Building a new deck in New Jersey costs between $25 and $54 per square foot installed in 2026, depending on the material. A pressure-treated wood deck runs $15–$25 per sq ft installed, composite decking costs $25–$54 per sq ft, and PVC/vinyl runs $5–$13 per sq ft for materials alone, with labor pushing the total to $25–$45 per sq ft.
For a typical 16×20 foot (320 sq ft) deck in Monmouth County, expect to pay roughly $8,000–$12,000 for pressure-treated wood, $14,000–$20,000 for Trex composite, and $20,000–$30,000+ for a larger premium composite build.
Spring and early summer are peak deck-building months in New Jersey. Homeowners who start their deck project in April get their deck built before Memorial Day — right when it starts getting used every weekend.
Key Takeaways
- Deck building in NJ costs $25–$54 per sq ft installed, depending on material and features.
- Pressure-treated wood decks run $15–$25 per sq ft installed — the most budget-friendly option.
- Composite (Trex) decking costs $25–$54 per sq ft installed — higher upfront cost but zero staining or sealing for 25+ years.
- A 16×20 composite deck costs $16,000–$32,000, depending on railing, stairs, and built-in features.
- Ocean Township deck permits typically run $100–$500 and are required for any deck over 30 inches off the ground.
Deck Cost by Material — Installed Price per Square Foot
| Material | Material Cost per Sq Ft | Labor Cost per Sq Ft | Total Installed per Sq Ft | 320 Sq Ft Total |
|---|---|---|---|---|
| Pressure-treated pine | $8–$15 | $7–$12 | $15–$25 | $4,800–$8,000 |
| Cedar | $12–$22 | $8–$14 | $20–$35 | $6,400–$11,200 |
| Composite (Trex/TimberTech) | $16–$32 | $10–$22 | $25–$54 | $8,000–$17,280 |
| PVC/Vinyl | $5–$13 | $12–$22 | $25–$45 | $8,000–$14,400 |
| Tropical hardwood (ipe) | $15–$30 | $12–$20 | $30–$55 | $9,600–$17,600 |
Deck Size and Total Project Costs
| Deck Size | Sq Ft | Pressure-Treated | Composite (Trex) | PVC |
|---|---|---|---|---|
| Small (10×12) | 120 | $1,800–$3,000 | $3,000–$6,480 | $3,000–$5,400 |
| Medium (12×16) | 192 | $2,880–$4,800 | $4,800–$10,368 | $4,800–$8,640 |
| Standard (16×20) | 320 | $4,800–$8,000 | $8,000–$17,280 | $8,000–$14,400 |
| Large (20×20) | 400 | $6,000–$10,000 | $10,000–$21,600 | $10,000–$18,000 |
| Large premium (16×20 w/ features) | 320+ | $8,000–$12,000 | $14,000–$20,000 | $15,000–$25,000+ |
These are base deck costs, including framing, decking boards, standard railing, and stairs to grade. Add-ons like built-in seating, lighting, pergolas, and outdoor kitchens add $2,000–$10,000+ depending on scope.
What Drives Deck Costs Up
Railing upgrades. Standard pressure-treated railing is included in the base price. Upgrading to composite railing (Trex Transcend, Timbertech Evolution) adds $5–$15 per linear foot. Glass panel railing adds $15–$30 per linear foot.
Stairs. Each step adds $150–$350 to the deck cost, depending on width and material. A deck that's 3 feet off grade needs 3–4 steps. A deck 6 feet off grade needs 7–8 steps.
Footings and foundation. Standard concrete deck footings cost $100–$250 each, and a typical deck needs 6–12 footings. If your soil is rocky or the slope is steep, excavation and footing costs increase.
Permits. Ocean Township and most Monmouth County municipalities require a building permit for any deck over 30 inches above grade. Permit fees run $100–$500 and include plan review and 2–3 inspections during construction.
Built-in features. Bench seating, planters, pergolas, outdoor lighting, and integrated grilling stations add $1,000–$8,000+, depending on complexity.
Pressure-Treated vs. Composite: The Lifetime Cost Comparison
Pressure-treated wood is the cheapest option upfront. But it needs staining or sealing every 1–3 years, and boards typically need replacement after 10–15 years. Composite costs more initially but lasts 25–30+ years with zero staining, sealing, or sanding.
| Cost Factor | Pressure-Treated | Composite (Trex) |
|---|---|---|
| Initial build (320 sq ft) | $4,800–$8,000 | $8,000–$17,280 |
| Annual maintenance | $100–$300 (stain/seal) | $0–$50 (occasional wash) |
| Board replacement (year 12–15) | $2,000–$5,000 | Not needed |
| 25-year total cost | $8,300–$15,500 | $8,000–$18,000 |
Over 25 years, the total cost gap between pressure-treated and composite has narrowed significantly. For homeowners who plan to stay in their Ocean Township home long-term, composite often wins on lifetime value.
Deck Permit Requirements in Ocean Township
In New Jersey, structural deck construction generally requires a permit from your local municipality. Surface-level patios (concrete slabs on grade) typically don't. If your deck project involves:
- Footings below frost line (42 inches in NJ)
- Ledger board attachment to the house
- Railing over 30 inches high
- Stairs with more than 2 risers
- Electrical wiring for lighting
You'll need to pull a building permit before construction begins. A licensed contractor handles permit requirements as part of the job.
How We Do It All Handyman Can Help
Deck building is a core competency at We Do It All Handyman & Construction Corp. Our carpentry services in Ocean Township cover everything from pressure-treated basics to premium composite builds with custom railing, lighting, and built-in features. We handle permits, footings, framing, decking, railing, and stairs — the full scope from dirt to done.
With our NJ contractor license #13VH09886800, 25+ years in business, and 100,000+ properties served, we've built decks of every size and material across 50+ New Jersey communities. Call (732) 333-7800 for a free estimate.
Frequently Asked Questions
1. How much does it cost to build a deck in New Jersey?
Deck building in NJ costs $25–$54 per sq ft installed. Pressure-treated wood runs $15–$25 per sq ft, and composite runs $25–$54 per sq ft.
2. How much does a 16×20 composite deck cost?
A 16×20 (320 sq ft) composite deck costs $8,000–$17,280, depending on railing, stairs, and built-in features. Premium builds with custom features run $14,000–$20,000.
3. Is composite decking worth the extra cost?
Composite costs more upfront but lasts 25–30+ years with zero maintenance. Over 25 years, the total cost gap between pressure-treated and composite narrows to $0–$3,000 — and composite looks better the entire time.
4. Do I need a permit to build a deck in Ocean Township?
Yes, for any deck over 30 inches above grade. Permit fees run $100–$500 and include plan review and inspections.
5. How long does it take to build a deck?
A standard 16×20 deck takes 1–2 weeks from permit to completion. Larger or more complex builds with custom features take 2–4 weeks.
