Deck size guide
The most common deck sizes, what each one fits, and roughly what it'll cost. Use this to pick the right footprint before you build.
Popular deck sizes at a glance
Cost ranges below assume mid-range composite decking and a low (2–4 ft) deck height. Pressure-treated will be ~40% less; hardwood ~50% more.
| Size | Sqft | Cost range | Best for |
|---|---|---|---|
| 8×10 | 80 | $2,400–$4,800 | Small balcony, grill area for 2–4 people |
| 10×10 | 100 | $3,000–$6,000 | Bistro table, lounge chairs for 2–4 |
| 12×12 | 144 | $4,300–$8,600 | Dining table for 4–6 |
| 12×16 | 192 | $5,800–$11,500 | Dining + lounge area, family of 4 |
| 16×16 | 256 | $7,700–$15,400 | Dining + grill + small lounge |
| 16×20 | 320 | $9,600–$19,200 | Full outdoor living: dining, lounge, grill |
| 20×20 | 400 | $12,000–$24,000 | Entertainment deck for 8–12 people |
| 20×24 | 480 | $14,400–$28,800 | Multi-zone deck with hot tub area |
How to choose the right deck size
- Plan for furniture, not just floor. A dining set needs 10×12 minimum once chairs pull back.
- Don't overpower the house. Decks larger than ~20% of the house footprint look out of scale.
- Check setbacks. Most municipalities require 5–10 ft from property lines.
- Account for stairs. A standard run takes ~3×4 ft of additional space.
Cost per square foot (quick reference)
Multiply your planned area by $15–$75/sqft installed depending on material. Use our deck cost calculator for a precise estimate based on your shape, height, and add-ons.
Outfit your new deck
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Outdoor Solid Composite Decking Boards 96"x5.43"x1", Polymer Composite Decking for All Weather Use,Poolside,Backyard,Patio(6 Pcs,Redwood and Maple,21.72sqft)
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HERA'S HOUSE 6-Piece Patio Furniture Set, All Weather 7 Seats Outdoor Wicker Sofa with Ottomans, Rattan Patio Conversation Set with 5.5" Cushions and 44" Coffee Table, Beige
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Veradek Block Series Long Box Planter - Large Rectangular Planter for Indoor or Outdoor Patio/Porch | Durable All-Weather Use with Drainage Holes | Modern Décor for Tall Plants, Flowers or Shrubs
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Outdoor Solid Composite Decking Boards 96"x5.43"x1", Polymer Composite Decking for All Weather Use,Poolside,Backyard,Patio(6 Pcs,Rosewood and Light Grey,21.72sqft)
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