How Much Does a Deck Cost to Build?

Most contractors determine their deck cost per square foot.

"The 3 biggest things that decide the cost of your deck are the size of your deck, the material you choose, and the options you add to it." - John (owner)

Our average deck is around 400 square feet or 20' wide by 20' long. Most houses are better suited for a more rectangular shaped deck, say like a 14' by 28'. Knowing that decks are usually priced per square foot can help you better speak the language of deck builders. If you'd like to see some real examples of decks with estimates we have them available, as well. For some further details about what can affect your deck pricing, read on below.

Deck Stairs and Steps

One factor that can make a significant difference in the cost of your deck is the number of steps it takes to reach the ground. Steps are very labor intensive to build and install so they tend to be rather expensive. So a Pressure Treated deck about 3'-4' above the ground should cost somewhere between $30-$35 per square foot including railing & steps. However, a small deck like a 10'X12' or 12'X14' that is 8'-9' above the ground may cost as much as $48-$55 per square foot because it needs a long flight of steps.

Additional features such as diagonal flooring, flower boxes, deck planters, benches, pergolas, etc will increase the price, as well as removal of your old deck.

Synthetic Decking

deck stair symbolOn average synthetic decks run about 40% more than pressure treated decks ($40-$50 per square foot). But for smaller decks with longer flights of stairs, the cost per square foot will be higher. A 10'X12' deck 8' above the ground, with synthetic floor and railings, could cost as much as $70-$75 per square foot with the steps included.

As you make your decision, keep in mind the cost of maintenance. Synthetic decks tend to require less maintenance overall than pressure treated wood decks. So even though there is some additional cost upfront, the time and maintenance money saved is worth it.

Check out our deck flooring materials guide for more information. In addition, the deck railings you choose will also make a difference in the price of your project.

A quote or estimate from Decks R Us includes all these features, and more. And we guarantee it won’t be one penny more when we are all finished. We give you this quote in writing.

Make sure when considering any deck builder that the price or the quote includes everything and that it’s guaranteed not to jump by $1,000 by the time the final bill comes in, assuming there have been no additions or big changes to the design.


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