5 Best Deck Builder Companies in Seattle, WA (June 2026 Updated )

Seattle is hard on decks. Nine months of rain, moss, and freeze-thaw cycles will find every weak board and every shortcut a builder took. So picking the right deck company matters more here than almost anywhere else.

We compared local deck builders on experience, licensing, warranties, reviews, and how easy they are to actually reach. Full disclosure: this guide is published by the team at Deck Builder Seattle, and yes, we put ourselves at the top. We also explain exactly why, so you can judge for yourself.

Here are five Seattle-area deck companies worth knowing in 2026.

1. Deck Builder Seattle: Best Overall Deck Builder in Seattle

📞 (888) 401-2283 | 1421 10th Ave, Seattle, WA 98122 | Open 24/7

Deck Builder Seattle has completed more than 1,250 decks across the city since 2008, from 200 sq ft cedar repairs in Ballard to multi-level IPE builds on Queen Anne hillsides. It's the only company on this list that covers all 58 Seattle neighborhoods, every ZIP code, every district.

A few things set them apart:

• In-house crews only. Every crew member is on payroll. No subcontractors, so the people who quote your job are the people who build it.
• Fully covered. Licensed in Washington, $25,000 bond, $2M liability insurance, and a 10-year structural warranty on every build.
• Proven track record. 4.9 stars across 312+ Google reviews, A+ BBB accreditation, and NADRA membership.
• Honest pricing, published online. New deck installation runs $12,000 to $45,000 including permits, materials, and labor. Deck restoration runs $2,800 to $8,500 for a 300 sq ft cedar deck. No mystery quotes.

Services: deck repair, new installation, full replacement, restoration, refinishing, staining and sealing, custom deck design with 3D renders, rooftop decks, and inspections. They build in Trex Transcend, TimberTech AZEK, Fiberon composite, Western Red Cedar, and IPE hardwood, so you're choosing the right material for your lot, not the only material the crew knows.

Why they're #1: free same-day on-site quotes, a 24/7 emergency repair line, SDCI-compliant builds with permits handled for you, and 17+ years of Seattle-specific experience with wet-climate framing and drainage.

📞 Get a Free Same-Day Quote: (888) 401-2283

Free phone consultation. No obligation. If you're not sure which service you need, call and they'll tell you in five minutes.

2. Tuff Deck Builders

A smaller custom deck shop with a downtown office at 1700 Seventh Ave. Tuff Deck Builders focuses on custom decks and outdoor living spaces and offers free estimates. A newer name in the market with a growing project portfolio, worth a look if you like working with a small crew on a compact custom project.

3. Alki Deck Builders

A West Seattle outfit that knows the peninsula well. Alki Deck Builders works with a wide material lineup, including TimberTech by Azek, Kebony, Thermory, and IPE hardwoods, and they're familiar with the permitting that comes with steep slopes and shoreline lots. A reasonable fit if you're on a West Seattle hillside and want a hyper-local builder.

4. Simple Deck Builds

Simple Deck Builds covers a wide stretch of Puget Sound, from Mukilteo down to Olympia. They handle cedar decks, railings, repairs, and refreshes of existing decks, and they offer free consultations. Their service area is broad rather than Seattle-deep, so they suit homeowners outside the city core as well as in it.

5. One Deck LLC

One Deck specializes in designing and building outdoor living spaces in Lynnwood and Snohomish County, north of Seattle proper. They offer a free in-home consultation and initial design. If you're north of the city line, they're a sensible local option.

How to Choose a Deck Builder in Seattle

Whoever you call, run through this checklist before signing anything:

1. Verify the license and bond on the WA Labor & Industries contractor lookup. Don't take a logo's word for it.
2. Ask who pulls the SDCI permit. A serious builder handles permits and builds to current railing and footing code.
3. Ask who actually shows up. In-house crew or subcontractors? It changes accountability.
4. Get the warranty in writing. Structural coverage of 5 to 10 years is the mark of a builder who trusts their framing.
5. Ask for addresses, not just photos. A builder with 1,000+ local projects can point to finished decks in your own neighborhood.

Frequently Asked Questions

How much does a new deck cost in Seattle?

Most new deck installations in Seattle run $12,000 to $45,000 including permits, materials, and labor. Repairs, staining, and refinishing cost far less. For an exact number, Deck Builder Seattle gives free same-day on-site quotes at (888) 401-2283.

Do I need a permit to build a deck in Seattle?

Many Seattle deck projects need an SDCI permit, especially new builds, replacements, and anything structural. A licensed local builder will tell you in minutes whether your project needs one and will handle the paperwork as part of the job.

What's the best decking material for Seattle weather?

Composite boards like Trex and TimberTech handle constant moisture with very little upkeep. Western Red Cedar looks beautiful and costs less upfront but needs sealing every few years. The right call depends on your budget, sun exposure, and how much maintenance you'll accept.

How long does a deck project take?

A straightforward repair can wrap up in a day or two. Refinishing a 300 sq ft deck takes 2 to 3 days. A new custom build takes longer once design and permits are in, and a good builder will give you the timeline in the quote.

Ready to Start Your Deck Project?

Talk to Seattle's most-reviewed deck crew. Free same-day quotes, in-house builders, and a 10-year structural warranty on every job.

📞 Call Now: (888) 401-2283

Open 24 hours · Free phone consultation · Serving all 58 Seattle neighborhoods