I'm remodeling a very small (62" by 71") bathroom which has a very unusual 22.5" toilet rough-in. The room is gutted with the toilet removed (I measured from the studs to the center of the pipe). Is there any way to convert without jackhammering the foundation. I looked into wall mounted units as well but it still would require cutting the foundation. This room will have a shower, sink, toilet and small counter, so every square inch is considered prime real estate and can't be compromised.

There is no such thing as a 22 1/2 rough toilet. I believe 14 is the max, the norm is 12. You will either have to break slab and move drain, or build out the wall to compensate. Don't recommend a wall mount toilet for residential housing. Is the toilet near a corner. If so, what is the measurement to the other wall. Your name suggest that you are a flooring installer. I would recommend either calling in a plumber, or have the homeowner call a plumber to give the best solution to the problem. I may be wrong. If you feel you have the expertise to solve this problem(with some guidance from this site), then we will try to help as much as possible. If there was truly a 22 1/2 toilet, please post a pic of the toilet here. Im betting it would be worth a lot of money. Lol

I think mygirlsdad gave you a good answer. I would just like to say one thing. If you are asking if you can get a commode with a tank that is only 22-1/2 wide then the answer is yes.

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I'm remodeling a very small (62" by 71") bathroom which has a very unusual 22.5" toilet rough-in. The room is gutted with the toilet removed (I measured from the studs to the center of the pipe).

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I'm amazed that no one has asked the question. Tell us what size toilet you took out and why Can't it simply be reinstalled? Let me kmow, Tom

Hi Tom,
Thanks for your answer, actually the toilet was always missing. It was, believe it or not, stolen by the previous tenants. This was before I bought the house. However, from what I know, it was not a custom toilet, there was simply a lot of room between the wall and tank, something I'd like to avoid. I have the tools and know-how to move the drain, I'm just curious if there's a better way.

If the toilet was missing than: The measurement you are giving us is probably Side Measurement measuring on the shoulder side. Therefore, toilet will be installed the other way around, 45 degrees to the left or right.

Milo,
Unfortunately 22.5 " is the closest wall to the drain. I'm now thinking of building my own toilet. Yes, maybe i can run 3" ABS above the foundation back and forth and frame the toilet around it. The tricky part would be the height and to get the bowl inside the frame coated and sealed to the abs pipe. If worst comes to worst I'll just have a Chinese toilet. Has anybody ever seen a homemade toilet?

Maybe, you can leave the toilet where the floor opening is now - and build a small parapet wall behind it.

Agree with milo and ball. Would be the easiest fix.

I have only seen Homemade wood tanks, but the bowl is always factory made. It would be cool if you could construct your own toilet, but I believe it would be a problematic stool. Stick to what works. If you do decide to build your own, please let us know how it works out, would love pictures of it from start to finish.