The answer to 'switch installation cost' is that the cost to install a light switch can vary widely depending on several factors. Generally, the typical range for a basic light switch installation by a professional electrician is between $100 to $300 or more. The final cost will depend on the complexity of the job, the materials needed, and your location.
Factors that can affect the cost include the type of switch (single-pole, three-way, etc.), whether the wiring needs to be updated, the accessibility of the electrical box, and any necessary permits or inspections required by your local jurisdiction. In some cases, the cost may be higher if the switch needs to be installed in a difficult-to-access location or if extensive drywall work is required.