our roof terrace was only rarely used in spring/autumn, because in summer you simply can’t stand being there, only late in the evening.
I built a sauna in the anteroom last winter and now the roof terrace is also a purchase that is worth its money.
On the roof terrace itself, we have prepared everything for a hot tub ([Starkstrom, Wasser]), let’s see what the future brings.
If your desired house is supposed to look like this, I would approach the following:
Relaxation area upstairs to the roof terrace, anteroom. Even accessible only through the parent area from the upper floor.
Then the bathroom on the upper floor could be used after the sauna without leaving the parent area.
A utility room will be added in the upper floor through the space freed up. Then the laundry is also done where it originates.
Space will be freed up on the ground floor, allowing the house connection room also to be used as a storage room and the guest room/office will get a properly usable size.
The ballroom remains a ballroom and the relaxation area does not become a passage, but actually becomes the retreat. ;)