Walls, floors, ceilings and roofs have a framing configuration assigned to them in their properties. You can instantly view just your house frame using the Display Framing tool, then return to a regular view of your model at any time.

To display framing:
Select View > Framing Visibility > Display Framing.
Note: You can also use the View Filter to display framing. However, the framing will not be displayed on its own unless you turn everything else off.
Note: Framing cannot be selected for editing. It is available for viewing purposes only. You can, however, change the framing members used for walls, floors, ceilings and roofs. Framing members are included in the project estimate.