The answer to 'how much does deck cost in Illinois' is that the cost of a deck can vary significantly based on several factors. Typical deck construction costs in Illinois can range from $20 to $50 per square foot, with the average being around $30 per square foot.
The cost of a deck in Illinois is influenced by the size of the deck, the materials used (such as wood, composite, or PVC), the complexity of the design, the location and accessibility of the site, and labor costs in your local area. Additionally, permits, inspections, and other regulatory requirements can also impact the overall cost.