Thanks :) Yeah decided to go with tile. So sand cement is ok over existing tiles if I prep them first? Only problem is, the new pad can only be about 30mm at it's thickest (leaving up to 15mm for tiles) otherwise it'll end up being higher than the hallway floor. So I either need to make the fall shallower or not bother with the waste and make it all level. If I made it level, could I use levelling compound at that thickness or would deck mud/sand cement be the best option? Also, should I be putting in mesh for strength? (I know I should (and will) ask the local hardware what they suggest, but it's great to have suggestions from the Houzz community also)

after watching my daughter and her husband agonize over the way their expensive timber floor has not held up well after 3 years, I would recommend tiles/wood look tiles with under heating. Their beautiful warm expensive floor looks like it always needs a clean and polish, not from neglect, they have cared for it well. One of the boards now has a slight and painful moan when it's stepped on :-( I grew up in a completely wood floor home and although it looked wonderful, my Mother hated it. ....and the mats ! Wood is a lot harder to maintain than tiles ,(no matter what the die hards say) the modern wood finishes are much better than they used to be.... But a piece of wood is rather arty no matter what it's used for and it does demand to be loved and cared for.....and if something goes wrong it's a lot more expensive to fix than sand and cement. Ultimately you have to be happy. BTW underheating tiles is warmer than timber :-)

A very simple layout keeping the floor space within the kitchen, the WIP takes up a lot of space with not much gain, The broom cupboard could be moved to the Laundry/entrance, narrow. If the wall has been bumped out to the eaves on the deck side giving an extra 300 depth to the kitchen you could make the island 2700 x 1200 and all drawers. The wall of narrow pantry will hold all pantry needs and more, no deep cupboards to dig into. cheers

I'd take a totally different route . It looks like there is that narrowish window in the lounge or dining area -- I'd look at whether you could make that into a ranch-slider ( yes , I am in NZ too -- if you say ranch-slider it confuses the Aussies haha ) . You'd need a structural engineer to make sure that wall isn't load bearing , and also electrical cables are able to be moved , but I'd suspect the load bearing bits would be the corners , and you'd be able to 'open up' that wall onto the deck . While it initially may seem counter-intuitive , you could then take out the door and that other taller window -- close it in and add a couple of small windows , or how about doubling down , and seeing if you can 'open up' between what you call the 2 windows above the stove -- have 1 long flat window along there , OR even do another bay window -- that will add more light , but also by taking out the opening door , you will get an extra metre of space , That way , you can do a different kitchen design -- maybe a wall mount oven , or a pantry , a breakfast bar in a different spot -- basically , plan the kitchen and the window placement at the same time . The advantages would be more usable space , more light , an indoor/outdoor flow but through the other room , not the kitchen . But with more glass actually in the kitchen , it will feel lighter and airier , plumbing won't be as much of a hassle , it will look better . The only possible downside would be the wall you put the ranchslider in will need to be kept clear , as you may lose a bit of space there , but the breeze and openness will make up for that IMO .