Building a Multi-Level Deck


Reference Number: KB-01240
Last Modified: January 28, 2025

The information in this article applies to:

Home Designer Professional or Home Designer Architectural or HomeDesigner Suite



QUESTION

I would like to build a deck with multiple levels. How do I do this?

Camera view of back of house with three deck areas connected by stairs where middle deck is lowered


BEFORE YOU BEGIN

In order to make this design successfully, you may want to learn about creating a sloped landscape for your terrain. For more information on that process, please see the "Modeling a Sloping Terrain for a Walk-out Basement" resource in the Related Articles section.


ANSWER

In this example, we will be begin by creating a structure that is 45' x 30' in size.

With the structure built on a sloping terrain, decks can then be added to the design.


To build multi-level decks

  1. Navigate to Build> Railing and Deck> Straight Deck Railing , then click to drag out deck railings, creating several decks as shown in the image below.

    Note: Be sure to keep all three decks that will be created in this example completely separate from one another.

    Floor plan view showing three deck areas drawn on side and back of house with a gap between the decks


  2. Once your decks have been placed, use the Select Objects  tool to click inside of the room that makes up Deck 2, then click the Open Object edit button.


  3. On the Structure panel of the Room Specification dialog that displays, set the Floor height to -21" and click OK.

    Room Specification dialog with -21 inches entered for Floor value


  4. Next, select Build> Stairs> Straight Stairs  and click where the different decks would meet.

    In this example, two separate staircases have been created on Deck 2, as shown in the image below.

    Floor plan view with stairs placed in Deck 2 facing each of the other two decks


  5. Now, use the Select Objects tool to select the long, vertical deck railing on Deck 1, and lengthen it using its edit handle until it meets up with Deck 2.

    Adjust the first railing on Deck 1


  6. Next, Select  and Delete  the small, horizontal railing that originally was the top-most part of Deck 1.


  7. Lengthen the long, horizontal railing that is part of Deck 3 until it connects to Deck 2.


  8. Select and Delete the small, horizontal railing that originally was the left-most part of Deck 3. Your plan should now look similar to the image below.

    Results after adjusting railings


  9. Use the Select Objects  tool to select each of the stair sections, then adjust their width so that they span the width of the deck(s), as shown in the image below.

    Floor plan view showing stairs resized to width of upper decks

You are now ready to continue customizing the design, or take the information that you have learned in this article and apply it to your own plan.