The answer to 'how much to replace electrical wiring in Illinois' is that the cost can vary significantly depending on several factors. In general, the typical range for rewiring a home in Illinois is between $3,000 to $15,000 or more. The final cost will depend on the size of your home, the complexity of the wiring, the materials used, and the labor costs in your local area.
Factors that can affect the cost include the age and condition of your existing wiring, the accessibility of the wiring, the need to upgrade the electrical panel, and any additional work required such as repairing walls or ceilings. It's essential to get quotes from licensed and insured electrical contractors in your local area to get an accurate estimate for your specific project.