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.
Estimated Total
$18,100
Itemized Breakdown
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.
Quick Cost Reference
Cost by Tier
Entry-level composite (Trex Enhance or Fiberon), ground-level, basic railing, simple rectangular layout, $30-$45/sq ft for 300 sq ft
Mid-tier composite (Trex Select or TimberTech), standard height, upgraded railing system, $45-$65/sq ft for 300 sq ft
Premium composite (Trex Transcend or Azek), multi-level or elevated, aluminum railing, built-in lighting, $65-$100+/sq ft for 300 sq ft