yes there is space for a stacked washer/dryer combo or washer with wall mounted dryer. There is also a small amount of room for an overhead cabinet or shelf (which we wont put in initially to keep flexible). I think the market will likely be midlife downsizers like us or holiday home given location (we are eastern beaches in Noosa), possibly not enough land for a young family unless they want low maintenance.. Thank you for feedback everyone....its still a tricky decision....so please keep ypur thoughts coming in

great idea but keep in mind that if the bottom of the machines is 90cm off the floor the standard top controls would be at about 1.8m..would it be more comfortable for the machines to be raised a little lower? ...some of the manufacturers offer a WM stand with drawer that might be worth considering as the machines might be too heavy for standard cabinets and condensor dryers are recommended to be on the floor because they're too heavy to be raised but, to answer your question, the standard waste pipe is already higher than the drains so there shouldn't be any problem with a raised installation but check with the manufacturers of the machines for specific written advice to show the plumber (eg you may need a longer hose?) and talk to your builder and plumber to make sure that your special installation is written into your contract as it's easy for any variation from standard to be overlooked

Thanks Kate. Our house has 2 bathrooms. So would that mean that in theory I could put the washing machine in one bathroom and that the sink in that bathroom could be classed as the 'washtub' while the handbasin in the second bathroom covers off on that requirement?

Why is my Electrolux washer/dryer combo leaving stains on my clothes? Which do not come out even with a Vanish wash. I'm guessing grease/oil stain?