Now you can design your own deck with the new web-based Simpson Strong-Tie Deck Design Tool. It's easy and it's free!   ( Be sure to read Helpful Hints below. )

The free Simpson Strong-Tie Deck Planner software allows you to customize the size & shape of the deck, including adding multiple levels. Change the color and style of the decking, railing and support structure. Add walls, complete with windows and doors. You can even add patio furniture, potted plants or a barbeque grill.

At the end, you will receive a complete Deck Design Report.


  • Plan view with deck dimensions
  • Materials cut list
  • Estimated materials list
  • Permit pages
  • Glossary of terms
  • Installation considerations
  • Tools required

Here's an example of the report you'll receive: Example with Trex Decking (546 KB)


Helpful Hints -

This is a web-based program that runs in your browser. There is nothing to install. However, it is designed to run on faster computers with larger screens and high-speed internet access.


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