However, you run into the wardrobe. Is it about 10 or 15 cm? Then I would choose a 50 cm deep wardrobe or increase the house width by another 10 cm (or both).
Yes, it’s not about much more than that. The house will not be wider. A 50 cm wardrobe is already tight, even a Pax is about 58 cm deep. The office could, if the masons do a proper job, be 5-7 cm narrower.
I have now taken up a discarded idea again, since our wardrobe is actually supposed to be taken along (we already buy enough new furniture). The office is then too narrow to place an existing 250 cm wardrobe, but it could maybe be sacrificed (it has already been moved twice):
You still have a bulky wardrobe in the hallway.
Hopefully, that should only be optional.