Deck addition cost
Short answer
A deck addition costs about $4,000–$15,000 nationally (typically $9,500). Costs run 15–35% higher in the Northeast and West, and lower in the South. Pick your state for a localized range.
National range
$4,000–$15,000
Typical
$9,500
Deck addition cost by state
| State | Estimated cost |
|---|---|
| CA | $5,100–$19,200 |
| TX | $3,700–$14,000 |
| NY | $5,000–$18,800 |
| FL | $3,900–$14,700 |
| IL | $4,200–$15,800 |
| GA | $3,700–$13,800 |
Your state & scope
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Frequently asked questions
How much does a deck addition cost?
About $4,000–$15,000 nationally for a mid-range deck addition (wood to composite, ~200 sq ft), typically around $9,500. Your state and finish level move it.
Why does a deck addition cost more in some states?
Labor and materials vary by region. The same deck addition runs about $5,100–$19,200 in California versus $3,700–$14,000 in Texas. Pick your state in the calculator.
How can I save on a deck addition?
Choose a budget finish tier, get at least three itemized bids, keep the existing layout to avoid moving plumbing or walls, and schedule in the off-season. The calculator's budget tier shows the lower end.
51 states supported.