How Much Does it Cost to Build a Composite Deck?
Are you ready to build a deck that fits your budget? Get a deck material cost estimate with the Trex Cost Calculator tool. Plug in your deck dimensions and answer a few questions to get a quote for the material cost of your new deck. On average, the estimated material cost for a composite deck runs from $21 - $30 per square foot (including substructure, decking, hardware, and fasteners).* Keep in mind, labor costs typically account for about 2/3 of the total cost of your decking project.
Composite Deck Costs by Deck Size
This composite decking price chart provides an estimated breakdown of composite decking costs based on deck size and square footage. It includes essential information on material costs only for various common deck dimensions, helping homeowners accurately estimate expenses. On average, the estimated material cost for a composite deck runs from $21 - $30 per square foot (including substructure, decking, fascia, hardware and fasteners).
*Source: HomeAdvisor "How Much Does it Cost To Build A Deck?" 2022
| Deck Size (ft) | Square Footage | Composite Deck Materials Cost |
|---|---|---|
| 10 x 10 | 100 | $2,100 - $3,800 |
| 10 x 12 | 120 | $2,400 - $4,100 |
| 10 x 16 | 160 | $2,800 - $5,000 |
| 10 x 20 | 200 | $3,400 - $6,100 |
| 12 x 12 | 144 | $2,700 - $4,600 |
| 12 x 16 | 192 | $3,100 - $5,700 |
| 12 x 20 | 240 | $3,700 - $7,200 |
| 14 x 20 | 280 | $4,200 - $8,400 |
| 16 x 16 | 256 | $4,300 - $7,800 |
| 16 x 20 | 320 | $4,800 - $9,600 |
| 20 x 20 | 400 | $6,000 - $12,000 |
| 20 x 24 | 480 | $6,700 - $14,400 |
| 20 x 25 | 500 | $7,700 - $16,300 |
| 24 x 24 | 576 | $8,140 - $17,000 |
Four Factors That Impact Deck Pricing
The design, shape and chosen product line for your deck will affect material and labor costs depending on its complexity and price point.
Labor and management account for nearly two-thirds of total costs no matter your deck design. We can help you find a builder or you can build it yourself.
How to Determine the Labor Cost of Building a Deck
Consider Professional Rates
If you hire a contractor, your deck size and design (such as a picture frame design, stairs or a multi-level deck plan) will likely affect your contractor’s rate or total labor costs.
Choose Wisely
When it comes time to pick your contractor, there are a few factors to consider to ensure the best return on your investment. Discover helpful hints and best practices here.
Services and Fees
Common services and fees associated with a professional build include consultation, permits and licensing, site preparation, insurance and the actual labor cost per hour to build your deck. Each professional has their own rates, but keep reading to learn more about estimating labor costs.
Hire a TrexPro® Builder
Looking for a builder versed in all-things-Trex? Hire a TrexPro® builder. These builders are equipped with talented insight from previous Trex deck projects. Find a Pro near you.
Labor Cost to Build a Composite Deck
Professional labor costs for deck building vary based on location, size, and complexity. Here's how to estimate these costs to decide whether hiring a professional or DIY is right for you:
- Labor costs for installing a composite deck typically range from $55-70 per square foot.*
- This average is based on building a ground-level deck (excluding railing or substructure costs).
Let's explore common deck sizes and estimate the labor costs involved.
*Source: HomeAdvisor "How Much Does it Cost To Build A Deck?" 2022
Decking Decisions: DIY Deck Build or Hire a Deck Contractor?
How to Determine the Cost of Building Your Own Deck
Determine Square Footage
First things first, determine your deck’s square footage by multiplying the length of your deck by the width. Don’t forget to factor in any additional areas like stair landings and odd shapes.
Factor in Materials
Gather the Trex® decking and materials needed for your DIY build, including your Trex Hideaway® Hidden Fasteners and railing.
Use Our Cost Calculator
To receive an estimated cost for your materials, use our Cost Calculator Tool. Just plug in your deck dimensions and answer a couple of easy questions.
Find Your Building Codes
Keep in mind, there might be costs associated with obtaining your local building codes. To find the latest building codes and procedures for your area, visit your local government website or contact them directly.
Stock Up on Equipment
Do you have the tools and equipment you need? If you’re starting without a wood frame, you might need more than you think, but you can often rent equipment from your local hardware store.
Keep Time in Mind
Time and energy can be overlooked expenditures. Depending on the complexity of the deck design, expect to spend several weekends with hard (but gratifying) work on preparing the site and building your new deck.
*Average price range excludes Trex Signature® decking, our luxury decking collection. Trex actual material costs and install costs can and will vary based on geographic area, site location, seasonality, design complexity, whether the product is stocked locally, and additional features such as stairs, angles, curves, lighting, etc. For most professionally installed projects, materials constitute up to one third of the total cost.
