The 2026 deck cost guide
Average deck building costs, broken down by size, material, and labor. Built for homeowners and contractors planning a new build.
Most homeowners spend between $4,500 and $15,000 on a new deck, which works out to roughly $30–$60 per square foot installed. The exact number depends on five things: size, material, height, location, and whether you DIY or hire a contractor.
Average deck cost by size
| Size | Sqft | Pressure-Treated | Composite | Hardwood |
|---|---|---|---|---|
| 10×10 | 100 | $2,000–$3,500 | $3,500–$6,000 | $5,500–$9,000 |
| 12×12 | 144 | $2,800–$4,800 | $4,800–$8,500 | $8,000–$12,500 |
| 12×16 | 192 | $3,800–$6,200 | $6,500–$11,000 | $10,500–$16,000 |
| 16×20 | 320 | $6,000–$10,500 | $10,500–$18,000 | $17,000–$26,000 |
| 20×20 | 400 | $7,500–$13,000 | $13,000–$23,000 | $21,000–$32,000 |
Cost by material
Material is the single largest cost driver. See the full material comparison →
- Pressure-treated pine: $15–$25/sqft installed. The budget pick.
- Cedar: $20–$35/sqft. Naturally rot-resistant, beautiful grain.
- Composite (Trex Enhance, TimberTech): $30–$60/sqft. Low maintenance, 25-year warranty.
- PVC / capped: $45–$65/sqft. Premium look, fully synthetic.
- Hardwood (Ipe, Mahogany): $50–$75/sqft. Premium and long-lasting.
What's included in deck cost
- Decking boards and structural lumber (joists, beams, posts)
- Concrete footings and post anchors
- Fasteners, hangers, and hardware
- Basic railings and stairs
- Permit fees (where required)
- Contractor labor (roughly 40% of total)
Hidden costs most people forget
- Demolition of an existing deck: $500–$2,500
- Electrical wiring for outdoor outlets or hot tubs: $400–$1,800
- Landscaping repair after construction: $200–$800
- Premium finishes like hidden fasteners, picture-framing: +10–15%
- Site prep — grading, tree removal, retaining walls
How to save money on your deck build
- Build off-season. Late winter and fall offer 10–20% better pricing. Read more →
- Stick to a rectangle. Custom shapes add 15–25% in labor.
- Choose entry-level composite instead of premium for similar long-term value.
- DIY railings or stairs only — leave structural work to pros.
- Get 3 quotes. Pricing varies wildly by contractor backlog.
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