To pass code there must be at least 70 square feet where the ceiling height is 5 feet or.
Legal attic ceiling height.
Attic spaces can be provided by having rooms with slanting roofs.
If a room has a sloping ceiling which is common in attics at least 50 percent of the room area must have a 7 foot ceiling.
Habitable spaces that have a sloped ceiling shall at no point have a ceiling height less than 5 feet and no less than 50 of the floor area shall have a ceiling height less than 7 feet.
If a room has a sloped ceiling at least one half of the finished floor area must have a ceiling height of at least 7 feet.
Showers and tubs with showerheads must have a 30 inch by 30 inch area that has a ceiling height of no less than 6 feet 8 inches at the showerhead.
Although it is common to be 2 4m in these areas.
To prevent homeowners from creating living space that does not allow occupants to stand up.
There is no height restriction under stairs.
The rough framed opening.
This leeway comes in handy to providing extra space above with the only caveat being that the slanting roof must have 2 3 of its height no less than the standard 2 2m.
Level ceilings must be at least 7 feet high and at least 6 feet 4 inches under beams ducts and other obstructions.
Examples of these are the bathroom hallway and garages etc.
The minimum ceiling height in rooms with sloped ceilings such as a finished attic space is 7 feet over at least 50 percent of the room area.
The rest can be less than 7 feet.
The 2012 international residential code requires an attic access opening for attics with an area greater than 30 square feet and a vertical height in excess of 30 inches.
Habitable attic space must satisfy the same requirements that govern rooms in the rest of the house.
At least 50 of the usable floor space should have a ceiling height of 7 5 ft.
Attics lofts and low ceilings.
Living areas and hallways must have a ceiling height of 7 feet or more and bathrooms and laundry rooms must be at least 6 feet 8 inches tall.
In a stairway 2 0m measured vertically above the nosing line.
More than 50 of the ceiling space should be on average a minimum height.
In an attic room with a sloping ceiling or projection below ceiling line or non habitable room or similar a height that does not unduly interfere with the proper functioning of the room or space.