Deck cost calculator
Get an instant, itemized deck estimate. Enter the size, choose pressure-treated, cedar or composite, add the railing and stairs and see the price at 2026 rates. Free, no sign-up.
Your estimate
$19,781 to $26,762
Before tax
Built from 2026 material and labour rates. Your contractor confirms the final quote after seeing the site.
How much does it cost to build a deck?
Decks are priced per square foot of footprint, and the price goes up with the material, the height, the railing and the stairs. Installed prices for a deck at ground level with railing:
- Pressure-treated
- $65–$90 per ft²
- Cedar
- $72–$99 per ft²
- Composite
- $90–$122 per ft²
A 300 ft² pressure-treated deck at ground level, with wood railing and one set of stairs, usually comes to $19,800 to $26,800 installed. The framing and footings are a bigger part of that than most people expect, which is why a deck costs more than a patio the same size.
A raised deck, a glass or aluminum railing and extra stairs all add to the price. Your contractor confirms the final quote once they’ve seen the yard.
Related guides
- How to compare contractor bidsThree bids for the same job can come in thousands of dollars apart, usually because each contractor priced a slightly different job. Get everyone quoting the same written scope first, and the numbers become worth comparing.
- When do you need a building permit?Painting and new flooring almost never need a permit. Work on the structure, wiring, plumbing or outer shell of the house usually does, and skipping the permit tends to cost you when you sell.