Adding a Bay, Bow, or Box Window

Reference Number: KB-00508
Last Modified: February 3, 2022

The information in this article applies to:

Chief Architect Premier or Chief Architect Interiors


What are the different ways to create a bay, bow, or box window?

Perspective camera view of a bay window on the first floor of the house


Bay, bow, and box windows can be created either automatically or manually. This article will describe how to automatically create a bay, bow, and box window and how to manually create a bay window.

To create a bay, box, or bow window automatically

  1. From the menu, select Build> Window> Bay Window , Box Window  or Bow Window .

  2. Once you have made your selection, click once on a wall in which you would like to add the window. A window of the type you selected will be created at that location.

    Starting in X14, automatic bay, bow, and box windows can be copied and pasted in different areas of your design using the various copy/paste tools. 

  3. In X14 and newer versions, automatic bay, bow, and box windows can be exploded into their individual parts to be fully edited using the Explode Bay/Bow Window Explode Bay/Bow Window tool icon tool in the Edit toolbar.

    Note that these parts cannot be recombined once exploded, but settings specific to the bay, bow, or box window, such as roof plane and foundation properties will remain intact, and can be altered at anytime by accessing the Room and/or Wall Specification dialog(s).

Note: A component window within a bay, bow, or box window can be resized like any other standard window. To select a component window, click at the location of the component in question, then click the Select Next Object  edit button or press the Tab key on your keyboard.

  • Only the bay or box window component that was clicked on is selected using this method. If you need to select a different component, click on it and repeat the process.

  • In a bow window, all components are identical, so only one component can be selected. Changing this component changes them all.

To create a bay, bow, or box window manually

Bay, bow, and box windows can also be created manually using walls and standard windows.

  1. From the menu, navigate to Build> Wall> Exterior Wall  and draw the walls for the bay, bow, or box window bump-out.

    Exterior walls of a bay window

  2. Once the additional walls are in place, you will be able to add windows by selecting Build> Window> Window  from the menu, then clicking in the wall where you would like to place them.

  3. Using the Select Objects tool, click on the straight wall that is now passing through the bump-out to select it, click on the Add Break Break tool icon edit tool located in the Edit toolbar, then click to place break points where the newly created walls intersect.

    Breaking interior wall of the bay window

  4. Select this newly defined wall segment using the Select Objects  tool, then click on the Open Object  edit tool.

  5. On the General panel of the Wall Specification dialog that opens, place a check in the Invisible box, then click OK.

  6. Take note of the fact that the three walls of the bay window, as well as the invisible wall segment, combine to form a complete room. Click on the Select Objects  tool, highlight the bump-out room, then click on the Open Object edit tool.

    Setting the interior wall to invisible on the bay window

  7. In the Room Specification dialog that opens:

    • On the Structure panel, specify the room's floor and ceiling heights to your liking.

    • On the Moldings panel, add or remove moldings to the area.

    • Make any other desired changes to the room, then click OK.