Well you have to buy a mixer that goes behind the wall which will add expense unless you get a faucet with a bridge in front of the wall. The wall will have to be opened up to mount the rough-in, then fixed. Wont be able to do plumbing in the wall if it is an exterior wall in cold climates. I will be doing a wall mount, I figured "heck, its like a shower install, how difficult is that?" Any other expenses? I don't know.

We just did a wall-mounted faucet as well, but with an undermount sink. The faucet was mounted approx 6" above the countertop, I like the look of your set-up; it's exactly what was in my mind. Thanks for sharing, especially the pictures! Most importantly, you will need a good quality faucet. No matter what I do, I'm going with good quality, name brand faucets. Of all the things I don't want to go bad in my house, water-containing items are at the top of the list. After that decision, we chose these particular faucets due to the the length of the spout. How far does your faucet protrude from the wall? Stephemt, I'd like to hear the same answer about your layout. I'm leaning towards an undermount sink like Stephemt's. Does this make a difference? That said, installing wall faucets is a lot more complicated then installing countertop faucets. In our case, we built a small pony wall (open at the bottom) in front of what's an exterior wall. I think I'm into the pony wall -- it makes for a nice ledge. My sink will be placed against an interior wall, but the kitchen is on the opposite side; I can see the pony wall as a way to protect the plumbing /make it accessible -- am I thinking along the right lines? Thinking of function, would you do the pony wall again? If you hire a plumber, you will need to know and communicate the thickness of your finished wall before the rough plumbing is installed. Oh, I'm hiring a plumber. I admire you for DIYing your bathroom, but that's pretty far outside my current skills set. I wouldn't have thought to let the plumber know ahead of time that the wall would be extra-thick -- valuable information! And thanks for the nice, clear shot of your faucet. Definitely helpful! I don't see a need for separate hot and cold handles other than for style reasons. It's just as easy with a single lever to choose either hot or cold. Personal preference. What we have are "click-clack" touch drain plugs (what I called pop-up), we do not have the lever rod-based "pop-up" drain plugs (what I would call pull-up). Okay, I understand the difference now. I've only ever had the rod-behind type and didn't really realize another option existed. Well, not since I lived in my grandparents' old, old house and we had plastic rubber "stoppers" that we placed over the drain. I'm glad to recognize that options exist, but I think I don't care about this detail. Many thanks to all!

I used to have a tub/shower combo with the diverter and I would run the water through the tub until it was the right temperature and then switch to the shower head. I would then get in. Getting wet or whatever was never an issue. I replaced the tub/shower combo with a shower that has the footprint of the tub and it has a regular shower head plus two hand held shower heads with a three way diverter. There really isn't much of a cold burst of water when I divert from one fixture to another because there is only a tiny bit of water that is in the pipes that needs to come out before the hot water comes through. It's really not an issue as it is not at all like standing under a shower head waiting for the warm water to come from the main source where there is probably a significant amount of water that needs to come through before you get the right temperature.

The toilet is awfully crowded. And that’s the most used component in any bathroom, together with the sink (I hope together!) . It needs to be the center of at least a 36”x 66” clear, unobstructed, space. It should not be an afterthought because you are placement favoring the least used component in a bathroom. Design anything around how you really use it, not the fantasy of how you think you might use it.