I’m adding a half bath to a finished attic. There is a 9 inch high, 1 foot deep boxed in duct next to where I’d like to put the toilet. Does the toilet have to be 15 inches from this 9 inch high box (it’s below the height of toilet seat), or can I start the 15 inches at the wall? See photo. The pink marks 15 inches from the box. I would prefer to have it where the level is so I have more room for a vanity.
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Best Answer
Yes, 15” is required from the center of the toilet to the wall/cabinet.
However, you could raise the toilet 9” to the top of the curb...a true throne.
Be sure to maintain a 6’-8” ceiling height. (Most rooms require a 7’ ceiling height, but there is an exception in the code for bathrooms. See IRC R305.)