We agree; but the question is, of course:
- Does it have to be flush with the wall?
- Is flush with the frame also sufficient?
- Extra charge for one or the other?
You can really only answer the first two questions yourself, right?
As already mentioned, pay attention to the direction of the door opening. Due to construction reasons, the doors will probably open outwards. There are other solutions, but those are even more expensive.
We are not yet at the stage of interior doors in terms of a tender, but in the cost estimate, our architect once included a flat rate of €500 as a price increase. I think it’s roughly in that range, probably a bit more.
In the public area, we only have one such door (guest WC), so we are considering it there, although the idea of the door opening towards the hallway doesn’t quite appeal to us yet.
In the private area, there will be normal doors; for me, that would be throwing pearls before swine, even with children. Second point: we are getting a central controlled residential ventilation system. The overflow areas are realized via the frame / doors left open. Both argue against flush-mounted doors.