Deck Installation Cost in 2026

Deck pricing depends on framing complexity, materials, railings, stairs, and footings. Here are typical installed ranges and add-ons.

Typical cost per sq ft (installed)

Treated wood: ~$25 – $45 / sq ft
Composite: ~$45 – $80 / sq ft
Premium / multi-level: $80+ / sq ft

Common add-ons

Railings and posts
Stairs and landings
Permits and inspections
Lighting and electrical
Picture framing or diagonal boards

Deck materials & tools

Pressure-treated lumber — Home Depot
Composite decking boards — Lowe’s
Deck screws + driver bits — Amazon

Budget tips

Keep the shape simple (rectangles are cheapest).
Limit stairs and turns.
Choose standard railing options.

Use the calculator

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