The answer to 'how much to replace junction box in my area' is that the cost can vary significantly depending on several factors. Typically, the cost to replace a junction box for a homeowner can range from around $150 to $500 or more.
Some key factors that influence the cost include the size and complexity of the junction box, the accessibility of the location, the need for any additional electrical work, and the labor rates in your local area. Older homes or those with outdated wiring may require more extensive repairs, which can increase the overall cost. It's important to get quotes from licensed electricians in your local area to get an accurate estimate for your specific project.