Your toilet is not to code. You need a minimum of thirty inches between wall and vanity. You would need a 36 vanity not 48 and no room for a pony wall at all. Also, the shower seems disproportionately large for the space.

Architects are not stenographers. They do not need the added layer of wading through poor design to give you a home that suits your needs and that meets code.

Skip the intermediate bad design hand wringing and hire the architect now.

What use is a roll in shower without the whole house being wheelchair accessible? Because the bathroom sure isn’t. You can’t even get someone in there to use that. The whole bath needs to be much larger and an entirely different layout. Or that needs to be a 100% waterproofed weteoom with wall hung everything. Even then, it’s not accessible dimensions.

There is no way you could get a wheelchair in and out of that room. A wheelchair needs a 60" turning radius.

Sophie is right. Put together a list of your wants, your needs and your wishes and take those to the architect. A good architect will design a house that will fit your needs.

On a side note, have you ever used a door-less shower before? So, So Cold. Water plus draft--never again.

My late husband used a wheelchair and in his accessible college dorm bathroom (which was a wet room style but not that big) they actually had an additional heater on the wall so you could crank up the heat. Otherwise it got too cold to shower comfortably, especially for the longer showering time it may take if you’re disabled.

Also if you are considering accessibility in the future, in addition to room size, you need to consider bracing in the walls for grab bars, and extra room around the toilet for toilet-specific grab bar installation. (They’re a few ways to do it, but the most common adds ‘arms’ to either side of the toilet - usually floor mounted - to help with lowering yourself down and getting up, and transferring from a wheelchair. Takes space to fit them in and many bathrooms are just too cramped.)

Sounds like you are off to a good start. To your original question, about shower head and bench placement. I'm no help with the bench, never had room for one. For the first time ever we do have 2 shower heads in the same shower. We have lived here 3 years, and it was such a novel concept to me, that I only tried running both at the same time a couple months ago. Delicious. That is the only way to describe it. So our shower is more like 3 x 4, with one large hand held shower head up higher on one wall (more my husbands height) and on the adjacent wall, the 2nd shower head is placed lower (say 6-8"), for someone my height. When I run them both, I get water from overhead and from the side, and it is so wonderful. I actually feel ridiculously extravagant (New England ancestry) and still only use both once a month or so as a special treat, or when I'm freezing.

You could also replace that higher, hand held, with one of those combo shower bars that have a rain shower, and a sliding up/down adjustable height hand held shower head, like the Kohler Moxie wall bar shower. Just make sure pressure to one head won't take away pressure from the others--and I think you will be very happy.

Good luck with your dream home!

Olsenla - I really like the placement of bench relative to shower head in that shower. A lot of the time they’re placed so either you’re ALWAYS under the spray on the bench, or you’re NEVER under the spray on the bench, neither of which is particularly useful for showering.

We have a doorless curbless shower and I have never found it to be cold. A well insulated 21st century house should not be drafty. Our shower is only 3 x 5, though, and the room itself is not large, so a shower does not exactly set up huge circulation air currents. We have a linear drain, and made sure we could reach the controls without getting wet. We also have radiant floors.

I would focus on getting your wants/ needs list articulated for your architect, as well as a bubble diagram and some inspiration photos. Don’t treat him/her as a glorified draftsman and you will get better results.