How Much Does It Cost to Build a Deck? (Price Guide)

A deck is one of the few home projects where you choose both the size and the material, and the bill moves a lot with each choice. A small pressure-treated platform and a large composite deck with built-in railing sit at opposite ends of the budget.

The best way to estimate is to think in square feet. Pick the footprint you want, then price the material, the labor, and the extras such as stairs, railings, and lighting.

Material is the largest single driver. The installed per-square-foot figures below include the decking, framing, and labor.

• Pressure-treated pine is the lowest-cost option and needs regular sealing or staining.
• Cedar looks richer and resists rot better, at a higher price.
• Composite costs more up front and needs less upkeep, since it does not need staining.
• Tropical hardwood such as ipe sits at the top of the range and is very dense and durable.

Wood decks need recurring staining or sealing, and composite decks can cost more to buy but less to maintain.

Labor is a large part of any deck estimate, and it rises with complexity. Multi-level decks, curves, steep sites, and second-story builds take longer.

If you plan to build the deck yourself or supply the materials, the boards alone cost less per square foot. These figures exclude framing, hardware, and labor.

Remember that the boards are only part of the material bill. Posts, joists, footings, fasteners, flashing, and stairs add up, so a material-only budget needs a margin.

Most decks above a set height need railings to meet code, and railing choice has a visible effect on the look and the price.

Cable railing keeps views open but costs more than wood or aluminum. Check local code for height and spacing requirements.

• Size and shape. Bigger decks cost more, and curves or angles add labor.
• Height above grade. Elevated decks need taller posts, more bracing, and stricter railings.
• Material. Wood, composite, and hardwood vary widely.
• Site conditions. Slopes, poor soil, or limited access raise labor.
• Stairs and railings. Each is a separate line item.
• Extras. Lighting, built-in seating, pergolas, and skirting.
• Permits. Most areas require one for a new deck, and inspections are common.
• Existing deck removal. Tearing out an old deck adds labor and disposal.

Not every old deck needs to be torn out. If the framing is sound, you may only need to replace the boards and railings. If joists, posts, or the ledger board are damaged or rotted, replacement is usually the safer path.

Have a pro inspect the structure, especially the ledger where the deck attaches to the house and the footings. Surface wear is cheap to fix, but structural damage is a safety issue. Ask for repair and replacement quotes side by side.

Published ranges overlap but do not match.

Differences come from the materials each source assumes, whether labor and permits are included, and the regions they cover. A range that stretches across several materials will be wide, and a figure for a single material will be tighter. Use the numbers as a starting point, then ask local deck builders for itemized bids.

A small ground-level deck is a reasonable DIY project for someone with carpentry skills. Anything attached to the house, elevated, or built with stairs involves structural and safety decisions. A weak ledger connection or undersized footing can cause a collapse.

Permits and inspections protect you here. A licensed contractor can pull the permit, follow local code, and carry insurance. Ask for references, a written scope, and warranty terms before you sign.

• What decking, framing, and railing materials are in the quote?
• Does the price include permits, stairs, and removal of any old deck?
• How deep and wide are the footings, and how is the deck attached to the house?
• What is the timeline, and what happens if the weather delays it?
• What warranty covers labor and materials?