How Much Does Deck Building Cost?
2026 pricing guide with national averages, detailed breakdowns, and city-level cost data.
National Average
$4,000 - $12,000
A new deck expands your outdoor living space and adds value to your home. The national average cost is $4,000 to $12,000 for a standard deck.
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Deck Building Cost Breakdown
| Project Type | Low | Typical | High |
|---|---|---|---|
| Pressure-Treated Wood Deck | $4,000 | $7,000 | $11,000 |
| Composite Deck (Trex, TimberTech) | $8,000 | $15,000 | $25,000 |
| Cedar Deck | $6,000 | $10,000 | $16,000 |
| Deck Railing Addition | $1,000 | $2,500 | $5,000 |
| Deck Staining/Sealing | $500 | $1,000 | $2,000 |
| Deck Repair | $250 | $750 | $2,000 |
Factors That Affect Deck Building Cost
- Deck size (square footage)
- Material (pressure-treated, cedar, composite)
- Deck height and complexity
- Railing style and material
- Built-in features (stairs, benches, planters)
- Permit requirements
- Site prep and grading
Frequently Asked Questions
How much does a deck cost per square foot?
Pressure-treated wood decks cost $15 to $30 per square foot. Composite decks cost $25 to $50 per square foot. Cedar falls between at $20 to $40 per square foot.
How long does it take to build a deck?
A simple deck takes 1 to 2 weeks. A multi-level or complex deck with built-in features can take 3 to 4 weeks. Permit approval adds time to the overall timeline.
Do I need a permit to build a deck?
Almost always yes. Most jurisdictions require a building permit for new decks, especially if attached to the house or elevated above ground level.
Is composite or wood decking better?
Composite costs more upfront but lasts 25-30+ years with minimal maintenance. Wood is cheaper but needs annual staining/sealing and lasts 10-15 years.
Does a deck increase home value?
Yes. A wood deck recoups about 65% of its cost at resale, and composite decks about 60%. Decks are consistently among the top outdoor improvements for ROI.
Deck Building Cost by City
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