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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 TypeLowTypicalHigh
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.

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