Licensed and Insured
NJHIC#13VH12287000
Top-Rated Deck Builders in South Jersey –
C-JAM Construction
Premium wood and composite decks custom-built in South Jersey. C-JAM Construction delivers lasting craftsmanship with zero shortcuts — and it shows.
Custom Decks Built with Purpose
At C-JAM Construction, we don’t just build decks — we create outdoor spaces that add long-term value to your home. Whether you're starting from scratch or upgrading an old structure, we use top-tier materials and overbuild where it counts.
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Cedar, pressure-treated wood, and Trex® composite decking
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Vinyl railings with a lifetime warranty (manufactured locally by Great Railing in Williamstown, NJ)
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Upsized framing lumber and fasteners that exceed building code
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Clean, code-compliant builds that hold up to time and weather
Trim Packages & Custom Options
Every deck we build comes with our standard finish package, so you never end up with a half-done job. You’ll get:
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White PVC trim boards around the perimeter
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Breaker board or picture frame layout included
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One set of steps included in our standard finish option
- Optional lattice wrap, post and beam wraps, and more
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These aren’t upgrades — they’re the details that make your deck look complete.
More Than Just Decks
We also build:
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Covered front porches
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Outdoor kitchens
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Roof overhangs
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Free-standing platforms
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Custom railings and stair sets
If it goes outside and needs to look clean and last, we build it.
Not sure which color fits your space? Use the Trex® Color Selector to explore options.
Recent Deck Projects by C-JAM Construction
Frequently Asked Questions About Deck Building in South Jersey
What’s the average cost to build a deck in South Jersey?
The average cost to build a deck in South Jersey ranges from $70–$100 per square foot, depending on the materials and design. A basic pressure-treated deck will cost less than a custom Trex deck with upgraded railings, lighting, and stairs. We offer free quotes based on your specific layout and features.
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Do I need a permit to build a deck in New Jersey?
Yes — most towns in South Jersey require a permit before building a deck. If it’s a new build, you’ll need zoning approval first, which requires having a site survey of your property. Once you have that, we’ll provide the drawings and paperwork you need to submit. After the plans are approved, we take it from there — scheduling inspections and handling the rest of the process start to finish.
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What’s better: Trex or pressure-treated wood?
Trex is low-maintenance, long-lasting, and looks more polished. Pressure-treated wood is cheaper upfront but requires regular sealing and may warp over time. We build with both and can help you decide what’s best based on your budget and long-term goals.
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How long does it take to build a deck?
Most decks take 7–14 days start to finish. That includes demo, footings, framing, decking, railings, and inspections. Weather and township delays can add time, but we stay on schedule and keep you in the loop every step of the way.
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Do you handle township inspections?
Yes. We coordinate all required inspections — footing, framing, and final — directly with the township. We’ll make sure everything is done to code and passes the first time.
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What areas of South Jersey do you serve?
We build decks across Camden, Gloucester, and Burlington Counties, including towns like Mullica Hill, Haddonfield, Marlton, Cherry Hill, and surrounding areas.
Let’s Build the Deck You’ve Been Visualizing
Whether you’re planning a custom deck, front porch, or a full outdoor setup, C-JAM Construction delivers clean, durable craftsmanship with no shortcuts. Reach out today and let’s bring your backyard plans to life — one board at a time.