Custom Deck Construction in West Seattle, WA

Create the outdoor space you’ve always wanted with Petra Decks, your trusted partner for custom deck construction in West Seattle. Whether your view overlooks Puget Sound or you’re tucked into a quiet residential street, we design and build decks that blend beauty, durability, and lifestyle. 

Composite TimberTech Azek decking used in West Seattle.

Why Choose Petra Decks for Your West Seattle Deck?

We bring decades of framing and carpentry experience to every project—combined with a local understanding of Seattle’s unique weather, terrain, and coastal exposure.

Built for Northwest Conditions

Our decks are designed to handle rain, salt air, and shifting temperatures—so they stay strong and beautiful year after year.

Stylish & Functional Outdoor Living

From wraparound entertaining decks to private retreats, we help homeowners craft outdoor spaces that reflect their goals and complement their homes.

Quality Materials & Lasting Craftsmanship

We build using high-end composite materials and premium wood options like cedar and hardwood—engineered to resist rot, insects, and warping.

Explore Composite, PVC & Wood Decks — Custom-Built for Your Home

Our Deck Building Services in West Seattle

We offer full-service deck design and construction tailored to your property’s needs and challenges.

Design & Planning

  • In-home consultation and layout planning

  • Custom 3D renderings and permit assistance

  • HOA-compliant designs

Construction Options

  • Composite decking (Trex, TimberTech, Azek, Fiberon, Eva-Last)

  • Cedar and exotic hardwoods

  • Multi-level, rooftop, or sloped-yard solutions

Upgrades & Custom Features

  • Built-in seating, lighting, and planters

  • Glass or cable railings for views

  • Under-deck waterproofing systems

  • Shade structures and privacy screens

Seattle Deck Permits & Compliance

Navigating Seattle's permitting process is crucial. Most decks over 18 inches above ground require a permit. We assist with:​

  • Understanding lot coverage limits and setback requirements​

  • Ensuring compliance with Seattle Municipal Code​

  • Managing permits for decks in environmentally critical areas

Decking Brands Highlights

Azek PVC Decking

  • Why Choose It: Made from 100% PVC, Azek is a premium option with superior resistance to moisture, mold, and fading. It’s perfect for rainy or sunny areas in the Pacific Northwest.

  • Best For: Luxury decks, rooftop decks, and homes with high exposure to moisture or direct sunlight.

TimberTech Composite

  • Why Choose It: Offers the rich look of natural wood with a capped composite core for extra durability. It’s ideal for homeowners who want aesthetics and performance.

  • Best For: Custom outdoor living spaces where looks and longevity both matter.

Trex Decking

  • Why Choose It: Trex is a budget-friendly favorite that combines sustainability and low maintenance. It’s a reliable, accessible option for families and first-time deck owners.

  • Best For: Cost-effective projects with good performance and eco-friendly appeal.

Eva-Last Composite

  • Why Choose It: This innovative bamboo-composite decking is sleek, stylish, and naturally resistant to moisture and UV. It offers an exotic look with minimal upkeep.

  • Best For: Contemporary homes, shaded or damp backyards, and modern design lovers.

Fiberon Decking

  • Why Choose It: Fiberon is known for offering reliable performance at various price points. Whether you’re upgrading a basic deck or building a premium outdoor space, Fiberon has an option.

  • Best For: Versatility and value-driven projects across all home styles.