Save big money on importing one from the UK and spend it on design to make the space work for you without the need for such an impractical solution. There are some cute, tiny wall mounted hand basins which would be a neater solution. https://www.reece.com.au/product/basins-c448/wall-mounted-basins-c452/axa-cento-mini-wall-basin-right-hand-with-fixing-1-9505814 If there is no other option here is another type of toilet/handwash product, but I don't think it looks any better than the Caromo design, although overcomes some of the impracticalities mentioned in the previous comments. https://www.reece.com.au/product/basins-c448/wall-mounted-basins-c452/roca-w-w-integrated-washbasin-white-5-star-9505427 Best of luck, Dr Retro of Dr Retro House Calls/Dr Retro Virtual Visits

One thing to watch out for with top mounted basin bowls is what your wall covering/splashback is behind it. If you are doing a mirror or tiles down to the vanity, have them installed before the bowl, otherwise sealing the mirror/tiles with silicone after is really difficult and you risk getting a poor seal where it is most critical.

Hi all, It's very difficult to find where I can get a decent quality glass bowl. The majority of the bowls which I suspect are chinese imports are tainted glass, where I am looking for a pure quality similar to the work that Euroglass undetakes. Does anybody know where I can buy one from?

A vanity bench can be made to any size. You can still have your storage at 1.5-1.6 metres, but have a bench top running the full length of wall as drawn. The builder is able to install anything that you require which is drawn on your plans and in your budget. Why is the designer saying they cannot provide a long vanity? Is this not in your contract monetary allowance? With a bench top of 1.5-1.6 metres, two basins will be squashed, and would leave no room for bench space. You have two options, either only have one basin installed, or once the home is built, put a freestanding drawer unit which is a similar height to your vanity, along the same wall.