Our island is 900 depth, 2400 wide, with a sink in the middle (opposite the cooktop), which works well for us. Plenty of prep area either side of the sink (mind you, it's a single undermount sink, about 500mm wide, with no drainboard). If we were going to use the island for actual meals, ours is only deep enough for a person either side of the sink. So, if you're thinking of having the island as a dining area, go to the 1200 depth. Just walk around it to clean it. On the other hand, if the island is going to be for prep, and a place for guests to prop up a glass of wine and chat while you're getting dinner, 900 is fine. Our dishwasher is to the immediate left of the sink, and we have pull out waste bins underneath the sink. We have 1200 mm space from island to the wall side and the range top, and about the same to the other ends. Our fridge, which isn't huge, is in a 900 mm+ cavity which would be big enough for a deeper fridge. It's in relatively the same place your fridge is, and works fine there. Hinges are on the non-kitchen side of the door, so it opens into the kitchen. Cabinets beside it are a bit more in depth, so fridge and cabinets line up nicely. 850 for your fridge seems reasonable to me. I wouldn't put that study where you have it: I think you'll need all of that butler's pantry for butlering type storage. My 5 cents worth based on new house, new experience, absolutely no kids in the equation!

based on the dimensions shown on the plan the existing ensuite doesn't look big enough to add a bathtub unless you could take space off the master bedroom, wiw and/or add a "bay window" under the eaves and sometimes demolishing a good quality existing space is much more expensive than adding an extension (what about adding a new master suite overlooking the pool and using the old master as guest room and pantry? and, if you need an art studio do you have enough land to add another carsport and use the garage for the studio....can you post a plan showing the house on the block and the size of the block

Thank you Geluka and Margot, the breakfast bar won't be 2 level, the app we used to draw up this design doesn't allow a single piece of bench (to wrap around the support column) hence the split level look. We will have a glass door for our mud room/laundry entrance. Probably won't have a pergola as the courtyard will be quite small and narrow post extension. I am considering moving the oven tower to the end of the bench housing the stove top. Assuming a 900mm stove, 600mm oven tower that will leave 600mm clearance on either side of the stove top. Many thanks, Ee ;)

Thankyou to you all for your input. A lot of great advice and ideas. It’s only my husband and I. As it’s our future retirement home. So main bedroom isn’t an issue. As we both are up early . We have added bulk head on entries to ensuite to help divide the room a bit. Entry we like as is. As end wall will be a big feature wall. I’m half inclined to turn is And bench around but the hubby wants to leave it 🤦‍♀️🤷‍♀️ I think we will end up with a clear island bench. Possibly put dishwasher and main sink in butlers . Butlers sink over with the stove. Other end with theatre and BEd 2 and 3 will be closed off unless family and visitors are with us. So won’t be used much at all. Was another bedroom there but we deleted one .so rooms are huge. We moved garage from the other side of the house so it will be closer to the shed and saved another driveway, that’s why the patio 1 is there as a walk through to carry groceries in etc from the car. Always said I’d never build again. I hate making decisions and find it very hard to visualise things 🤦‍♀️🤷‍♀️😂😂😂 Have our joinery consultation next week so wish me luck and I’ll let you all know the outcome😉 Thankyou again for your advice.