Deck Building Cost Calculator

Estimate the cost of building a composite deck based on size, materials, and features.

Last updated: March 25, 2026

Deck Building Cost Calculator

Estimate the cost of building a composite deck based on size, materials, and features.

1001,000 sq ft

Estimated Total

$18,100

Cost per sq ft$60
vs National Average+29%

Itemized Breakdown

Materials
$9,000
Labor
$7,500
Permits
$600
Railing (included in base)
$0
Stairs (one set)
$1,000
Total$18,100

This calculator provides estimates based on national averages adjusted for your region. Actual costs may vary significantly based on specific project conditions, contractor availability, material prices, and local market factors. Always get at least 3 quotes from licensed, insured contractors before starting your project.

Want the full picture?

Read our complete Composite Deck Building cost guide with material comparisons, contractor tips, savings strategies, and regional pricing data.

View Full Cost Guide

Quick Cost Reference

National Average$14,000
Typical Range$9,000 - $22,000
Low End$6,000
High End$35,000

Cost by Tier

Budget

Entry-level composite (Trex Enhance or Fiberon), ground-level, basic railing, simple rectangular layout, $30-$45/sq ft for 300 sq ft

$9,000
Mid-Range

Mid-tier composite (Trex Select or TimberTech), standard height, upgraded railing system, $45-$65/sq ft for 300 sq ft

$16,000
Premium

Premium composite (Trex Transcend or Azek), multi-level or elevated, aluminum railing, built-in lighting, $65-$100+/sq ft for 300 sq ft

$28,000

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