Deck Cost for a 2,500 Sqft Home in Illinois (2026)

2026 deck replacement cost for a 1,800–3,000 sqft home in Illinois. Climate + size-tier adjusted ranges and a free calculator.

2026 Deck costs in Illinois

National average is $12,000. Illinois's regional cost index (1.05×) puts the typical deck project at roughly $12,600. Low-end $5,250, high-end $26,250. Deck replacement or rebuild including materials, railing, and labor.

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