The answer to 'cost to install junction box' is that the cost can vary significantly depending on several factors. Generally, the installation of a basic junction box can range from $50 to $300, but the exact price will depend on your location, the complexity of the project, and whether any electrical work is required.
The main factors that influence the cost include the type of junction box (e.g., metal or plastic), the accessibility of the installation site, the need for any electrical wiring or circuit modifications, and the labor rates in your area. Additionally, if the installation requires permits or inspections, those can add to the overall cost.