Change the Room Area Boundary Location

By default, Revit LT computes the room area using the wall finish as the boundary. You can change the boundary, specifying the wall center, wall core layer, or wall core center.

Note: You cannot change boundary locations separately for each room. All rooms in the project use the new boundary location.

1. Click Architecture tabRoom & Area panel drop-down (Area and Volume Computations).
2. On the Computations tab of the Area and Volume Computations dialog, for Room Area Computation, select one of the following options:
   • At wall finish: The room boundary is located at the finish face inside the room.
   • At wall center: Locates the room boundary at the centerline of the wall.
   • At wall core layer: Locates the room boundary at the interior or exterior layer of the core closest to the room.
   • At wall core center: Locates the room boundary at the centerline of the wall core.
3. Click OK.

Note: These settings do not affect IFC-based walls. Walls from linked IFC files use the finish face as the room boundary.