codes.iccsafe.org/…/chapter-3-building-planning#I…

Habitable space, hallways and portions of basements containing these spaces shall have a ceiling height of not less than 7 feet (2134 mm). Bathrooms, toilet rooms and laundry rooms shall have a ceiling height of not less than 6 feet 8 inches (2032 mm).

Not a dad yet, but making sure my skills are sharp