The answer to 'how much is outlet installation upgrade' is that the cost can vary significantly depending on several factors. Generally, outlet installation upgrades range from $75 to $300 per outlet, but the exact price will depend on your location, the complexity of the project, and whether you need to upgrade your electrical panel or wiring.
Some key factors that influence the cost include the type of outlet (standard, GFCI, USB, etc.), the accessibility of the electrical box, the need for any drywall or surface repair, and whether you're upgrading a single outlet or multiple outlets throughout your home. It's best to get quotes from local licensed electricians to get an accurate estimate for your specific project.