Decks Designed for Coastal Living

Deck Builders of Dover NH

Built with the Seacoast in Mind

Dover Decks That Withstand Coastal Conditions

Alliance Deck Builders of Dover creates outdoor living spaces that stand up to moisture, wind, and salt air. From Littleworth to the Cocheco River, our decks are engineered for the climate and built to code. We offer composite, cedar, and pressure-treated builds with custom features like screens, shade covers, kitchens, and more.

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Reliable Work. Clear Communication.

Deck Contractors Dover Homeowners Trust

We’re a local team—no out-of-town subs, no bait-and-switch pricing. Our builders know Dover's permitting process, property layouts, and zoning laws. Whether you're upgrading a patio or starting from scratch, we guide you through design, permitting, and construction from start to finish.

Built to resist humidity, salt, and freeze-thaw cycles

All permitting handled through the city of Dover

Composite, cedar & hybrid deck systems available

Composite deck with roof cover and metal railing in Dover NH

Strong Framing, Smart Drainage & Reliable Materials

Structures That Last Through Every Season

In Dover, coastal weather can be tough on outdoor structures. That’s why we use moisture-sealed framing, stainless or coated hardware, and composite or rot-resistant surfaces that won’t warp or decay. We design for snow loads, wind uplift, and runoff—so your deck looks great and performs year after year.

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Outdoor kitchen and screened porch combo installed on deck in Dover NH

More Than Just Decks

Outdoor Kitchens, Screened Porches & Shade Structures

We specialize in complete outdoor environments. From screened-in porches and grilling stations to pergolas and patio roofs, every structure is designed to fit your lifestyle and property layout. Whether you’re creating a summer hangout or a cozy year-round retreat, we’ve got the experience to build it right.

Custom Designs for Every Property Type

Decks for Slopes, Tight Lots & Waterfront Yards

Dover’s geography ranges from riverfront slopes to tight downtown lots. We work with every type of site condition, using stepped platforms, retaining walls, and elevated designs where needed. Our plans maximize usable space and comply with all city and floodplain regulations.

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Elevated deck on riverfront property with slope in Dover NH

Dover Deck Projects by Neighborhood

Elevated composite deck with river view in Cocheco area of Dover NH

Cocheco River Area: Riverfront conditions require water-resistant framing and compliant elevation—we build to handle it all.

Space-saving cedar deck design on South End lot in Dover NH

South End: Tight lot lines and older homes are common here—our compact deck designs stay compliant without sacrificing function.

Multi-feature deck with pergola near Back River Road in Dover NH

Back River Road: Wide yards allow for large multi-purpose builds—we’ve added outdoor kitchens, pergolas, and hot tub surrounds in this area.

Don't worry, we can help!

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About Alliance Deck Builders of Dover

Our Dover-based crews bring local experience, premium materials, and full project management to every build. We’ve completed decks, porches, and commercial structures across neighborhoods from Central Avenue to Tolend Road. We handle all permits, deliver clear timelines, and never sub out core framing work. When you work with us, you get craftsmanship built for the coast—and service you can count on.

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We Also Build for Businesses

Commercial Decks for Dover Restaurants & Rentals

From rooftop dining spaces to ADA-compliant access decks, we help Dover business owners create outdoor environments that meet code and elevate curb appeal. We offer stamped plans, strong railing systems, and fast turnaround for commercial builds—making us a trusted partner for restaurants, multi-units, and retail spaces.