How Much Does a New Deck Cost?
In 2026, building a new deck costs between $15 and $60 per square foot installed, depending on material. A standard 300 sq ft deck with pressure-treated wood runs $6,000–$10,000. The same size deck in composite decking runs $10,000–$18,000. Luxury hardwoods like ipe or teak can exceed $25,000 for a similar deck.
Replacing an existing deck (demo + rebuild) typically costs 20–30% more than new construction due to the additional labor of tearing out the old structure.
Deck Cost by Material
| Material | Cost per Sq Ft (Installed) | Lifespan | Maintenance |
|---|---|---|---|
| Pressure-Treated Pine | $15 – $35 | 10–15 years | Stain/seal every 2–3 years |
| Cedar | $20 – $45 | 15–25 years | Seal every 2–3 years |
| Redwood | $25 – $50 | 20–30 years | Minimal with oil finish |
| Composite (Trex, TimberTech) | $30 – $60 | 25–30 years | Wash annually, no staining |
| PVC / Capped Composite | $35 – $65 | 30+ years | Very low maintenance |
| Hardwood (Ipe, Teak) | $30 – $60 | 25–40 years | Oil annually |
Composite decking demand is rising fastest in humid Southeast climates where wood rot is a chronic maintenance cost. In dry Southwest markets, pressure-treated wood still offers better 10-year value.
Deck Cost by Size
| Deck Size | Pressure-Treated | Composite |
|---|---|---|
| Small (100–150 sq ft) | $2,500 – $5,000 | $5,000 – $9,000 |
| Medium (200–300 sq ft) | $5,000 – $10,000 | $9,000 – $18,000 |
| Large (400–500 sq ft) | $9,000 – $17,000 | $16,000 – $30,000 |
| Extra Large (600+ sq ft) | $14,000 – $25,000 | $25,000 – $45,000 |
What Adds to the Cost?
- Multi-level decks: Each additional level adds 20–40% to the cost and requires additional structural engineering.
- Built-in features: Benches, planters, pergolas, and privacy screens each add $500–$5,000.
- Stairs: A standard deck stair run costs $1,000–$2,000.
- Railing system: Aluminum balusters with cable rail runs $150–$350 per linear foot. Glass panel rail costs $200–$600 per linear foot.
- Lighting: Deck lighting (recessed post caps, stair lights) adds $500–$2,500.
- Permits and inspections: Most municipalities require permits for attached decks ($150–$500).
Frequently Asked Questions
Is composite decking worth the extra cost?
For most homeowners, yes. Composite costs more upfront but eliminates annual staining and sealing, never rots or splinters, and lasts 25–30 years. Over a 15-year period, the total cost of ownership is often comparable to or less than wood once maintenance is factored in.
How long does it take to build a deck?
A typical 300 sq ft deck takes 3–7 days for a professional crew from ground-breaking to completion, plus permit processing time (which can add 1–4 weeks depending on your municipality).
💡 Smart Choice
If you're building a deck primarily for resale value, keep it simple — a well-built 300 sq ft pressure-treated deck with clean railing typically returns more per dollar than an elaborate multi-level composite build.