Upfront Cost: On average, it'll cost you about $2-$5 per square foot for pine decking materials, depending on the grade of pine you choose and the treatment. If you choose to have your deck professionally installed, you'll pay per square foot for the labor, and another $150 to $300 to have the deck stained.

How much does a treated pine deck cost?

Treated pine decking costs between $150 - $300 per square metre. Hardwood timber decking costs $320+ per square metre. Composite timber decking costs $350+ per square metre.

How much does a 20x20 deck cost?

New Deck Installation Cost

The average homeowner spends $2,200 to build a 10x10 foot deck, $6,160 to build a 14x20 deck, and $8,800 to build a 20x20 deck. The cost to build a deck with pressure-treated wood, hardwood, or composite is about $25 per square foot, for both materials and installation.