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Unit pricing

Chicago deck building pricing per square foot

Deck Building cost per square foot in Chicago, Illinois in 2026.

Low

$5,000

Average

$9,100

High

$13,700

Chicago crews quote about $17 – $91 per square foot.

Multiply local unit rates by your real measurements.

What drives deck building prices in Chicago

Local labor, permitting and climate move Chicago prices away from the national average.

Labor market

Chicago is a union-heavy market, so licensed trade labor prices well above average.

Permits

City permits, licensed-contractor registration and inspections are strictly enforced.

Climate

Freeze-thaw, ice dams and lake-effect snow drive roofing and masonry spend.

Chicago unit pricing by material

Pressure-treated pine$17 – $40
Cedar$28 – $51
Redwood$34 – $57
Composite (Trex, TimberTech)$34 – $68
PVC / cellular vinyl$40 – $80
Tropical hardwood (ipe, cumaru)$46 – $91
Aluminum$51 – $105

Ways to lower your Chicago price

  • Keep the deck rectangular and under 200 sq ft where codes ease off.
  • Frame with pressure-treated lumber and spend only on the visible deck surface.
  • Build ground level — every foot of elevation adds framing, footings and railing.
  • Schedule in fall when builders discount to keep crews busy.
  • Skip fascia wraps and picture framing details that add labor with no structural value.

Chicago questions

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