Deck pricing is quoted in a lot of different ways, per square foot, per project, "starting at," which makes it hard to compare one number to another. Here's the actual breakdown by size and material, plus a calculator that adjusts for your specific project.

Cost Estimator

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estimated installed cost range

Cost by material (installed, per square foot)

MaterialInstalled cost/sq ftMaintenance
Pressure-treated pine$25-50Restain every 1-3 years (Jonesboro's humidity pushes toward the shorter end)
Cedar$30-47Reseal roughly annually to every other year in this climate
Composite$35-70, often more for premium linesOccasional washing, no staining or sealing

Cost by size (pressure-treated pine, ground-level, no railing)

SizeSquare feetEstimated range
10x12120 sq ft$3,000-$6,000
12x16192 sq ft$4,800-$9,600
16x20320 sq ft$8,000-$16,000

These ranges are planning-level, drawn from the same per-square-foot rates as the estimator above, not a firsthand quote. Elevated decks and railed decks run higher, the estimator adjusts for both.


What changes the number beyond size and material


Other cost factors beyond size and material


Already have a deck that needs work instead of a new one?

Repair and refinishing carry their own separate cost logic, not a fraction of new-construction pricing. A single joist repair or replacement typically runs $100-350 per joist, sistering a weakened joist runs $300-1,200 or more per section, and full structural repair (joists, beams, and ledger together) commonly runs $1,500-5,000. Nationally, deck repairs average around $1,465, with most falling between $570 and $2,600. See our deck repair and deck staining and refinishing pages for the full breakdown.


National context: does a deck pay for itself?

The 2025 Cost vs Value report puts the national average wood deck addition at $18,263, recouping about 94.9% of that at resale, roughly $17,323 back. Composite runs higher upfront, about $25,096 on average, recouping about 88.5%, or roughly $22,199. Both outperform most interior remodeling projects on resale recoup, wood slightly more as a percentage, composite adding more in absolute dollars.


FAQ

Is the estimator's number a real quote?

No, it's a planning-level range based on current market per-square-foot rates. A real quote depends on your specific site, soil conditions, and design, and that's what a follow-up conversation is for.

Why does the same size deck cost so much more in composite?

Material cost is the main driver, composite boards themselves cost more than pressure-treated lumber. You're trading a higher upfront number for skipping years of staining and sealing labor.

Does the estimator include permit fees?

No, permit fees are separate and vary by town, the estimator shows a permit contact note once you select your town, but the fee itself isn't folded into the cost range since it isn't a construction cost.


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