By default this is an open area which would include the floor allowance under the stairs. However once you seal it there is no more floor allowance, why is that?
Kvav27 did yours stay at 2040mm or they have to cut that down?
We had our ground floor & first floor height increased to 2590mm so I think the door stayed at 2040mm. We are still to have handover, so cannot confirm. ours was already sealed, its just that we asked for a door.
Do you have a picture of how this looks?[/quote]