Cost to Build a 150 Sq Ft Deck
Estimated deck cost for 150 sq ft by material.
A 150 sq ft pressure-treated wood deck costs about $2,250 – $3,750 installed (avg $3,000).
| Material | Estimated cost (installed) |
|---|---|
| Pressure-treated wood | $2,250 – $3,750 |
| Cedar | $3,000 – $6,000 |
| Composite | $4,500 – $9,000 |
| Redwood | $4,500 – $7,500 |
US national-average installed estimates. Height, railings, stairs and footings add to the price. Get local quotes.
Have exact dimensions? Use the full Deck Cost Calculator to enter length, width and depth.
Last reviewed: November 2026
Data sources: Standard volume and area formulas.
Disclaimer: Quantities are estimates from the area you entered; measure your actual space and add a waste allowance. Material and labor costs vary by region.
Frequently Asked Questions
In pressure-treated wood, about $2,250 to $3,750 for pressure-treated wood. Composite costs more up front but lasts longer — see the table.
Composite costs more initially but needs little maintenance and lasts longer, which can make it cheaper over the deck's lifetime.