I had someone who owned a beach cottage ask me a few weeks ago about the smallest you could make a bathroom like that one, a sink and toilet on a shared wall, with the entire room as a wet-room shower. We sort of broke it down this way: 1) The shower needs to be a minimum 30" square. 2) The toilet needs 15" to each side of it's centerline to each adjacent wall, which would be 30" between walls. The toilet also needs 21" of "knee room" space between it and the wall it faces. 3) The pedestal sink needs 4" between it and the adjacent walls. My building department also translates that as needing 4" between the side of the sink and the side of the toilet tank. The sink drain needs to be 15" from the adjacent side wall. You need 21" of standing space in front of the sink. Essentially, roughly figuring the width of the room, or the length of the wall that will have the sink and toilet from left-to-right: 4" from wall to edge of pedestal sink, 11" to drain, 11" right edge of pedestal (if using a 22" wide sink), 4" to edge of toilet tank, 9" to toilet centerline (18" wide tank), 15" to wall. Total 54" wide. That's figuring with a 22" wide sink. The sink drain still needs to be 15" from the adjacent side wall, so using a narrower sink would save you half the difference between the two. Example, using an 18" wide sink would save you 22" - 18" = 4" divided by 2, or 2". So your new width would be 52". The depth of the room is limited by the deeper of the sink or toilet, typically the toilet. Say 26" plus 21" knee space for 47" deep. About the smallest pedestal sink I've seen is a 16" deep by 16" wide sink bowl. There are some smaller, but using that, you'd need a room 51" wide by 47" deep. Now were you to keep the sink on the facing wall and move the toilet to the wall on the right, my code guy still wants 4" between the edge of the sink and the projected front of the toilet bowl. No overlap, so to speak. But he doesn't consider the sink footprint to be interfering with or impinging on the toilet knee space. With the 16" sink you'd need from left to right: 4" + 11" (required 15" from wall to sink drain) + 8" + 4" + 26" for a total of 53". For room depth, this time the sink plus free space will be the limiting factor, 16" deep sink plus 21" free space, or 37" deep, you'd need a room 53" wide by 37" deep. Those numbers above are with typically-sized fixtures and using code as it applies to me. We mulled over a few other ideas, but common sense and the inspector held us to those minimums. Choice #3? You could go with a corner toilet and a corner sink. You do shopping and you do the math! Wet room requirement: You need 2" vertical minimum from the door threshold to the floor drain. Meaning if you plug the floor drain and turn on the shower, you need 2" of depth over the drain before water runs out of the bathroom door (or under the toilet) and into the house or into the house's framing bays. Also, with a small bath like that, the door will usually need to open out of the bathroom instead of into the bathroom.

plan2remodel I don't know your designer but I'm really mad at her(him?) now.. we didn't have a designer(that was hard btw..lol)..I picked very textured mosaics from Ann Sacks for the shower floor, and -after the longest search and consideration-custom terracotta for the bathroom floors..custom meant the store not only made the tile, but was able to texture it more according to what we asked them..that was a huge PITA to find a tile that would fit the style of the house, wouldn't look as an afterthought, and won't be slippery..but in the end was so very worth it. If I was able to reseach the issue and tailor the tile to my needs and to my space-your designer suppossedly more aquainted with available resources could do so much better maybe try this Slip Doctors stuff as well? it's awful being afraid of your own house last shower we had we inherited from previous owners..wasn't very very slippery but wasn't what I'd choose..simple white tile you know? I was miserable every time I took a shower. We brought in a teak chair but I was afraid to use it because I was afraid of it's slipping..even though my husband did put non slip pads on its legs and all. I didn't feel safe sitting, didn't feel safe standing.. so when we remodeled this new house(gut remodel)-I poured enormous time and others resources into making the bath as safe as possible yes this terracotta is porous can chip more easily and all but I'd rather have imperfect tile than broken hip sorry..I obviously feel strong about safety issues in general, and in bathrooms in particular it just made me sad ..one has a rare opportunity to remodel, a designer who should be very sensitive to all the issues, and it's obvious right away that a very important part was missed. (I also saw some bathrooms when we were house-searching last time, where people obviously put wall tiles on the floor-that's the worst. I could hardly walk there, and the floor was obviously very dry, house vacant and all. These things are maddenning. )

Thank you for the suggestions! Saratogaswizzlestick, I've been looking at Totos, but I'll check out the Kohler Veil, and I think a trough sink is a good idea. I'm looking at some wall-mounted corner and regular sinks, and one is kind of farmhouse-style with a trough. Christopher Lynch, I did consider a vanity against the wall on the left side, but the lack of symmetry with our light fixture would bother me. We're going to talk to our contractor this weekend about moving some pipes. It's tricky because there's not much space in the walls to do that maneuvering. Do you know if there is such a thing as a corner toilet with a skirt? All I'm finding are European websites.

We are building a log cabin/home and are struggling to find the best layout for our main floor bathroom. Because all the perimeter walls are built of beautiful hand crafted logs, we are hesitant to place the shower area against the outside wall, covering the logs and also the window (as in the drawing). Any ideas on layouts that place the shower area against an interior wall? The shower can be any size. Shifting the layout and dimensions of the mudroom space is also fine.