ServiCover📌 Key Takeaway: A small ground-level wood deck can cost $3,000-$4,500, while a 16x20 composite deck addition averages around $25,000 nationally.
Cost by Material
| Material | Installed per Sq Ft |
|---|---|
| Pressure-treated | $25-$40 |
| Cedar | $30-$50 |
| Mid-grade composite | $35-$55 |
| Premium composite | $50-$70 |
| Capped PVC | $55-$80+ |
| Tropical hardwood | $55-$80+ |
Project Examples
| Project | Typical Cost |
|---|---|
| 120 sq ft pressure-treated, ground level | $3,000-$4,500 |
| 200 sq ft mid-range | $8,000-$14,000 |
| 300 sq ft composite, raised 24" | $13,000-$19,000 |
| 500 sq ft hardwood, 6 ft elevated | $30,000-$45,000 |
| 16x20 wood deck (national average) | About $18,300 |
| 16x20 composite deck (national average) | About $25,100 |
What Raises the Price
- Height — raised decks need deeper footings and larger beams ($500-$9,000 extra)
- Railings and stairs
- Built-ins, lighting and multi-level designs
- Removing an old deck
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Get Free Quotes →Frequently Asked Questions
What size deck is most common?
Around 12x16 to 16x20 feet is common for family decks.
Can I lower cost by building it myself?
DIY saves labor, but permits, footings and ledger attachment must still meet code.
🔎 How we research: The ServiCover Editorial Team compiles prices and guidance from published 2026 cost guides, manufacturer information and industry sources. Prices are national ranges and vary by location, home and provider, so always compare written quotes. We don't perform the work ourselves, and we may earn a commission when you request quotes through our partners — see our Advertiser Disclosure.