Using Open Below Rooms to Define an Opening to a Lower Floor

Reference Number: KB-00210
Last Modified: July 20, 2021

The information in this article applies to:

Home Designer Professional or Home Designer Architectural or Home Designer Suite


I want to create an opening or a hole to a lower floor, such as in a loft, balcony or mezzanine from my current floor but I cannot seem to make it work. How do I accomplish this task?

Stairs leading to an open second floor


Creating a loft can be accomplished in Home Designer by utilizing a specialized room type called Open Below.

To create an area within a room that opens to a room below  

  1. Define the area you wish to open to the floor below by using any combination of the various wall types.

    • If you don't want any physical walls or railings, use the Room Divider  tool by navigating to Build> Wall from the menu.

  2. Using the Select Objects tool, select the room, then click on the Open Object edit button.

  3. On the General panel of the Room Specification dialog that opens, select the Open Below option from the Room Type drop-down menu, then click OK.

    Floor plan view of the open below room

  4. You should now be able to view an open area in a 3D view.

    Camera view showing the open below room