Add Style, Shade, and Structure to Your Outdoor Space

Pergolas, Gazebos & Arbors in Washington

More Than Just a Cover — These Are Outdoor Focal Points

We Build Custom Pergolas, Gazebos, and Arbors That Fit Your Yard

A pergola adds light-filtering shade. A gazebo creates a freestanding getaway. An arbor invites guests in with charm. At Alliance Deck Builders, we design and build each structure to fit your layout, match your deck or patio, and hold up in Washington weather. Whether you want modern lines or rustic curves, we’ll make it look and feel like part of your home.

Choose the Outdoor Feature That Fits Your Space

Shade and Structure for Every Yard or Deck

Every yard is different — and every family uses it differently. We’ll help you decide what works best: a pergola for partial shade, a gazebo for covered seating, or an arbor to frame a path or garden. All options are built from solid materials, anchored correctly, and finished cleanly.

Cedar and pressure-treated wood options

Freestanding or attached framing styles

Optional lighting, seating, and privacy upgrades

Custom cedar pergola over composite deck with outdoor furniture and hanging lights

Framed and Finished to Last Through Every Season

Built for Rain, Wind, and Northwest Conditions

We don’t just build for looks — we build for longevity. Our pergolas, gazebos, and arbors are constructed with weather-treated lumber, galvanized fasteners, and framing techniques that shed water and resist shifting. Whether you want open rafters or a full shingled roof, your structure will be ready for Washington’s weather.

Freestanding backyard gazebo with seating and privacy screen surrounded by greenery

Add Function, Not Just Form

We Build for Seating, Shade, and Backyard Enjoyment

Looking to create a reading spot, a garden entrance, or a shaded hangout space? We can integrate benches, lighting, privacy screens, and climbing vines into your structure. It’s not just a decorative feature — it’s a real part of how you use your space.

Built Right — From Footing to Finish

Anchored, Leveled, and Designed for Years of Use

Every structure we build is engineered for strength. We dig proper footings, use pressure-treated posts, and install galvanized brackets that keep things stable for the long haul. Whether it's a small arbor or a full backyard gazebo, we make sure it's secure, level, and built to handle years of Washington wind and rain.

Pergola posts anchored with galvanized brackets on pressure-treated footing base

Why Homeowners Trust Our Outdoor Structures

Custom Sizing and Placement: Every build is tailored to your yard, deck layout, and sun angle.

Weather-Resistant Framing: All posts and beams are treated or sealed to resist moisture and decay.

Full Design Flexibility: Choose curves, trim, lighting, privacy add-ons, or latticework.

Freestanding or Attached: We build anchored gazebos or tie-in pergolas with proper support.

Seamless Deck Integration: Each structure is framed to match your materials, stain, and finish style.

Don't worry, we can help!

Shade, Charm, and a Reason to Step Outside

From relaxing with a book to hosting guests, outdoor structures make spaces more inviting. We help you choose the design that fits your goals — with add-ons that increase comfort and beauty. Even a simple arbor can turn a plain yard into a welcoming outdoor space.

Trellises, built-in benches, and light kits available

Solid roof or open-beam rafters

Framed to meet local code and wind resistance

Start With a Sketch — End With a Backyard Showpiece

We Design, Permit, and Build Every Structure Start to Finish

You don’t need a landscape plan to start — just a vision. We’ll turn your ideas into a workable plan, handle city permits, and build the structure cleanly and efficiently. We build fast but never rush. Your new pergola, arbor, or gazebo will be something you use — and admire — for years.