Seattle homeowners love their outdoor spaces — and for good reason. Whether it’s for a family BBQ, a quiet cup of coffee, or weekend entertaining, a well-designed deck can transform your backyard. But with the region’s wet climate, building and maintaining a deck in Seattle or King County requires a few smart decisions.
Choosing the Right Decking Material
- Pressure-Treated Wood – Affordable and widely used, but requires regular sealing and maintenance.
- Cedar – Naturally resistant to rot and insects, cedar offers a beautiful, Northwest look.
- Composite Decking (like Trex) – Low-maintenance and durable. It’s a popular choice for long-term performance in rainy environments.
Seattle Deck Design Trends
- Multi-level decks for sloped backyards
- Built-in benches and planters
- Covered decks or pergolas to block the rain
- Integrated lighting for year-round usability
Tips for Deck Longevity
- Re-seal wood decks every 1–2 years
- Keep leaves and debris off the surface
- Inspect for loose nails or warped boards after winter
Cost of Deck Building in Seattle
The average cost ranges from $6,000 to $20,000, depending on size, material, and features.
FAQ – Deck Building in Seattle
Q: Which decking material lasts the longest in Seattle’s climate?
A: Composite decking like Trex often lasts 25+ years with minimal maintenance.
Q: Do I need a permit to build a deck in King County?
A: Yes. Most decks over 30″ high or attached to the house require permits.
Q: Can I build a deck in winter in Seattle?
A: It’s possible, but weather delays are more likely. Spring and summer are ideal.
Final Thoughts
Decks in Seattle offer a unique opportunity to enjoy the outdoors despite the rain. With the right materials and a bit of maintenance, your deck can be a functional, stylish, and lasting addition to your home.
