A deck looks simple: posts, boards, a railing. Call (201) 676-3099 or book a free estimate.
A deck looks simple: posts, boards, a railing. It's also the one part of your house that holds twenty people at once, six feet in the air, in the weather. That's why New Jersey towns permit and inspect decks, and why the cheap one sags in five years. Here's how a deck should be built in NJ, how to pick the material, and what it costs in 2026.
Permits: yes, you need one
Under New Jersey's Uniform Construction Code, a new deck or a rebuilt one needs a building permit from your town's construction office, plus a zoning sign-off for setbacks and lot coverage. The plans show the size and height, the footing locations, the beam and joist sizes, how the ledger attaches to the house, and the stairs and railings.
Then come the inspections: the footing holes before the concrete goes in, the framing before the deck boards go on, and a final. Replacing the boards and railing on a sound frame often counts as an ordinary repair — ask your town before you assume. We pull the permits and meet the inspectors on every deck. An unpermitted deck shows up at sale and on the insurance claim after somebody falls off it.
The rules that keep a deck up
- Footings below the frost line — 36 inches in most of North Jersey — on undisturbed soil, sized for the load. Posts that sit in the dirt rot at the ground line; ours sit on metal bases above the concrete.
- The ledger board bolted to the house's rim joist with structural screws or through-bolts, never nails, with flashing so water can't rot the house behind it. Most deck collapses are a ledger pulling away.
- Joists and beams sized from span tables, with joist hangers and hardware rated for pressure-treated lumber. Ordinary steel corrodes against it.
- Guard rails on any deck more than 30 inches off the ground, at least 36 inches high, with no opening a 4-inch ball can pass through.
- Stairs with an even rise and run, a graspable handrail, and a light at the top and bottom.
- Lateral-load connectors tying the deck to the house framing so it can't rack sideways when the party moves.
Materials: pressure-treated, cedar, composite or PVC
Those numbers are installed and include the frame. The frame is always pressure-treated lumber, whatever goes on top. Railings are priced on top of the decking: wood is cheapest, aluminum and cable run more, glass panels the most.
| Decking | Installed, 2026 NJ | What you get |
|---|---|---|
| Pressure-treated pine | $45 – $70 / sq ft | Cheapest. Needs staining every 2–3 years. Checks and splinters with age. 15–20 years. |
| Cedar | $60 – $85 / sq ft | Better looks, natural rot resistance, still needs sealing. 15–25 years. |
| Composite (wood-plastic) | $70 – $110 / sq ft | No staining, no splinters. Gets hot in full sun. 25–30+ years, with fade and stain warranties from the maker. |
| PVC / capped polymer | $90 – $130 / sq ft | Lightest, most stain-proof, best for shaded or damp spots. Longest life. |
What a deck costs in NJ (2026)
Every one of those includes the plans, the permits, the footings, the rated hardware and the cleanup. If a quote you're holding doesn't say "permit" anywhere on it, ask why.
| Deck | Typical fixed-price range |
|---|---|
| 12 x 16 pressure-treated deck, wood rail, one stair | $9K – $15K |
| 12 x 16 composite deck, aluminum rail | $16K – $24K |
| 16 x 20 composite, two levels or wrap-around stairs | $28K – $45K |
| Add: covered porch roof or pergola over the deck | +$8K – $30K |
| Add: low-voltage stair and post lighting | +$800 – $2.5K |
| Add: tearing out and hauling away the old deck | +$1.5K – $4K |
Resurface or rebuild?
Get under it with a screwdriver. Probe the posts at the ground line, the ledger where it meets the house, and the joist ends. Soft wood, rusted hangers or a ledger held on with nails means rebuild. If the frame is solid and under about 15 years old, new decking and a new railing on the old bones is a real option and about half the price.
One more check: pull back a board near the house and look at the flashing. If there isn't any, water has been running behind the ledger for years, and the rim joist of your house may be worse than the deck.
The deck is never just the deck
A gas line for the grill. A hose bib by the stairs. Outlets on the posts, lights on the steps, a fan under the roof. An outdoor kitchen next year. Most deck builders sub all of that out, or tell you to call someone after. Our plumbers and electricians are on the same crew, so the gas line and the outlets get permitted, inspected and finished with the deck — one contract, one fixed price, one foreman.
How First Call builds a deck
- We measure the yard and check the house's rim joist before we draw anything.
- Plans and permits handled by us. Zoning checked before you fall in love with a size.
- An itemized fixed price that can't change without your signature. No deposit — you pay as the work gets done.
- Footings inspected before concrete. Framing inspected before boards. Final inspection passed before the walkthrough.
- The same crew every day, a photo update text every workday, and a yard that's swept before we leave.
- An item-by-item walkthrough at the end. You hold the final payment until you sign off, and the No-Surprise Guarantee is printed in your contract.
Questions people ask next
How long does it take to build a deck in NJ?
The permit takes two to six weeks depending on the town. The build itself is one to two weeks for a simple deck and three to four for a multi-level deck with a roof. Book in winter and the permit is in hand for a spring start.
Is composite decking worth the extra money?
Do the 15-year math. A pressure-treated deck needs staining every two to three years — that's five or six weekends or five or six bills. Composite needs a hose. If you plan to stay in the house, composite usually wins. If you're selling in two years, pressure-treated is the smarter spend.
Can you build a deck over my old concrete patio?
Usually. A low deck can sit on sleepers over a sound slab, and an elevated one needs its own footings dug beside or through it. We check the slab, the drainage and the door height at the consultation and quote the version that works.
Does a deck need a permit if it's low to the ground?
In most NJ towns, yes — any new deck attached to the house, and most freestanding ones over a certain size, need a permit even if there's no railing required. The 30-inch height rule decides whether you need a guard rail, not whether you need a permit. We ask your town so you don't have to.
Need deck building near you?
If you searched “deck building near me” anywhere in New Jersey, that's us. First Call Contracting is based in Paramus and sends its own licensed crew to all 21 counties — written price before work starts, no deposit, a real person on the phone 24/7.
Want a deck the inspector signs off on — and the kids can jump on?
Free in-home consultation. Plans, permits and an itemized fixed price before a single hole is dug.
Or call Alex direct: (201) 676-3099