With a bit of work, I've managed to find a supplier used by our builder who has stock of the original vanity and basin!

HI Renae, I like your colour choice black & white, I went all white in my renovations of kitchen & bathroom and just by adding a bright coloured fruit bowl, vase, pot plant and a small painting in the kitchen made the kitchen look fresh whilst in the bathroom I just added bright towels bath mat. I changed the colours in winter to warm colours and cooler colours in the summer both kitchen and bathroom. These are simple and cheap things to change a look whilst if you go for timber it can date quickly and timber absorbs moisture so it has to be looked after (time consuming and $) looking forward to seeing your finished renovations.

I would ask the builder about the best solution for the windows in the new ens and laundry as it will depend on the wall structure and waterproofing requirements but it should be more cost effective to install two windows side by side in the old laundry window opening as the windows would need to be ready to install as the old Window is removed and new dividing walls installed ..and, as i would be reluctant to remove the external laundry door, i suggest a tall storage cabinet against the bathroom wall with the ironing board on the external wall and if you decide to lose the door add extra storage in front of the door

Is the ceiling cavity above the bathroom available or does it have living space or similar above it? If it is free I would most certainly recommend a "solar tube" type solution - that is going to full your room with natural light during the day. As you have rectangular tiles that are off centre from the vanity, I would go with a large square mirror with a silver frame and I love the back lighting of the mirror as was suggested by another person but is this possible now that you have completed your tiling. Alternatively you may wish to go with a cabinet / mirror to allow for more storage of smaller bathroom items that you use daily.