Engineered for Comfort and Durability

Deck Builders of Claremont NH

Built for the Upper Valley

Local Deck Builders with Regional Expertise

At Alliance Deck Builders of Claremont, we design and build custom decks that withstand cold winters, humid summers, and steep terrain common in the Upper Connecticut River Valley. Whether you're located near downtown or in rural Sullivan County, our crews understand the codes, soil conditions, and structural demands unique to the area.

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Every Detail, Every Season

Decks That Work for How You Live

We know Claremont homeowners want usable space year-round. That’s why we offer screen porches for bug season, covered decks for rain, and railings designed to handle winter snow loads. Our work is always tailored, never templated—because no two yards or families are alike.

Built for NH snow and freeze-thaw cycles

Fully permitted through Claremont city offices

Cedar, composite, or pressure-treated builds

Deck with snow-rated framing and screened porch in Claremont NH

Smart Builds for Slopes and Soil

Structurally Sound from the Ground Up

Many Claremont lots are sloped, shaded, or close to property lines. We use stepped footing systems, reinforced framing, and drainage-conscious layouts to ensure decks stay level, safe, and secure for decades. Our crew knows how to navigate hillside zoning and local slope stability requirements, keeping your build up to code and on track.

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Custom outdoor kitchen and pergola on backyard deck in Claremont NH

Pergolas, Porches, and Outdoor Kitchens

Specialty Structures for Outdoor Living

Whether you’re adding shade with a freestanding pergola, building a full grilling station, or screening in your porch for summer nights, we build outdoor features that add comfort and usability. Every project is custom-designed for your space, sun path, and storage needs—installed by our licensed, local team.

Historic Home? We’ve Got You Covered

Classic Designs with Modern Codes

Claremont’s historic homes demand a unique blend of aesthetic respect and modern safety. We’re experienced in retrofitting decks to older framing and foundations, always using materials and styles that complement your home. From decorative railings to discrete fasteners, we preserve your home's character while bringing it up to today’s standards.

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Historic Claremont home with cedar deck and custom railing design

Claremont Deck Projects by Neighborhood

Multi-area deck with pergola in Maple Avenue area of Claremont NH

Maple Avenue District: Many homes here have deep lots ideal for large decks—we often build multi-zone layouts with grilling areas, pergolas, and screened porches.

Rooftop and platform deck build in downtown Claremont NH

Downtown Claremont: Historic zoning and compact lots mean we build to exact code, often using elevated platforms and low-profile railing systems.

Composite deck with sun protection in Pleasant Street Extension Claremont NH

Pleasant Street Extension: With open yards and western exposure, decks here benefit from shade structures and fade-resistant composite materials.

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About Alliance Deck Builders of Claremont

Our Claremont-based team builds every project with care, code knowledge, and deep respect for the region’s climate and character. From homes near Broad Street Park to rural properties off Route 12A, we’ve completed builds of every type—always with quality materials and client-first service. We handle permitting, materials, and timelines start to finish, and we never sub out structural work. When you hire us, you get local pros who care about doing it right.

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Commercial Deck Work, Too

Rooftops, Restaurants & Rentals

We also serve businesses and property managers throughout Claremont with custom decks for outdoor dining, common areas, rooftop lounges, and rental units. Our team works closely with code officials and delivers stamped plans where needed—making us the right choice for both residential and commercial projects.