
Get the Deck You’ve Always Wanted at a Price You Can Afford
South of the Southern State Parkway, the backyard is where family life actually happens. Across Bellmore, Merrick, Wantagh, Seaford, and the Massapequas, backyards work harder than almost anywhere else on Long Island - in-ground pools, swing sets, graduation parties, and, south of Merrick Road, boats tied up at the bulkhead. A deck here isn't decoration. It's the floor of an outdoor room your family will live on from April through October.
Long Island Deck Company - a Decks Unique company with 39 years of building experience - designs and builds custom decks, pool surrounds, and pergolas throughout southeast Nassau. We're Trex Platinum and TimberTech Pro certified, we frame with kiln-dried KDAT lumber instead of wet pressure-treated stock, and we manage permits and inspections so you're not the one standing in line at the building department. And because yards here share so much DNA, this page is organized around how families actually use them: the pool deck, the entertaining deck, and the shade that makes both usable in July.
Backyards from North Bellmore down through North Massapequa are built around in-ground pools, and a pool changes everything about deck design. The surface takes constant barefoot traffic, dripping swimsuits, sunscreen, and chlorine or salt-system splash - conditions that punish ordinary wood and cheap composite alike.
For pool surrounds we usually steer families toward PVC decking or higher-end composite lines. PVC contains no wood fibers, so it shrugs off standing water and mildew even on low decks with limited airflow under them - exactly the situation around most pools. Lighter colors and heat-mitigating board technology stay comfortable underfoot on a 90-degree afternoon, and textured finishes give wet feet grip. Our composite deck builders page covers the Trex, TimberTech, and Azek/PVC lines we install in detail.
Layout matters as much as material: where the steps land, where towels get dropped, where parents sit to watch the water, and how swimmers reach the house without crossing the dining area. Benches, float storage, and gates that satisfy New York pool-barrier code are designed in from day one, not tacked on after the inspector flags them.
The second deck personality in this part of Nassau is the entertaining deck - the one that hosts Sunday dinners, birthday parties, and half the block on a Saturday night. A dining zone needs room for chairs to slide back without hitting a railing. The grill belongs where smoke blows away from the table, not over it. A lounge corner with a fire table extends the season weeks in both directions.
On the hi-ranches common in Merrick and Wantagh, that often means a multi-level design - cooking and dining off the kitchen, a few wide steps down to a lounge level. On lower capes, a single sprawling platform with a picture-framed border does the job. Either way, we build in the finishing details: cocktail railings wide enough to rest a drink, riser lighting on the stairs, and post-cap lights that glow instead of glare.

Yards in this stretch of the south shore are open and sunny - great for pools, brutal for a 1 p.m. lunch outside. That's why shade is part of almost every design conversation from Bellmore to the Massapequas, and why pergolas are among our most requested projects.
A fixed pergola over the dining zone breaks up the sun, defines the "room," and gives string lights and ceiling fans something to hang from. For families who want more control, we install retractable and motorized louvered pergolas, with slats that rotate open for full sun, tilt for filtered light, and close tight to shed a passing shower so the party keeps going. They're especially popular on pool decks, where you want blazing sun at 11 a.m. and real shade by mid-afternoon. See the options on our pergolas and outdoor structures page - and operate one at our showroom before you buy.
Pergolas can be integrated into a new deck - posts engineered into the framing, not bolted on top - or built freestanding over an existing deck or patio. Either way, they catch wind, so we anchor them with hurricane-rated hardware.
South of Merrick Road in Bellmore, Merrick, Seaford, and Massapequa, the canals add a fourth use case: the waterfront deck. These decks live with salt air, persistent moisture, and coastal storm winds - and the view drives the whole design.
For canal-front homes we lean on stainless or ceramic-coated fasteners, hurricane tie-down hardware, and decking that won't be bothered by salt spray. Cable railings or slim-profile composite rails keep sightlines to the water open instead of fencing them off. And because many of these properties sit low, KDAT framing and under-deck ventilation matter even more - trapped moisture is what shortens a waterfront deck's life.
Most families here land on composite or PVC - Trex, TimberTech, or Azek - because the boards keep their color and never need staining, and the manufacturers back them with fade-and-stain warranties running 25 to 50 years depending on the line. As a Trex Platinum installer we can also offer a 10-year labor warranty on eligible Trex Signature and Transcend decks. We still build beautiful natural wood decks too, and we're honest about the staining schedule that comes with them.
Underneath every deck we build, the story is the same: KDAT framing. Kiln-dried-after-treatment lumber arrives at a stable moisture content instead of drying - and twisting - in your backyard, so the frame stays straight, fasteners stay tight, and the finished deck stays flat. Most builders skip it because it costs more; we consider it worth every penny. Our KDAT framing carries a limited lifetime transferable warranty, and every project is backed by our lifetime workmanship guarantee.
Plenty of decks in this area were built in the 1990s and 2000s with framing that's still structurally sound under a surface that's splintered, faded, or just dated. If that's your deck, you may not need to start over. With resurfacing, we strip the old deck boards and railings, inspect and reinforce the frame, bring connections up to current code, and install new composite or PVC decking, railings, and lighting on the existing structure.
The result looks and feels like a new deck at a meaningfully lower cost, and the project moves faster because footings and framing are already in place. The honest caveat: resurfacing only makes sense over a healthy frame. We inspect first, and if the frame isn't worth keeping, we'll tell you straight and price both paths.
This corner of Nassau County is really a belt of neighboring hamlets and villages, and we build in all of them:
Before you choose boards from a brochure, come walk on them. Our showroom at 119 Commack Road in Commack has full-size deck displays, railing systems you can lean on, and pergolas you can operate. From the Bellmore–Merrick–Massapequa belt it's an easy drive north. Bring photos of your yard or your survey, and a designer will sit down with you and start sketching the space your family will actually use. Or skip ahead and request a free design consultation - we'll come to you.

Yes - pergolas are one of our most active project types in all three communities. We build fixed pergolas integrated into new decks, freestanding pergolas over existing patios, and motorized louvered systems, all engineered and anchored for wind. You can operate display models at our Commack showroom before deciding.
Absolutely. Motorized louvered pergolas - slats that rotate from full sun to filtered shade to fully closed against rain - are among our most requested upgrades in Massapequa, Massapequa Park, and the surrounding hamlets, especially over pool decks and dining areas. We build them into new decks or retrofit them over existing spaces.
For Wantagh pool surrounds we usually recommend PVC decking or a premium composite line. PVC has no wood content, so constant splash and wet towels don't faze it, and textured, lighter-color boards stay cooler and give bare feet grip. We'll also plan the layout around pool-barrier code, gates, and how swimmers actually move between the water and the house.
Look past the quote sheet. Verify licensing and insurance, ask about manufacturer certifications - we hold Trex Platinum and TimberTech Pro status - and ask what the frame is built from, not just the surface. We frame with kiln-dried KDAT lumber backed by a limited lifetime transferable warranty, and every project carries our lifetime workmanship guarantee. Then visit the builder's showroom and judge the work in person.
We're honest about this one: our calendar is built around full custom builds and resurfacing projects, so we generally take on repair work late in the season as the build schedule winds down. If your decking is worn but the frame underneath is sound, resurfacing is often the smarter fix anyway - a brand-new surface and railings on your existing structure.
From a pool deck in North Massapequa to a canal-front rebuild in Merrick, your backyard deserves better than a bolted-on platform. Call us at (631) 623-9300 or (516) 689-7800, or stop by the Commack showroom, and let's design the outdoor room your family will use for decades.