The answer to 'how much does skylight cost in Illinois' is that the cost of a skylight can vary widely depending on several factors. Typically, skylight installation in Illinois can range from $1,000 to $5,000 or more, depending on the size, type, and complexity of the project.
The size of the skylight, the material (e.g., glass, acrylic, or polycarbonate), the framing required, and the accessibility of the installation location can all impact the final cost. Additionally, the complexity of the roof structure, the need for any structural modifications, and the labor costs in your local area can also influence the overall price. It's essential to get multiple quotes from reputable local roofing contractors to get an accurate estimate for your specific project.