However, you don't use something like that everywhere. In the living room and dining room, yes, but not in the pantry, utility room, bathroom, ...
That also depends a bit on the floor plan. Adjacent doors should be identical, no matter what is behind them. But where possible and not visible from the entrance/living area, that is certainly an alternative to save money. From the garage to the technical room, one could do without such doors.
Matter of opinion – I would probably carry it through completely on one floor, unless the doors are so far apart that you can't see it. In our case, it's also like this: you can only see the nice flush-fitting look in the hallway at two doors; at the other four doors, you can only see it in the respective room. But that doesn't bother us, since we also want to enjoy the nice look in the room.
And if you are planning such fancy doors anyway, the base will probably also be flush, and then it really looks really stylish. I also made my base flush or it stands slightly inside...unfortunately, for the doors there was only enough budget for flush with concealed hinges, anything else really breaks the wallet[emoji23]