How much does it cost to build a deck?

Pressure-treated decks run about $35 per square foot installed, cedar around $50, and composite $70 or more. A 200 sq ft deck typically costs $7,000–$14,000.

Is composite decking worth it?

Composite costs more upfront but needs almost no maintenance and lasts decades, which can pay off over the life of the deck.

📁 theHomework.ca_□×

Deck Cost Estimator

Ballpark cost to build a new deck.

Planning a general contractor project?

Tell us what you need and local pros will get in touch. Free, no obligation.

Deck area (sq ft)Decking materialHeight

Save your results to your home — free.Open the full tool →

How to use this calculator

Enter the deck's square footage.
Choose decking material and whether it's raised.
See an installed-cost range, then get quotes.

Tired of calling around? Post your project once and let local pros come to you.

Frequently asked questions

How much does it cost to build a deck?: Pressure-treated decks run about $35 per square foot installed, cedar around $50, and composite $70 or more. A 200 sq ft deck typically costs $7,000–$14,000.
Is composite decking worth it?: Composite costs more upfront but needs almost no maintenance and lasts decades, which can pay off over the life of the deck.