The size of a half bath is not set in stone. Although building codes do not require a half bath to have specific square footage, most do require specific clearances. For example, the room must be at least 30” wide and maintain 21” from the sink to the toilet. Moreover, the door must allow for the same height clearance as other doors, which is 80”. If it needs to be wheelchair accessible, the door width should be increased to 36”.

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