The answer to 'skylight installation cost in Illinois' is that the typical cost can vary widely depending on several factors. In general, skylight installation in Illinois can range from around $1,000 to $5,000 or more, depending on the size, type, and complexity of the project.
The main factors that affect skylight installation costs include the size and style of the skylight, the accessibility of the installation location, the complexity of the roof structure, and whether any structural modifications are required. Larger, custom-sized skylights or those that need to be installed in difficult-to-access areas will typically be on the higher end of the cost range. Additionally, if the roof needs to be repaired or reinforced to support the skylight, that can significantly increase the overall project expense.