Deck Building Cost Breakdown: Material Options and Estimates
Published Apr 14, 2026 Β· 6 min read
A new deck is one of the best return-on-investment home projects, recovering 60-80% of costs at resale. But costs can range from $15 to $75+ per square foot depending on materials and complexity.
Material Cost Comparison
| Material | Boards/sq ft | Lifespan | Maintenance |
|---|---|---|---|
| Pressure-treated pine | $2-5 | 10-15 years | Stain/seal every 2-3 years |
| Cedar | $4-8 | 15-25 years | Stain every 3-5 years |
| Composite (Trex, etc.) | $8-15 | 25-50 years | Occasional cleaning only |
| PVC | $10-18 | 30-50 years | Minimal |
| Tropical hardwood (Ipe) | $10-25 | 40-75 years | Oil every 1-2 years |
Full Project Cost Breakdown
For a 300 sq ft (12Γ25) composite deck:
| Component | Estimated Cost |
|---|---|
| Decking boards | $2,400-4,500 |
| Frame lumber (PT pine) | $600-1,000 |
| Concrete footings (8-12) | $200-400 |
| Hardware (joist hangers, screws) | $200-400 |
| Railing (composite) | $800-2,000 |
| Stairs (if needed) | $300-800 |
| Labor (if hired) | $3,000-6,000 |
| Total DIY | $4,500-9,100 |
| Total with contractor | $7,500-15,100 |
Design Considerations
- Height: Ground-level decks skip railing requirements (most codes: under 30")
- Shape: Rectangular is cheapest; angles, curves, and multi-level add 20-40%
- Permits: Most decks over 200 sq ft or 30" high require a permit ($50-500)
- Joist spacing: 16" on center is standard; composite often requires 12" OC
Pressure-Treated vs Composite
PT pine costs half upfront, but staining every 2-3 years at $1-2/sq ft closes the gap over 20 years. Composite costs more initially but requires zero staining. Over a 25-year lifespan, composite often wins on total cost.
Try it: Use our Deck Calculator to estimate boards, framing, and total materials for your deck project.
π Sources: Portland Cement Association NAHB