I've only got the one measurement I'm afraid - the length of the WIR which is 2.2 metres. The rest I'd only be guessing based on that. The bathroom is fixed as it is in the spot where, currently, the bathroom and WIR are - so we want to try to keep the plumbing where it is for cost reasons. The study is my study that I use to run the house and escape from the kids. I use it a lot and it needs lots of storage space but only really a desk in terms of other furniture. In the picture that I posted, what is shown as the proposed study and WIR are currently all one room - a spare bedroom, that I'm using as my study and it's too big for what I need so there is lots of wasted space.

Depends on budget. Many dwellings (probably majority actually) don't setdown the floor structure to end up with a flat floor throughout. It costs extra money to achieve for something that is to most people un-noticable. High quality dwellings do this all the time however. If you're going to that level of detail you should also look at setting down the floor edge where the sliding/stacking/bifold doors are (if you have them) so that the door sill is flush. This something you'll see continuously more often than the bathroom/ens floors. It was mentioned on 'The Block' recently and I've now had numerous clients asking about it and/or presuming that this how all floors are done.

siriuskey, Yes, the courtyard is open to the sky (no roof over it), I assume this is what you mean by double story. Ref. below photos, I would love to get this look, especially the first and last photo, where you can see family living space from the first floor. I can't achieve this in my plan as it eats a lot of floor space upstairs. The referred plan (photos) has a very big void combining staircase, hallway and dining area. I know it is not easy with cooling and heating when you have such a big void. So, I explored a few ideas (with my limited knowledge on this topic) before achieving the current floorplan. I have also thought about, in my current plan, extending the void on the staircase to the dining area (it is more like L shape) but i wasn't sure if that makes any difference. keen to hear your thoughts.

Gorgeous brick pavers, I love that look for the floor! It has a rustic appearance yet you're right- sophisticated, even an elegance. I think this would suit the feeling I'm wanting for the room, the pine boards have a rustic appearance, this would go well with them. We have a 1m square oak table with cross back chairs for the dining section and a La Spezia 3 light pendant (Beacon), farmhouse sink, timber hood cover to give you an idea of the look we're going for. Thanks very much for your thoughts on this. I like the idea you're going with, but yes, we have the window and door in already. Door could be trimmed if necessary. It wasn't until the window was already made and the wall sheets and cladding was removed that we realised the original kitchen layout had the back door next to the window, and the door into the laundry section was a modification. I most likely would have put it back where it was originally or had double doors. It made no logical sense for the back door to be a thoroughfare through the laundry, eliminating valuable storage space. I may have just left the kitchen in the original layout and made an entry into the laundry from the kitchen side for a laundry/butler's pantry with fridge in there. Removed the side window for more wall space for storage and changed the existing door to a window. But it's too late now, the outside of the house has all been newly clad so doors and windows are as is. There's no other possible place in the house for a laundry. It is a very tight space. Plan to build an external laundry studio in the future. The one in the house would be temporary, yet need it to accommodate a washer dryer combo for now, and be suitable for prospective buyers/renters in future if the external laundry doesn't eventuate. This is the original 1960's floor plan. A previous owner made internal access into the laundry and made bench space where the original back door was, the next owners opened up the living to dining room and blocked up the hallway doorway which became the fridge space. The cornice didn't match up in the hallway though where the old doorway was. They had made a shelf from the cut out on the hallway side, and the protruding section in the kitchen side became a kind of bulkhead for the fridge. Old hallway We've rebuilt this so that it could have an upper cabinet on the kitchen side/ hallway later if needed. But the lack of space in the hallway didn't allow us to build a linen cupboard, so that will also be needed to be included somewhere in the house. At this stage, thinking we will have to configure the laundry space to have a linen cupboard/ broom cupboard between the dining room and laundry section. Open to ideas too for storage in that limited laundry area space. I'll add more measurements to the floor plan for reference.