Deck Building
Custom decks designed and built from concept to completion — wood or composite.
ExploreMercer Island, WA Deck builders
Island decks built for the view — and the trees
From the North End to the Lakes, we design and build decks that make the most of Mercer Island’s views and slopes while respecting its tree and shoreline rules.
5.0
★★★★★
29+ reviews
5.0
★★★★★
31+ reviews
10 years
Workmanship warranty
12 years
Building in Seattle
300+
Decks Built & Restored
We know these lots
Decks built for Island slopes and lake views
Mercer Island lots come with steep drops toward the water, mature trees you can’t touch, and shoreline rules that trip up outside contractors.
We’ve built across the Eastside for over a decade, so we design around your view, your slope and the Island’s tree code from day one.
- Experienced with steep, view and waterfront lots
- Familiar with Island tree & shoreline rules
- Crews based minutes away in Redmond
What we build
Decks are all we do — so we do them right
Every service, laid out plainly. No slider, no guessing what we handle.
Deck Restoration & Refinishing
Custom decks designed and built from concept to completion — wood or composite.
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Pergolas & Patio Covers
Custom decks designed and built from concept to completion — wood or composite.
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Deck Railings & Stairs
Custom decks designed and built from concept to completion — wood or composite.
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Deck Sealing & Waterproofing
Custom decks designed and built from concept to completion — wood or composite.
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Free 3D visualization
See your dream deck before we build it
Every full deck build includes a professional 3D visualization — so you know exactly what you're getting before construction begins
Included with every deck we build
Schedule Your Free Estimate
Our works
Recent decks, built across Seattle
A look at the spaces we've designed, rebuilt and refinished.
Permits, handled
We speak fluent Mercer Island permitting
Most Island decks need a permit, and shoreline and critical-area lots need extra care. We handle the whole thing — drawings, submittal and inspections — so your deck is legal and won’t haunt you at resale.
- Permit drawings prepared and filed for you
- Built to current Island & WA code
- Setback & critical-area aware near the water
- Inspection-ready the first time
Explore our projects
Recent decks near Mercer Island
Go behind the finish. We open up one complete Seattle project—drawings, materials, quality checks, and the hidden work most builders never show you.
Two decks, rebuilt from the footings up
Bellevue, WA
Two elevated decks on a sloped lot, taken down to the footings and rebuilt — new pressure-treated frames, composite tops, and railings brought back to life, all within the original footprint.
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A small deck, rebuilt bigger — then a patio to match
Redmond, WA
A cramped 8×10 deck torn down and reimagined as a larger 12×14 — new frame, composite decking and railings, and a composite privacy screen for a corner that finally feels private. Six months later, they brought us back for a 1,000 sq ft tile patio.
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Real reviews, real clients
All reviews
5.0
What clients consistently say
Across 50+ reviews, homeowners highlight precise craftsmanship, on-time crews that clean up daily, honest pricing with no surprises, and decks that feel solid and safe — even on complex, multi-level builds.
James Blair
Magnolia, Seattle May 2026
Craft Boys rebuilt our two-tier deck on a sloped backyard that three other contractors refused to touch. Engineered drawings, permits, hidden fasteners — everything done right, on schedule, and the crew cleaned up every single evening.
Rachel Kim
Bellevue April 2026
We got quotes from five companies and Craft Boys was the only one that explained WHY the old deck failed. New composite deck with cable railings is stunning, and the price matched the written estimate to the dollar.
Michael Torres
Kirkland March 2026
Our 20-year-old cedar deck looked done for. They restored it — sanded, re-stained, replaced the bad boards — for a third of what a rebuild would cost. Honest advice instead of an upsell. Rare these days.
Elena Petrov
Sammamish February 2026
Pergola + deck extension finished ahead of schedule despite the February rain. The crew tarped everything daily and the site was spotless. The 3D visualization beforehand made every decision easy.
David Chen
Mercer Island January 2026
Second project with Craft Boys — deck repair after a winter leak, then full waterproofing with an under-deck drainage system. Their 10-year warranty is real: they came back for the free follow-up inspection unprompted.
Sarah Mitchell
Redmond May 2026
Found them on Thumbtack, best decision of our remodel. They replaced rotten joists other companies missed and finished the new decking so cleanly you can't find a visible screw. Communication was instant.
To guarantee the highest quality, we accept only 3 projects per month.
Availability right now:
July
August
September
Book your free estimate
Pick a day and time that works — we'll confirm within 2 hours.
Financing available
Your dream deck, on a plan that fits your budget.
We've partnered with GreenSky® — one of the most trusted names in home-improvement lending — so qualified homeowners can finance their project with simple, flexible monthly payments.
No need to drain your savings or put off the build. Apply in minutes, get a fast decision, and start sooner.
Check Your Financing Options
Where we build on Mercer Island
Neighborhoods we serve
We build decks across all of Mercer Island, including:
North EndEast SeattleMercerwoodShorewoodThe LakesIsland CrestFaben PointFirst Hill
Nearby areas we also serve
Mercer Island questions
Building a deck on Mercer Island, answered
The questions Seattle homeowners ask us most — answered the way we answer them on site.
Most do, and shoreline or critical-area lots need extra review. We handle the whole permit process — drawings, submittal and inspections — as part of the job.
Yes — we design around protected trees and the Island’s tree code, and prepare any documentation the city needs.
Steep and view lots are our specialty. We engineer posts, footings and bracing to code so the deck is safe and solid even on a big drop toward the water.
Usually within the same week — our crews are minutes away in Redmond, so site visits and callbacks are fast.
Yes — Washington contractor Lic. #HOMERRA771N2, Google Guaranteed, with full liability and workers’ comp coverage on every site.
Only 3 projects a month
Get your free Mercer Island deck estimate
Tell us about your yard — we’ll confirm a visit within 2 hours. No obligation, no pressure.
Free safety checklist
Why we made this guide: so you don't pay twice
We've seen it too many times—homeowners hire the cheapest contractor, then call us a year later to rebuild what should've been done right the first time. So we wrote down everything we know.