📍 Kirkland, WA — Serving Seattle & the Eastside
🕐 Mon–Fri 8am–6pm
Composite deck with lake view - Eastside Seattle

Custom Deck Building in Seattle, Bellevue & the Eastside

Build the outdoor living space you've always wanted. Composite, cedar, and hardwood decks. We handle design, permits, and construction.

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Build Your Dream Deck

A well-built deck extends your living space, increases home value, and gives you the perfect outdoor entertainment area. Roof4Life designs and builds custom decks tailored to your home and lifestyle.

  • Custom design for your home and property
  • All permits pulled and inspections handled
  • Composite (Trex, TimberTech), cedar, and hardwood
  • Multi-level, wraparound, and elevated deck expertise
  • Built-in seating, planters, lighting, pergolas
  • Complete with railing, stairs, and finishing
Get Free Estimate →
Custom cedar deck with curved railing

Deck Material Options

Composite (Trex & TimberTech)

Most popular Eastside choice. Zero staining or sealing. 25-year warranties standard.

Cedar

Naturally rot and insect resistant. Weathers to beautiful silver-gray. Requires periodic sealing.

Exotic Hardwood (Ipe, Tigerwood)

Incredibly dense, naturally weather-resistant, lasts 40+ years. Popular for premium homes in Medina and Mercer Island.

Composite deck boards detail

Deck Building Cost in Seattle (2025–2026)

Material200 sq ft400 sq ft600+ sq ft
Composite$12,000–$18,000$20,000–$32,000$30,000–$50,000+
Cedar$10,000–$15,000$17,000–$28,000$25,000–$42,000
Exotic Hardwood$18,000–$25,000$30,000–$45,000$45,000–$70,000+

*Prices vary. Get a free estimate. Financing available.

Deck Building Questions

How much does a deck cost in Seattle?
$15,000-$50,000+ depending on size, material, and complexity. A 400 sq ft composite deck runs $20,000-$32,000 including design, permits, and construction.
Do I need a permit?
Yes. Any deck over 30 inches above grade requires a permit in King County. We handle all permitting.
Best decking for Seattle weather?
Composite (Trex/TimberTech) is best overall. No rot, no sealing, no maintenance. Cedar is great if you prefer natural wood.
How long to build a deck?
2-4 weeks from permit approval. Permitting takes 2-6 weeks depending on city.

Ready to Build Your Deck?

Custom design, permits included. Free estimates.

Book Free Estimate →
📞 (425) 207-3500