The answer to 'junction box installation cost' is that the typical cost to install a junction box can vary significantly depending on several factors. Factors that influence the cost include the complexity of the electrical work, the location of the junction box, the materials needed, and whether any drywall or other surfaces need to be repaired.
Generally, homeowners can expect to pay anywhere from $100 to $500 for a basic junction box installation by a licensed electrician. More complex jobs, such as installing a junction box in a difficult-to-access location or one that requires extensive wiring, could cost $500 to $1,000 or more. It's essential to get local quotes from licensed electricians to get an accurate estimate for your specific project.