16x20 Deck Cost
A 16 by 20 foot deck is 320 square feet. In 2026, building one typically costs $6,790 – $21,700 installed, depending mostly on the decking material you choose.
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16x20 deck cost by material
| Material | Estimated installed cost |
|---|---|
| Pressure-treated pine | $6,790 – $17,220 |
| Cedar / redwood | $7,110 – $18,180 |
| Composite (Trex, TimberTech) | $7,430 – $19,780 |
| PVC / capped polymer | $8,390 – $20,100 |
| Exotic hardwood (Ipe) | $9,030 – $21,700 |
Includes decking, framing, labor, railing, a short flight of stairs, and a permit for a ground-level deck. Building it yourself (pressure-treated, materials only) drops to roughly $4,230 – $10,180.
Customize this estimate in the Deck Cost Calculator →
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What goes into the price of a 16x20 deck
- Material — the single biggest swing, from budget pressure-treated to premium composite or hardwood.
- Height — a raised or second-story 16x20 deck costs more than a ground-level one.
- Railing & stairs — included above; removing them lowers the price.
- Labor vs DIY — labor is often close to half the total.
Plan your 16x20 deck
- Deck Cost Calculator — adjust material, height, and features.
- Deck Board Calculator — boards and screws for 320 sq ft.
- Footing & Concrete Calculator — posts and concrete.
Other popular deck sizes
- 10x10 deck cost
- 12x10 deck cost
- 12x12 deck cost
- 12x16 deck cost
- 12x20 deck cost
- 14x20 deck cost
- 16x16 deck cost
- 20x20 deck cost
- 8x12 deck cost