A cutaway for a house, is a 3d model graphic or diagram in a three dimensional object. Its with parts that have been removed on purpose to make the internal parts of the house visible.
However, removing the parts, like the roof or parts of a wall does not destroy the representation because the outer context of the building or structure is kept. House cutaways are a great way to show floor plan in 3d. There are other types of cutaways used for many other industries. See more about cutaways.