The answer to 'cost to install switch' is that the cost can vary widely depending on several factors. Typically, the cost to install a basic light switch ranges from $50 to $200 for a professional electrician. The price can be influenced by factors such as the complexity of the electrical work, the accessibility of the wiring, the need for any additional materials or permits, and the labor rates in your local area.
It's important to get quotes from multiple licensed and insured electricians in your local area, as they will be able to provide a more accurate estimate based on the specific requirements of your project. While some simple switch replacements may be doable as a DIY project, it's generally recommended to hire a professional electrician for any electrical work to ensure safety and code compliance.