Premium Deck Design & Construction across Greater Seattle
Why Homeowners Choose SiA Builds
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Permits Handled
We pull all required city permits in Kirkland, Bellevue, Redmond, and Seattle.
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No Subcontractors
Your deck is built by our own crew, start to finish.
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10-Year Warranty
We stand behind every board, post, and railing we install.
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Licensed & Insured
Fully licensed contractor in Washington State. Your property is protected.
Deck Building
Your backyard should work as hard as you do. Whether you're envisioning a ground-level patio deck, a multi-level composite structure, or a custom wood build with built-in seating — we design it around your home, your lot, and your budget.
As a licensed deck contractor serving Greater Seattle, SiA Builds handles the entire process: design, city permits, material selection, and construction. No subcontractors. No surprises.
What We Build
Every project is custom. Here's what our deck building company handles most often:
- Custom Wood Decks
- Composite Deck Installation
- Multi-Level Deck Designs
- Pool and Patio Decks
- Wraparound and Attached Decks
- Decks with Built-In Seating & Lighting
- New Deck Construction with Full Permit Package
Wood or Composite — Which Is Right for You?
Not sure which material fits your home and climate? In the Pacific Northwest, moisture matters. Here's the honest breakdown:
Wood decks — classic look, lower upfront cost, require regular sealing and maintenance in our rainy climate.
Composite decks — higher initial investment, significantly lower maintenance, better resistance to moisture, mold, and Pacific Northwest weather long-term.
We'll walk you through both options on-site and help you decide based on your budget and how you plan to use the space.
Do I Need a Permit to Build a Deck in Seattle?
In most cases, yes. New deck construction in Kirkland, Bellevue, Redmond, and Seattle requires a building permit — especially for attached structures, elevated decks, or anything over 200 square feet.
The good news: we handle all permit applications for you. Our team knows local code requirements inside out, which means fewer delays and no surprises at inspection.
Ready to See What's Possible?
discuss your ideas, and send you a clear written quote within 24 hours.
Our Deck Building Process
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Free On-Site Estimate
We visit your property, assess the site, and discuss your goals. No pressure, no obligation. - 2
Custom Design & 3D Preview
We create a custom layout for your space. For larger projects, we provide 3D visualizations before anything is built. - 3
Permits & Approval
We handle all city permit applications and communicate with the building department on your behalf. - 4
Material Selection
We help you choose the right decking — wood, composite, or PVC — based on your budget and maintenance preferences. - 5
Construction
Our own crew builds your deck efficiently, cleanly, and with full attention to structural detail. - 6
Final Walkthrough
We walk through the finished deck with you and make sure everything matches the plan.
Common Questions About Deck Building
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How much does it cost to build a deck in the Seattle area?
Deck costs vary based on size, materials, and complexity. A basic pressure-treated wood deck typically starts around $8,000–$12,000. Composite decks run $15,000–$30,000+ depending on square footage and features. We provide a free itemized estimate with no obligation. -
How long does deck construction take?
Most residential deck builds take 3–7 days for construction, plus permitting time. We'll give you a clear timeline before we start. -
Do you build decks year-round?
We build through most of the year. Spring through early fall is peak season and books fast — we recommend scheduling your estimate early.
Let's Build Something Worth Coming Home To! ✨
Our works
SiA Builds
Schedule a consultation(425) 560 62 99
Dreaming of a beautiful and functional outdoor space that will be your pride? We're ready to help you make it happen! Contact us or fill out our contact form to schedule a consultation. During the meeting, we will assess your site, discuss your desires, and suggest the best solutions. We look forward to working with you and creating the perfect space for your home.
