Alex..your shower of 1300mm won't give you enough room to walk out if it's a walk in shower...the screen really need to be around 1100mm so it doesn't splash everywhere. Opening the external door outwards is okie if you've got some shelter from the elements..our entry door open out and is under a carport/deck. As per oklouise drawings with 2100mm 600mm washer dryer 900mm shower leaves 600mm for WC which leaves you 100mm either side of the WC. It's doable though your shower door will need to swing out thus not sure if you can fit the vanity across from the shower being only 1800mm wide. unless your internal access is a sliding door.. then you can fit it where the washer dryer is. you'd still need an external access opening outwards as doors are 800-900mm and if you open in you'd bump into your shower door opening out..

Hi Cassie, I think the bath under the window is best idea as you if you want you can have a 1700mm long bath and a big shower with still keeping a 1200mm vanity in the room will give you all three items of a large size. I did a quick drawing of what it would look like with the spacing you gave and the last image is of a bathroom we did with a similar spacing except with a 900 x 900 screen. Hopefully, that helps a little good luck with the renovation

Thanks Dreamer for thoughts. The better half had come up with the design and as I am standing in there now with it all ripped out, I thought about leaving as is like you mentioned. inspection panel is for plumbing as that is mine pipe for unit above. Will just treat that as is now and be villaboard template without tilea over the top so sits relatively flush and tidy Width of shower recess would be about 800. Is the same width even if kept it as is now. No real gain. WM waste requires us to cement core floor and install. another reason why I’m on your page with leaving it.

The trims if done correctly are built into tiles, so you can’t just change without removing tiles. See if you can get an off cut of the same trim, and rub back with light sandpaper and see if you can spray paint. If this works, then cover and tape up tiles leaving trim exposed and spray paint. The mirrors and towel rail are easy to remove and replace. The laundry cabinet, go to Bunnings and measure up a kaboodle cabinet and bench system.