Creating a Room Under a Staircase

Reference Number: KB-00596
Last Modified: March 23, 2017

The information in this article applies to:

Chief Architect Premier or Chief Architect Interiors


How do I create a small room under a staircase in my plan?

room under stair


Many plans use the space beneath staircases for storage or utilities.

To create a room under a staircase

  1. Select Build> Stairs> Straight Stairs  from the menu, then click and drag to draw a staircase.

  2. Click on the stairs to select them, then click the Open Object  edit button. On the Style panel of the Staircase Specification dialog:

    • Make sure that the box beside Open Underneath is checked.

    • If you want to be able to see what is placed in the room below the stairs in floor plan view, on the Fill Style panel, change the Pattern Type to None.

    • Click the OK button to close the dialog and apply your change.

  3. Select Build> Wall> Straight Interior Wall  from the menu, then click and drag to draw interior walls to enclose the area beneath the stairs.

    • Notice that once drawn, walls drawn at the same location as the stairs do not display in floor plan view.

    • Do not draw or extend a wall past the second step of the staircase.

      If you have trouble moving the wall under the edge of the stairs hold down the Ctrl key on a PC or the Command key on a Mac to allow for free movement.

  4. Select Build> Door> Hinged Door  from the menu, then click once on a wall drawn in step 4, above, to place a door at that location.

    If you prefer, you can instead create the door in a 3D view.

  5. Use shelves, cabinets, items from the Fixtures (Interior) library category or other objects to finish the interior of the storage or utility room.

  6. Select 3D> Create Perspective View> Full Camera from the menu, then click and drag a camera arrow towards the room that you created.