The answer to 'junction box installation cost' is that the cost can vary widely depending on several factors. Generally, the cost to install a new junction box in a home can range from $100 to $500 or more, depending on the complexity of the job, the materials needed, and whether you hire a professional electrician or do it yourself.
Some key factors that affect the cost include the size and type of junction box, the accessibility of the location, the need for any electrical wiring or drywall work, and the labor rates in your local area. Homeowners should always get multiple quotes from licensed electricians to compare prices and find the best value for their project.