How Much Does Deck Repair or Replacement Cost in Seattle, Washington? [2025 Data]

The average deck repair cost in Seattle is $3,248, but depending on the type of repairs needed, you could pay between $1,276 and $5,231. Your final cost will also depend on the decking material, the size of the repair area, and your contractor’s rates. Here’s how to estimate your Seattle deck repair costs based on these factors.

Deck Repair Cost Factors 

From deck size to decking material, here are the main variables that determine how much it costs to fix a deck in Seattle, WA.

Deck Size

Larger decks carry higher material costs and greater labor costs. To get an idea of repair costs, you can inspect your deck and measure the problem areas. The materials for deck repair cost between $3 and $45 per square foot, with the type of decking also influencing the cost. 

Size also impacts the cost of rebuilding a deck from scratch. In Seattle, the average cost to build a new deck ranges between $6,584 and $26,336, or $44 to $88 per square foot. 

Materials

The cost of replacing broken boards depends on the deck materials and the best wood for your deck. Different deck board materials also have varying life spans, so you’ll need to replace certain types more often than others.

Deck Repair Cost by Type 

If your deck just needs a repair or two, the cost depends on the issue. Minor cosmetic fixes will cost much less than major structural repairs. Here are some common decking issues that you may encounter when evaluating your deck for repairs.

Railing Replacement

In Seattle, replacing your deck railing costs $51 to $307 per linear foot. Railings are essential safety features for raised decks, and they’re also nice to have on ground-level or floating decks to prevent accidents. Your final cost depends on the material you choose for the railing. 

Demolition

Demolishing an old deck costs $5 to $15 per square foot. This includes removing the old materials and the demolition itself. However, disposing of the materials yourself can cut costs.  

Sealing and Staining

The average cost to stain a deck professionally in Seattle is between $805 and $1,829. Whether hiring out or DIYing, always follow up with a clear sealant for added protection. Be sure to stain and reseal your deck every two to three years.

When to Repair vs. Replace Your Deck

While it’s a great idea to repair rather than replace a deck when possible, there are some instances when it’s better to start fresh. Unfortunately, if your deck is in poor shape, your best option is to tear it down and rebuild. Here are some key signs that it’s time to budget for deck replacement costs.

Deck Repair Pro Costs

Every deck repair job is different, so depending on the specifics of your project, you might also face a few additional expenses.

Licensing

If you’re a DIYer, you can fix your own deck—as long as it’s structurally sound and only requires minor repairs. However, if there’s extensive damage or you need to replace multiple parts, you’re better off hiring a qualified deck professional. Any pro who works on your deck should be insured, bonded, and registered as a construction contractor with the Washington Department of Labor & Industries (L&I).

Permits

In Seattle, permits aren’t required for simple repair jobs, like replacing popped nails or scrubbing mildew from your deck. In other cases, though, you will need a permit for your project—particularly if you’re modifying your deck’s structure or building a new deck. 

Before hiring a deck contractor in Seattle, make sure you’re clear about the permit requirements for your job and who’s responsible for pulling them.

Sales Tax

Seattle’s 10.35% sales tax rate is one of the steepest in the country. It’s worth keeping in mind as you budget for deck repairs, since it can add to your overall costs. For example, if your contractor buys $1,200 worth of supplies for your project, the sales tax would come out to $124.

Does Deck Repair Increase Home Value?

Recent data from the Journal of Light Construction (JLC) highlights the value of building a deck in the Emerald City. According to the JLC Cost Versus Value Report, Seattle homeowners recoup 83.1% of their costs after adding a wood deck to their property. With composite decks, it’s 79.6%. 

Plus, decks are desirable in Seattle, allowing you to soak up the pleasant Pacific Northwest summer weather from your own backyard or roof. And if you decide to sell your house, a well-maintained deck can be a standout feature in the eyes of buyers.

How Angi Gets Its Cost Data

Home is the most important place on earth, which is why Angi has helped more than 150 million homeowners transform their houses into homes they adore. To help homeowners with their next project, Angi provides readers with the most accurate cost data and upholds strict editorial standards. We survey real Angi customers about their project costs to develop the pricing data you see, so you can make the best decisions for you and your home. We pair this data with research from reputable sources, including the U.S. Bureau of Labor Statistics, academic journals, market studies, and interviews with industry experts—all to ensure our prices reflect real-world projects. 

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