@jmm1837, My appologies firstly to the author for being off topic. One house I lived in didn't have plaster anywhere, just pressboard for walls, the stuff notice boards are made from, so we wall papered as paint soaked in by the bucket load. then lived in a caravan and now a little relocatable cottage, a glorified caravan without wheels I say but now hubby and I are building our dream home, I have no decor or design education and have simply done my best with the plan and now the build. Great advice about making the home, warm, comfortable etc...and I'm doing what I want and not following trends BUT unfortunately at times I am truly paralized by indicision, too many choices of everything from interior colours to simple door handles and when I put my head down to sleep, my mind goes into overdrive, sleeping at times only a few hours a night ha-ha Still enjoying the process but it isn't that simple to follow your suggestions!!! I'm sure as the home progresses, with less decisions to make, it will become easier.

If you've got great project management skills, design skills and an understanding of the building process for wet areas then go for it. If not I'd recommend hiring professionals, remembering you are not just paying for the work they are doing but also their training, experience and knowledge whether that be in design or building. Some of the bathroom product supply companies offer a design service (with varying level of design skills) and some builders can give you design advice (sometimes great, sometimes not). Alternatively, there are plenty of Houzzers who are happy to offer design advice and suggestions if you wanted to throw up your floor plans and a wish list. Once you've got your design in place I'd either hire a builder to manage the project for you or do some serious research into wet areas and engage trades as required, depending on your skill level; remembering some work like electrical and plumbing must be completed by a qualified trade. There are also a number of specific Australian Standards that need to be adhered to in wet areas for yours and others safety, now and in the future.

I think they're often the same purely through decision fatigue. I'm not planning on doing mine the same because I'll have timber floors in kitchen whereas bsthroom will be tiled.

I would prefer to keep the WC separate to the Bathroom as you have 3-4 kids? who will get bigger very quickly, having a powder room downstairs won't help with the morning rush to school., But it's your house so I have added a pocket door between the WC and Bathroom. I have also taken that small robe space for an extra vanity in the WC/Powder room. No width dimesion given for the WC The ensuite could use that extra entrance space as a sit down makeup and hair bench for your wife.