Decks by Northwest

5.0
(57)
Deck buildersSeattle, WA
Decks by Northwest deck builders in Seattle, WA - photo 1
Decks by Northwest is a licensed and insured deck builder serving Seattle, Bellevue, Tacoma, and the surrounding Washington area. The company specializes in custom composite and cedar decks built for Pacific Northwest weather, along with covered outdoor living spaces and full deck replacements. As certified installers for Trex, TimberTech, and AZEK, the team focuses on premium materials, engineered structural builds, and clean craftsmanship. The crew also handles permits and code requirements, guiding homeowners through the process from free consultation to final walkthrough.
Licensed and insuredComposite and cedar specialistsBuilt for Washington weatherTrex certified installerTimberTech certified installerAZEK certified installerFree consultation and estimatePermits and code handledCovered outdoor living spacesDeck replacement specialists

Services

Composite decks

Composite decks

Cedar decks

Cedar decks

Covered outdoor living

Covered outdoor living

Deck replacement

Deck replacement

Deck design

Deck design

Why choose us?

Licensed and insured

Decks by Northwest is a licensed and insured deck builder, so every project is handled professionally and to Washington code requirements.

Composite and cedar specialists

The team specializes in both low-maintenance composite decking and natural cedar, helping you choose the right material for your home and budget.

Built for Washington weather

Decks are designed for the Pacific Northwest climate, with attention to moisture, rain, drainage, and long-term durability.

Certified premium installers

As certified installers for Trex, TimberTech, and AZEK, the team builds with premium decking and aluminum railing systems.

Permits handled for you

The crew brings permit and code knowledge to every job and guides homeowners through the local permitting process.

Free consultation and estimate

Every project starts with a free consultation and estimate to discuss your goals, layout, materials, and budget.

Location & hours

2003 SE Maple Valley Hwy Ste. 209, Renton, WA 98057

FAQs

What areas do you serve?
Decks by Northwest serves Seattle, Bellevue, Tacoma, and the surrounding Washington area.
What types of decks do you build?
The team specializes in composite and cedar decks, covered outdoor living spaces, and full deck replacements, all designed for Pacific Northwest homes.
Do I need permits for a deck project?
Most deck construction and replacement projects in Washington require permits, especially for elevated or structural builds. The team helps guide homeowners through the permitting process and ensures projects are built to local code.
How much does a new deck cost in Washington?
Deck pricing depends on the size, materials, layout, and features of the project. Composite decks, covered outdoor spaces, custom railings, lighting, and multi-level designs can all affect the investment. Personalized estimates are provided based on your home, goals, and budget.
How long does a deck project usually take?
Most deck projects take anywhere from a few days to several weeks depending on the size, complexity, weather conditions, and permitting requirements. Clear timelines are provided upfront and homeowners are kept informed throughout.
Which is better for Washington weather, composite or cedar?
Both are excellent options that serve different needs. Composite decking is low-maintenance, highly durable, and performs well in the Pacific Northwest climate, while cedar offers a natural wood appearance and timeless warmth but requires more ongoing maintenance.
Are you licensed and insured?
Yes. Decks by Northwest is a licensed and insured deck builder, and projects are built to local code requirements.

Contact Decks by Northwest

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