The answer to 'how much is circuit breaker upgrade' is that the cost can vary significantly depending on several factors. In general, a basic circuit breaker upgrade for a single circuit can range from $150 to $500, while a full service panel replacement can cost $800 to $2,000 or more.
The main factors that influence the cost include the size and age of your electrical panel, the number of circuits being upgraded, the complexity of the work, and whether any electrical wiring or other components need to be replaced as well. Labor costs from licensed electricians are also a major factor. Getting quotes from local electrical contractors is essential to determine the exact cost for your specific home and project needs.