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Costs 5 min read

How Much Does It Cost to Build a Deck?

What a new deck really costs — how material, size, height, and site conditions move the price, and where the budget actually goes.

By RenovateRadar ·

Deck pricing is driven less by square footage than by three things: the decking material, how high the deck sits off the ground, and what the site demands underneath it. Two decks of the same size can differ dramatically once you factor in footings, framing, and railings.

Deck cost by material

  • Pressure-treated wood — the most affordable option, but needs regular sealing and staining.
  • Cedar or redwood — a step up in appearance and rot resistance, at a higher material cost.
  • Composite and PVC — the highest material cost, offset by near-zero maintenance over its life.

What drives the price beyond decking

  • Height off the ground — a raised deck needs taller posts, more footings, and often stairs and guardrails.
  • Railings — code-required on elevated decks, and a significant line item in metal or glass.
  • Site conditions — sloped, rocky, or soft ground raises the cost of digging and pouring footings.
  • Permits and inspections — most attached or elevated decks require both.

How to get an accurate deck quote

Get written, line-itemed quotes from licensed local builders who have walked the site. Make sure each quote specifies the decking material, footing count, railing type, and whether permits are included — that is where estimates diverge most.

Frequently asked questions

Is a composite deck worth the extra cost?
Composite costs more up front but needs almost no maintenance — no sealing, staining, or board replacement — so many owners find it cheaper over a decade, especially in harsh climates.
Do I need a permit to build a deck?
Usually yes for attached decks and any raised deck, though low ground-level platforms are sometimes exempt. Check your local building department before starting.

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