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Cost of a Composite Deck in Montgomery County: Real Examples & Estimates

August 24, 2025
A multi-level composite deck with stair steps, featuring seating and a playhouse in the background.
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When planning to install a composite deck in Montgomery County, including Rockville, MD, understanding the total cost is essential for managing your budget. Composite decking offers durability and low maintenance compared to traditional wood, but prices can vary depending on materials, deck size, and installation complexity.

This guide breaks down the cost of composite decking and provides an overview of general deck installation prices to help you plan your project. Our BTN deck experts also write in-depth articles about composite decking ideas to help you choose the better option

Average Cost of Installing Composite Decking in Montgomery County

A composite deck with black railing and wooden posts, showing the smooth, light-colored decking boards.

The cost of composite decking typically ranges from $8 to $16 per square foot for materials alone. For a fully installed deck, the total cost generally falls between $25 and $45 per square foot, including labor and additional components like railings, lighting, and custom designs.

Here’s a breakdown of the cost components:

  • Material Only: $8–$16 per square foot
  • Installed Cost: $25–$45 per square foot (includes labor, installation, and accessories)

Labor costs typically range between $2 and $5 per square foot, and additional costs can arise depending on design complexity or added features.

For styling ideas that impact cost, browse our two-tone decks and composite decking Ideas.

Sample Pricing for Composite Decking

Deck Size Material Cost Installed Cost
12×12 (144 sq ft) $1,152–$2,304 $3,600–$6,480
12×16 (192 sq ft) $1,536–$3,072 $4,800–$8,640
16×16 (256 sq ft) $2,048–$4,096 $6,400–$11,520

Factors Influencing the Cost of Composite Decking

A composite deck with white and black railings, showcasing smooth decking boards with wet surfaces after rainfall.

Several factors affect the price of composite decking, including deck size, materials, and design complexity. Here’s a closer look at the key components that contribute to the final price:

  • Material Choice: Premium brands like Trex and TimberTech offer various collections, with prices ranging from affordable options like Trex Enhance to higher-end products like Trex Transcend or TimberTech AZEK. Prices typically range from $8 to $16 per square foot for materials alone, with labor and installation costs adding significantly to the total.
  • Deck Size: The larger the deck, the more expensive it will be. For example, a 12×16 deck can cost up to $8,640 installed, while a 16×16 deck can cost as much as $11,520.
  • Complexity: Multi-level decks, custom features like built-in seating or fire pits, and the addition of railings, stairs, and lighting can increase the total cost.
  • Labor: In Montgomery County, labor costs range from $2 to $5 per square foot, with complex projects or custom designs requiring higher labor fees.

Trex Decking Cost in Montgomery County

Trex is one of the most popular brands for composite decking. Here’s a quick breakdown of the cost for various Trex product lines:

  • Trex Enhance: Starts at $8 per square foot for materials.
  • Trex Select: Around $10 per square foot.
  • Trex Transcend: Premium option, starting at $12–$16 per square foot.

When factoring in installation, the total cost for Trex decking typically ranges from $25 to $45 per square foot. You can also use Trex’s cost calculator to get a personalized estimate based on your project details.

TimberTech Decking Cost in Montgomery County

TimberTech offers another premium option for composite decking. The pricing for TimberTech’s collections typically ranges from:

  • TimberTech EDGE: Starts at $8–$10 per square foot.
  • TimberTech PRO: Around $12 per square foot.
  • TimberTech AZEK: Premium products range from $14–$16 per square foot.

When you include labor and other materials like railings, the installed cost for TimberTech decking typically falls between $25 and $45 per square foot.

Cost of Composite Decking by Deck Size

A raised composite deck with a set of stairs, featuring dark railings and support posts on a gravel surface. The deck is attached to a house, with chairs visible on the deck.

The size of your deck has a significant impact on the overall cost. Here’s an estimate for the total price based on the average cost of composite decking per square foot, which ranges from $8 to $16 for materials and $25 to $45 installed:

Deck Size Material Cost Installed Cost
12×12 (144 sq ft) $1,152–$2,304 $3,600–$6,480
12×16 (192 sq ft) $1,536–$3,072 $4,800–$8,640
16×16 (256 sq ft) $2,048–$4,096 $6,400–$11,520

Adding custom features like lighting, multi-level designs, or built-in seating could increase costs by $500 to $2,000 or more. Our BTN experts also discuss PVC vs composite decking, in case you’re confused.

Additional Costs to Consider

When budgeting for your deck installation, don’t forget to factor in other potential costs:

  • Permits and Fees: You may need a permit to build a deck, depending on local regulations. The cost of permits can vary based on your location and the size of your deck.
  • Sales Taxes: Both material and labor costs are subject to sales tax, which will be added to your final price.
  • Contractor Fees: If you hire a general contractor, you can expect additional fees ranging from $226 to $283. These fees are typically added to the total cost of the project.

Tip: Combine local cost estimates with our budgeting for multi-level decks guide when planning complex builds.”

Money-Saving Tips for Installing Composite Decking

Here are a few ways to save money while still getting a durable and stylish composite deck:

  • Buy Off-Season: Decking materials often cost less in the winter months when demand is lower.
  • Use Entry-Level Products: Opt for Trex Enhance or TimberTech EDGE for a more affordable yet durable option.
  • Choose Simple Layouts: A simple rectangular or square layout is cheaper to install than complex, multi-level designs.

Recommended Brands for Every Budget

  • Budget: Trex Enhance, Veranda
  • Mid-range: Fiberon Good Life, TimberTech EDGE
  • Premium: TimberTech AZEK, Trex Transcend

Frequently Asked Questions

How long does a composite deck last compared to wood?

Composite decks generally last 25 to 50 years, depending on the brand and quality of materials used. In comparison, wood decks typically last 10 to 15 years but require regular maintenance, including staining and sealing, to preserve their appearance and prevent decay.

Can I install composite decking myself, or should I hire a professional?

Installing composite decking can be a DIY project, but it requires the right tools, skills, and knowledge of local building codes. If you lack experience with decking projects or the installation seems complex, hiring a professional is recommended to ensure a safe and high-quality result.

Are composite decks more expensive than wood decks?

Yes, composite decks tend to be more expensive than wood decks upfront. The material cost for composite decking ranges from $8 to $16 per square foot, while wood decking typically costs between $3 to $35 per square foot. However, composite decking requires less maintenance and has a longer lifespan, potentially saving you money in the long run.

What is the best composite decking material for high-traffic areas?

For high-traffic areas, it’s best to choose premium composite decking options like Trex Transcend or TimberTech AZEK, as they offer superior durability and resistance to wear and tear. These materials are designed to withstand heavy foot traffic without fading, scratching, or staining easily.

Do I need a permit to build a composite deck in Montgomery County?

Yes, you do, depending on the size and complexity of the project. Permits ensure that the deck is built according to local safety codes. Check with your local government or a deck professional to confirm if a permit is required for your project.

Now You Have Everything You Need to Budget for Your Dream Deck

You now have all the details to plan for your new composite deck. With clear pricing, material options, and installation insights, you’re ready to take the next step. Whether you’re finalizing your budget or reaching out for an estimate, you’re on your way to getting the deck you want. Let’s get started!

Ready to take the next step? Request a free estimate or call us to get a personalized quote based on your project details.

ABOUT THE AUTHOR

At Back To Nature Decks, our passionate team blends decades of craftsmanship with modern design, creating custom outdoor spaces that reflect your lifestyle and vision.​ 

 

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