Building an 'L' Shaped Structure with Full Gable Ends

Reference Number: KB-00619
Last Modified: April 8, 2022

The information in this article applies to:

Chief Architect Premier or Chief Architect Interiors


How do I create an 'L' shaped structure with automatic gable ends?

Real time ray trace perspective overview of an L-shaped house with full gable ends


A reverse gable, sometimes called an opposing gable, is perpendicular to the main gable roof. A reverse gable can join the main roof anywhere along the main roof. In this example, it joins the main roof at one end.

To build a reverse gable roof

  1. Select Build> Wall> Straight Exterior Wall from the menu, then click and drag to draw the walls for your L-shaped structure in a clockwise fashion.

    L-shaped structure in plan view

  2. Extend the baseline wall through the bump-out of the L.

    Extending the baseline wall through the bump-out of the L

  3. Select the wall with Select Objects Select Objects tool icon and then on the Edit toolbar, choose the Add Break Add Break tool icon edit tool. Click to place a break in the wall where the baseline wall meets the gable.

    Close up showing the break in the wall

  4. For each of the wall segments that need to be a gable, select the wall, then click the Open Object  tool on the Edit toolbar.

  5. On the Roof panel of the Wall Specification dialog that displays, select Full Gable Wall, then click OK.

  6. Pull the baseline wall's end back to its original location.

    Moved the wall back into the original position

  7. Select Build> Roof> Build Roof from the menu to open the Build Roof dialog.

    If Auto Rebuild Roofs is enabled, this step, along with the next step (Step 8) are not necessary.

  8. Check the Build Roof Planes box, then click OK to build the roof.

    Checking the Build Roof Planes box in the Build Roof dialog

  9. Select 3D> Create Perspective View> Perspective Full Overview from the menu to see the results.

    Perspective overview showing the result of the full gable ends on the L-shaped roof.