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How Much Does Composite Decking Cost in the Des Moines Metro Area?

August 28, 2025

Composite decking has rapidly gained popularity in the Des Moines Metro Area, offering homeowners a beautiful, low-maintenance alternative to traditional wood decks. If you’re considering adding a composite deck to your home, understanding the costs involved is crucial for planning. In this blog, we’ll break down the costs of composite decking in Des Moines, including material prices, installation costs, and factors that can impact your final budget.

We’ll also help you compare composite decking with wood and explore cost-saving tips that could make your deck project more affordable.

Understanding Composite Decking Costs in the Des Moines Metro Area

Composite decking combines the durability of synthetic materials with the aesthetic appeal of wood, offering a solution that requires less maintenance over time. However, the cost can vary depending on factors like material choice, deck size, design complexity, and local demand in Des Moines.

The price of composite decking in Des Moines is influenced by several local factors, such as the area’s climate, material availability, and the demand for deck-building services. These factors can make the pricing fluctuate slightly, but understanding the key components will help you plan your dream deck without breaking the bank.

1. Average Cost of Composite Deck

A composite deck with light gray decking and white railing with large windows overlooking a scenic landscape

The average cost for a composite deck in Des Moines generally ranges from $1,784 to $1,911, but it can vary from $1,720 to $1,974 depending on the project size and materials selected. Here’s a detailed breakdown of typical costs:

  • Small Decks (100–150 sq ft): For smaller decks, the cost typically ranges from $1,000 to $3,000. If you opt for premium materials like TimberTech or Trex, expect to be closer to the higher end of this range.
  • Medium Decks (200–400 sq ft): A medium-sized deck usually costs between $3,500 and $8,000. Costs will rise if you choose high-quality composite boards or add design features like built-in seating or stairs.
  • Large Decks (500+ sq ft): Larger decks often range from $8,000 to $20,000 or more. The cost increases with the size of the deck, the material quality, and any custom features like multi-level decks or unique designs.

These ranges are for both materials and installation combined, giving you a comprehensive idea of the total investment. Read this article to know about the best composite decking ideas from experts.

2. Composite Decking Price Per Sq Ft

The price of composite decking materials in Des Moines typically falls between $30 and $35 per square foot, but it can vary based on the material type and brand. Here’s a breakdown of common material options:

  • Polyethylene-based Decking: $6.50 to $7.90 per square foot. These are generally more affordable options for composite decking.
  • Polypropylene-based Decking: $7 to $8.70 per square foot. These offer a higher level of durability, suitable for high-traffic areas.
  • Solid Polyvinyl Chloride (PVC)-based Decking: $8.50 to $9.50 per square foot. PVC is ideal for wet areas like pool decks due to its superior moisture resistance. We also write detailed articles explaining the difference between PVC vs composite decking.

On average, homeowners are typically paying $8,000 to $20,000 for their composite deck project, depending on size and material.

3. Cost of Installing Composite Decking

A composite deck with a railing system, overlooking a backyard with a fenced-in area and trees in the distance.

Labor costs for installing composite decking in Des Moines usually range from $9 to $10 per square foot. For a 215-square-foot deck, you could expect installation costs to be between $1,721 and $1,974, including labor and materials.

Here are some additional factors that may influence the installation cost:

  • Labor Costs: Installation costs can vary, but on average, labor will make up $4 to $8 per square foot of the project.
  • Deck Complexity: Multi-level decks or those with curved edges can add $3–$5 per square foot due to the increased labor and design complexity.
  • Permit Fees: Depending on your location, permits and inspections in Des Moines may cost between $100 and $300. Always check with your local municipality for specific regulations.

4. Factors That Affect Composite Deck Installation Costs

Several factors contribute to the total cost of your composite deck installation. These include:

  • Deck Size & Design Complexity: The larger and more complex the deck design, the higher the cost. Multi-level decks or decks with intricate features such as built-in seating or custom railings can increase both material and labor costs.
  • Material Brand: High-end brands like TimberTech or Trex will increase your material costs but offer longer warranties and higher durability.
  • Site Preparation: Excavation, leveling, or the removal of an old deck can add substantial costs, especially if the land is uneven or requires special foundation work.
  • Custom Features: Features like lighting, railings, pergolas, or under-deck drainage systems can significantly increase your budget. For instance, under-deck drainage systems typically cost $2,000 to $5,000, and built-in lighting can range from $500 to $3,000 depending on the design.

5. Composite Decking Cost vs. Wood Deck in Des Moines

Comparing composite decking with wood decks helps clarify the long-term value of choosing composite.

Aspect Composite Decking Wood Decking (Pressure-Treated) Wood Decking (Cedar)
Initial Material Cost Higher ($30–$35 per sq ft) Lower ($15–$25 per sq ft) Mid-range ($20–$35 per sq ft)
Annual Maintenance Very Low (occasional cleaning) High (staining, sealing, repairs) Moderate (annual sealing needed)
Lifespan 25–50 years (durable) 10–15 years (requires upkeep) 10–15 years (requires upkeep)
Maintenance Cost Over Time Low (minimal maintenance) High (constant repairs, sealing) Moderate (higher upkeep)
Warranty 25–50 years (brand dependent) None None

While composite decking comes with a higher upfront cost, it is much cheaper in the long run due to its low maintenance needs. Over time, composite decking can save you money on repairs, refinishing, and staining.

6. Cost-Saving Tips for Composite Deck Installation

There are several ways you can save money on your composite deck project:

  • Look for Seasonal Deals: Many suppliers and contractors offer discounts during the off-season (fall or winter), which can reduce both materials and labor costs.
  • Choose Mid-Range Boards: Upgrading to mid-range composite boards while retaining the railings or other features can give you a high-end look without the expensive material costs.
  • Bundle with Other Projects: If you’re also working on landscaping or fencing, bundling these projects together with your deck installation can reduce labor costs.

7. Why Choose Deck & Drive Solutions for Composite Deck Installation in the Des Moines Metro Area

Deck & Drive Solutions is your go-to partner for composite deck installation in Des Moines. Here’s why:

  • Local Expertise: Our team understands the Des Moines climate and building regulations, ensuring that your deck will stand up to the local weather and last for years.
  • Top-Tier Materials: We use premium composite materials like TimberTech and Trex, both of which are known for their durability, color consistency, and resistance to fading, staining, and weather damage.
  • Warranty & Support: Our composite decks come with industry-leading warranties. TimberTech offers a 50-year fade and stain warranty, while Trex provides a 25-year limited warranty.
  • Expert Craftsmanship: We pride ourselves on delivering high-quality decks tailored to your home’s style and your functional needs. Our team is certified as a TimberTech Platinum Contractor and a Trex Pro Contractor, so you can be confident in our expertise.

Frequently Asked Questions (FAQs)

What is the average cost of composite decking in the Des Moines Metro Area?

The total cost for composite decking in Des Moines ranges from $1,784 to $1,911, depending on the size and material options.

How much does composite decking cost per sq ft locally?

Composite decking costs $30–$35 per square foot for materials, but the price can vary based on the brand and material type.

Is composite decking more expensive than wood in Des Moines?

Yes, composite decking is typically more expensive initially, but it saves money over time due to lower maintenance costs.

What’s included in composite deck installation costs?

Installation costs cover labor, materials, and site preparation. Additional costs may include permits and custom features.

Can I install composite decking myself to save money?

DIY installation is possible, but it requires the right tools and expertise. Hiring a professional ensures high-quality results and saves you time and potential costly mistakes.

Can composite decking be painted or stained?

No, composite decking cannot be painted or stained. Unlike wood decks, composite materials are designed to retain their color and resist fading without the need for additional coatings.

Is composite decking slippery when wet?

Composite decking can be slippery when wet, especially if the surface is smooth. However, many manufacturers, like Trex and TimberTech, offer textured or slip-resistant finishes to reduce the risk of slipping.

Get Your Free Composite Deck Cost Estimate Today in the Des Moines Metro Area!

With Deck & Drive Solutions, you can enjoy a low-maintenance, durable composite deck that enhances your outdoor space. Let us guide you through every step of the process and help you build a deck that will last for decades to come.

Reach out to us today for your free estimate!

ABOUT THE AUTHOR

Aaron Rouse: Founder & Design Architect

Aaron Rouse is the Founder of Deck & Drive Solutions and a seasoned architect with over 21 years of experience in deck building and design. He specializes in creating custom, high-quality outdoor living spaces across the Des Moines Metro Area.

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Up to 25% off  Labor

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**Valid Until January 1ST  **

Offer applies only to labor costs for the main composite deck build with railing on new or resurface projects only. Minimum project cost: $10,000. Additional options are billed at standards rates. Not valid with financing or combined with other promotions. Acceptance must be in writing (email, text, or signed document) by December 31, 2025. Projects must be started or completed by March 15, 2026. Scheduling depends on permits, material availability, and weather: early acceptance improves placement but does not guarantee a specific start date. Discount excludes demolition, repairs, and custom additions unless itemized. All work is performed by licensed professional under full liability coverage.