Add Shade, Character, and Structure to Any Outdoor Space

Pergolas, Gazebos & Arbors in New Hampshire

Not Just Decoration These Structures Do More

Shade, Structure & Style for Decks and Backyards

Pergolas, arbors, and gazebos create visual anchors and usable outdoor spaces — all while adding curb appeal. A pergola can create partial shade over your dining area or hot tub. A gazebo can give you a quiet retreat or family gathering spot. And an arbor adds an inviting entry to your yard or garden path. We build each structure with site-specific framing and materials that stand up to wind, moisture, and snow in New Hampshire.

What We Build and How It Lasts

Materials, Framing & Design Options

We offer wood and composite pergolas, cedar arbors, and roofed or open-air gazebos — all built with weather-rated posts, secure footings, and architectural detail. Our designs include options like lattice tops, slatted roofs, solid shingles, or translucent polycarbonate. You can also add lighting, climbing planters, or fans. All structures are anchored and framed to resist uplift, rot, and moisture — built with both longevity and style in mind.

Cedar, pressure-treated, or composite framing

Freestanding or attached to deck or home

Slatted, solid, or lattice-style roof options

Custom freestanding pergola with cedar posts and slatted roof on patio in New Hampshire

Designed Around How You Use Your Space

Custom Structures That Fit Your Layout & Lifestyle

We build every pergola, arbor, and gazebo to suit the space it lives in — not the other way around. Whether you need partial shade for your deck, a decorative arbor for your garden path, or a fully enclosed gazebo for year-round relaxation, we tailor every element to your needs. Our team factors in sun exposure, wind direction, existing hardscapes, and home style to deliver structures that look like they’ve always belonged.

Cedar gazebo with shingle roof and built-in bench seating set in New Hampshire backyard

Why Homeowners Choose Alliance

Detail-Driven Craftsmanship with Local Durability

Our team understands what it takes to build outdoor structures that hold up in New Hampshire’s climate. We design with snow load, moisture resistance, and anchoring in mind — then add the details that make each project unique. Whether it’s a simple arbor with curved braces or a multi-post pergola with lighting and fan hookups, our builds combine engineering and artistry. You’ll get a structure that stands strong and looks great for years.

Enhance What You Already Have

Pergolas & Arbors That Integrate with Existing Decks

Have a deck you love but wish it had more shade or style? We can add a custom pergola or arbor directly onto your existing structure. We check for structural support, install reinforcements if needed, and blend materials to match your deck or railing system. These additions bring instant charm, vertical interest, and usable coverage — all without a full rebuild. It’s a smart, stylish upgrade that boosts both function and visual appeal.

Attached pergola installed over existing composite deck with integrated lighting in NH

Why Choose Alliance for Outdoor Structures?

Built for New Hampshire Weather: Framed and anchored to handle snow, rain, and wind.

Custom Fit to Your Space: Each structure is sized and styled for your home and yard.

Decorative & Functional Designs: Add beauty, shade, and structure — all in one.

Optional Roofing & Lighting Add-Ons: Make your space usable in more seasons and more ways.

Secure, Code-Compliant Framing: We build it right with proper footings and hardware.

Don't worry, we can help!

Structures That Enhance Every Outdoor Moment

Your backyard should feel like an extension of your home — and the right structure makes that happen. Whether you’re growing vines over an arbor, gathering under a gazebo, or relaxing in partial shade beneath a pergola, our builds turn outdoor areas into favorite destinations. We guide you through every design decision, from material choices to roof types, to ensure the finished product is both beautiful and built to last.

Decorative garden arbors and entry arches

Slatted pergolas for light-filtered shade

Covered gazebos for outdoor seating areas

Durability You Can Count On

Framing, Hardware & Materials That Hold Up

We don’t believe in “kits.” Every structure we build uses premium materials and job-specific framing — no shortcuts. Posts are anchored with concrete footings or specialty brackets, beams are sealed against moisture, and roofs are flashed for long-term protection. Our hardware is all rated for exterior use, and our finishes are chosen for New Hampshire’s freeze-thaw cycles. With Alliance, you don’t just get curb appeal — you get lasting performance.

Frequently Asked Questions

Pergolas, Gazebos & Arbors FAQs

At Alliance Deck Builders of New Hampshire, we build more than decks we build outdoor living spaces where families gather, neighbors visit, and memories are made. From the first call to the final screw, our team handles every step with clarity, craftsmanship, and care. If you’re ready to add space, style, and long-term value to your home, we’re ready to build it the right way.

What’s the difference between a pergola, gazebo, and arbor?

A pergola has an open slatted or latticed roof. A gazebo has a full roof and often built-in seating. An arbor is a smaller structure often used as a decorative entry.