Trusted Custom Deck Builder Serving King County, WA-Petra Decks

For over 25 years, Petra Decks LLC has been turning backyards throughout King County into stunning, durable outdoor living spaces. As a locally owned, family-run business, we take pride in delivering expert craftsmanship, premium materials, and personalized service rooted in our strong Pacific Northwest heritage.

We specialize in custom deck construction, porches, patios, and advanced waterproofing systems—each designed to withstand the region’s weather while enhancing your lifestyle and boosting your home’s value.

 

Azek PVC decking installation.

 

Expert Custom Deck Construction in King County, WA

From new decks to complete replacements, Petra Decks builds beautiful, long-lasting outdoor spaces tailored to your home. We design and install:

  • Custom Decks – Modern, low-maintenance, and built to last.

  • Porches & Patios – Perfect for relaxing or entertaining.

  • Privacy Screens & Trellises – Stylish shade and privacy solutions.

  • Under-Deck Waterproofing – Protect and maximize space.

We work with top brands like Trex, Azek, TimberTech, Fiberon and natural cedar for timeless beauty.

Why Petra Decks Is King County’s Top Deck Contractor

With over 25 years of expert framing and deck-building experience, Petra Decks combines skilled craftsmanship with deep local knowledge to deliver decks that last a lifetime.

  • Local Expertise — Serving Sammamish to Bellevue, we understand the unique weather, soil conditions, and permit requirements to build your deck right the first time.

  • Built on Trust — Transparent communication and reliable service mean many clients return and refer us to their friends and neighbors.

  • Premium Materials — We use only top brands like Trex, Azek, and TimberTech, plus beautiful natural wood options tailored to your style and needs.

  • Licensed & Insured — Fully licensed, bonded, and insured in Washington State, providing peace of mind from consultation through project completion.

Explore Beautiful, Custom-Built Decks by Petra Decks —

Proudly Serving King County, WA

Learn about benefits of Trex decking here

Meet the Crew Behind Petra Decks – King County’s Trusted Deck Builder

Serving Neighborhoods Across King County, WA

Petra Decks proudly serves homeowners in Sammamish, Issaquah, Bellevue, Snoqualmie, Maple Valley, Kent, Auburn and surrounding King County communities. We specialize in custom composite decks, hardwood decking, and multi-level outdoor living spaces designed to fit your lifestyle and the Pacific Northwest climate.

Our experienced team of designers, project managers, and skilled deck builders brings decades of craftsmanship and local knowledge to every project. At Petra Decks, we streamline your deck project from design to completion—on time and with care.

Whether you're dreaming of a modern composite deck or a classic cedar patio, we’re your trusted deck builders in Eastside King County and the greater Seattle area. Let us help you build something beautiful that lasts.

Service Locations:

Maple Valley, Covington, Black Diamond, Kent, Auburn, Renton, Issaquah, Sammamish, Snoqualmie, North Bend, Redmond, Bellevue, Mercer Island, West Seattle, Tukwila, Burien, SeaTac, Des Moines, Normandy Park and surrounding areas .

Ready to bring your dream deck to life?

Contact Petra Decks today for a free consultation and experience the difference 25+ years of craftsmanship can make!

Frequently Asked Questions – Deck Contractor in King County, WA

Q: How much does a custom deck cost in King County?
A: Pricing depends on deck size, design, and materials. On average, composite decks cost $45–$65 per sq. ft., while premium PVC (Azek) and natural cedar decks may vary. Every project starts with a free consultation and detailed estimate.

Q: What areas of King County do you serve?
A: We proudly serve East King County (Sammamish, Issaquah, Snoqualmie, North Bend, Fall City, Preston, Redmond, Newcastle) and South King County (Kent, Auburn, Covington, Renton, Federal Way, Des Moines, Normandy Park, Burien, Black Diamond, Tukwila).

Q: Do you build new decks and repair existing ones?
A: Yes. We handle new deck construction, repairs, replacements, and upgrades. Whether you need a full custom build or just railing/skirting improvements, our team can help.

Q: What decking materials do you recommend?
A: We specialize in Trex and TimberTech composite, Azek PVC, and traditional cedar decking. Each option has benefits in durability, maintenance, and appearance. We’ll help you choose what best fits your lifestyle and budget.

Q: How long does deck installation usually take?
A: Most projects take 1–3 weeks, depending on the design and permitting process. Before we start, we provide a clear timeline and keep you updated throughout.

Q: Do your decks come with warranties?
A: Yes. All projects include manufacturer warranties on materials and our workmanship warranty, so you can feel confident in the long-term quality of your deck.

Q: Can you design custom decks for unique spaces?
A: Absolutely. We create 2D and 3D renderings so you can see your custom deck before construction begins. Every project is tailored to your home’s layout, outdoor space, and personal vision.