Deck Building cost breakdown
At a mid-range, national-average baseline, a typical deck building project is estimated at $4,500 to $13,500. The table below breaks the cost down so you can see where your project is likely to land.
| Decking material | Installed cost per sq ft | Typical total (300 sq ft) |
|---|---|---|
| Pressure-treated wood | $15 to $30 /sq ft | About $4,500 to $9,000 |
| Cedar or redwood | $20 to $40 /sq ft | About $6,000 to $12,000 |
| Composite | $25 to $50 /sq ft | About $7,500 to $15,000 |
| PVC / polymer | $30 to $60 /sq ft | About $9,000 to $18,000 |
| Tropical hardwood | $35 to $70 /sq ft | About $10,500 to $21,000 |
Deck Building cost by project size
Most of your deck building cost scales with size. Here is the estimated national-average range at a few common project sizes.
| Deck size (square feet) | Estimated total cost | Scale |
|---|---|---|
| 150 square feet | $2,250 to $6,750 | Smaller project |
| 300 square feet | $4,500 to $13,500 | Typical project |
| 530 square feet | $7,950 to $23,900 | Larger project |
What drives deck building cost
- Deck size in square feet.
- Material: pressure-treated wood is cheapest, composite and PVC cost more.
- Height and complexity: raised, multi-level, and stairs add labor.
- Railings, built-in seating, lighting, and pergolas.
- Footings, permits, and site prep.
- Regional labor rates.
Key cost factors
Wood vs composite
Pressure-treated wood is the cheapest upfront but needs regular sealing. Composite and PVC cost 40 to 60 percent more to install but require almost no maintenance, which can pay off over the life of the deck.
Height and structure
A simple ground-level deck is the most affordable. Raised decks need more framing and footings, and stairs or multiple levels add significant labor.
Railings and extras
Railings are a major line item, especially metal or glass. Built-in benches, planters, lighting, and pergolas all add to the total.