Do you have to have wall units on that wall? you could go for shelves and avoid the headache. Or maybe you could get a carpenter to box the gap:or build small fake units: Or use some slim cabinets:

Good for you. what's your dilemma?

I am not sure what you're asking here. Has an architect started work on these? They should be able to advise. Standard floor to ceiling height on a new build is usually around 2.4m. Between floors, this allows for plasterboard ceiling, joists and floorboards which will be around 250mm - 300mm depending on what depth of floor joists are needed. The overall height of the build you or the architect asks for will be to the ridge of the roof and this obviously depends upon the size, style and pitch of your roof. To give a lofty feel you can go up to 3m floor to ceiling ...a big stately home mansion tend to start at 3.6m. Even 2.7m will give you a better feeling of space but I would usually look at this to be in proportion with the size and grandeur of the house in general. There are also lots of other interior design tricks you can do - like the use of colour, direction of flooring and wall materials or adding double doors from your hallway into your other rooms, that will also help to make the rooms feel larger and more specious. I hope this helps and that you will keep us up to date with your journey :0) Best, Gina

All my ceilings are 2.4m