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Composite vs Wood Decking Costs: A Clear Cost Comparison for Seattle-Area Homeowners

Writer: Ryan Tichy
Ryan Tichy
Aug 28
4 min read

When it comes to upgrading your outdoor living space, choosing the right decking material is a crucial decision. In the Seattle area, including Kirkland, Bellevue, Bothell, and Redmond, homeowners often weigh the benefits of composite decking against traditional wood decking. One of the most important factors in this decision is cost. Today, I want to break down the composite vs wood decking costs so you can make an informed choice that fits your budget and lifestyle.


Understanding Composite vs Wood Decking Costs


Decking costs can vary widely depending on the materials, labor, and maintenance involved. Let’s start by looking at the upfront expenses and long-term costs for both composite and wood decking.


Upfront Material Costs


  • Wood Decking: Typically, wood decking materials like cedar or redwood cost between $15 and $25 per square foot. Pressure-treated pine is a more budget-friendly option, usually around $10 to $15 per square foot. These prices reflect the raw materials only and do not include installation.

  • Composite Decking: Composite decking materials generally range from $30 to $45 per square foot. This higher price reflects the durability, low maintenance, and resistance to weathering that composite boards offer.


Installation Costs


Installation costs for both types of decking are fairly similar, usually between $8 and $15 per square foot depending on the complexity of the design and local labor rates. In the Seattle area, labor costs tend to be on the higher end due to demand and living costs.


Maintenance and Longevity


  • Wood Decking: Wood requires regular maintenance such as staining, sealing, and occasional repairs. Over 10 years, maintenance can add up to $5 to $10 per square foot annually.

  • Composite Decking: Composite decks require minimal maintenance—usually just occasional cleaning. This can save you hundreds or even thousands of dollars over the life of the deck.


Eye-level view of a newly installed composite deck in a backyard
Eye-level view of a newly installed composite deck in a backyard

Composite decking offers a sleek, low-maintenance option for Seattle homes.


How much does it cost for a 12x12 composite deck?


If you’re considering a 12x12 composite deck, here’s a practical breakdown of what you might expect to pay in the Seattle area:


  • Material Cost: For a 144 square foot deck, composite materials alone can range from $4,320 to $6,480.

  • Installation Cost: Labor for this size deck typically runs between $1,150 and $2,160.

  • Total Estimated Cost: Expect to pay between $5,470 and $8,640 for a fully installed 12x12 composite deck.


This estimate includes basic installation without additional features like railings, stairs, or lighting, which can increase the price.


Close-up view of wood decking boards showing natural grain and texture
Close-up view of wood decking boards showing natural grain and texture

Wood decking provides a classic look but requires ongoing upkeep.


Comparing Durability and Long-Term Value


When comparing composite vs wood decking costs, it’s important to consider not just the initial price but the long-term value.


Wood Decking Pros and Cons


  • Pros:

- Lower initial cost for materials.

- Natural beauty and warmth.

- Easy to customize with paint or stain.

  • Cons:

- Requires regular maintenance to prevent rot, warping, and insect damage.

- Lifespan typically 10-15 years with proper care.

- Can splinter or crack over time.


Composite Decking Pros and Cons


  • Pros:

- Resistant to rot, insects, and fading.

- Minimal maintenance required.

- Lifespan of 25 years or more.

  • Cons:

- Higher upfront cost.

- Can get hot in direct sunlight.

- Limited color options compared to wood.


Real Value for Seattle Homeowners


Given the wet climate in the Seattle area, composite decking’s resistance to moisture and mold is a significant advantage. While wood decks may seem more affordable initially, the ongoing maintenance and shorter lifespan can make them more expensive over time.


For homeowners in Kirkland, Bellevue, Bothell, and surrounding communities, investing in composite decking often means fewer headaches and better long-term protection for your outdoor space.


Practical Tips for Budgeting Your Deck Project


To help you plan your deck project with confidence, here are some actionable recommendations:


  1. Get Multiple Quotes: Always request detailed estimates from local contractors to understand labor and material costs specific to your area.

  2. Consider Hidden Costs: Don’t forget to budget for permits, design fees, and any additional features like railings or built-in seating.

  3. Plan for Maintenance: Factor in the cost and time for upkeep, especially if you choose wood decking.

  4. Think Long-Term: A higher upfront investment in composite decking can pay off with lower maintenance and longer lifespan.

  5. Choose Quality Materials: Whether wood or composite, selecting high-quality materials ensures better durability and appearance.


Making the Right Choice for Your Home


Choosing between composite and wood decking is a personal decision that depends on your budget, style preferences, and how much time you want to spend on maintenance. If you want a natural look and don’t mind regular upkeep, wood decking can be a beautiful and cost-effective option. However, if you prefer a low-maintenance, durable deck that stands up to Seattle’s rainy climate, composite decking is worth the investment.


For those still weighing options, I recommend reviewing the composite decking vs wood cost comparison to get a clearer picture of what fits your budget and lifestyle.


Whatever you decide, investing in quality workmanship and materials will ensure your deck remains a welcoming outdoor space for years to come.



If you’re ready to explore decking options or want a detailed estimate for your home in Kirkland, Bellevue, Bothell, or nearby Seattle communities, don’t hesitate to reach out. We’re here to help you create a beautiful, durable deck that adds value and enjoyment to your home.

 
 

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