How Much Does it Cost to Build a Deck?


Let's Crunch Some Numbers

Planning your dream deck can be a lot of work. But with the Trex Deck Cost Calculator, we've made it easier to estimate how much it costs to build a Trex deck. By factoring in the anticipated size of your project along with the estimated costs for material, you'll have a better idea of just how much it will cost to build a high-performance composite deck. To give you a general idea, the average material costs for a deck run about $12.12 per square foot. For a more detailed and accurate deck cost estimate, please contact your local dealer or TrexPro.

The Three factors behind deck cost

Labor accounts for nearly two thirds of the cost to build a deck


Labor and installation costs account for nearly two-thirds of the final deck cost. That's the majority of your deck cost no matter what materials you choose-good news for experienced DIYers.

Raw materials like decking, railing, and hardware are just one fraction of the cost to build a deck


The raw materials behind a deck represent only a fraction of the total cost. This includes the substructure, decking, railing, hardware, and any add-ons you may want to tie it all together.

It's important to keep in mind that the size and shape will have the largest impact on the cost of your composite deck


The size and shape of your deck will have the greatest impact on the cost of your materials and labor. Most decks are built in increments of 2 feet for material efficiency.

Trex is easy to work with, easy to maintain, and now easier than ever to plan for

Our Trexperts set the record straight on a few myths about composite decking.


Tips and Options


There are several ways to save on the price of your Trex composite deck without cutting corners


Tips for the Budget conscious

Consider these suggestions to help cut cost without cutting corners.

  • Do it yourself or hire a deck builder in the off-season to save on installation fees
  • Opt for straight sections of decking and stairs over more complicated curved designs
  • Get more use out of your space with efficient features like outdoor storage sections
  • Use creative design tricks, like a mix & match color scheme, to up the style without upping the cost
  • Look into Trex financing options to put the luxury deck you want within reach



Enhance your Trex composite deck with stylish add-ons


Don't forget to factor in any stylistic additions.

These add-ons can take your project to the next level of style and safety.

  • Trex Fascia adds beauty to the side of any deck, concealing rough edges and bridging unsightly gaps.
  • Trex RainEscape helps drain rain and snowmelt, keeping the space below your deck dry and liveable
  • Trex OutdoorLighting can help you step safely and keep the party going long-after the sun goes down
  • Trex OutdoorStorage helps keep your deck beautiful and useable by providing out-of-sight storage
  • Trex Outdoor Furniture is as comfortable as it is durable with styles to match any taste from traditional to modern
  • Trex Pergola can add elegance, charm, and a little shade to your outdoor oasis