The answer to 'dimmer switch installation cost' is that the cost can vary significantly depending on several factors. In general, the typical range for a professional dimmer switch installation can be anywhere from $50 to $300 or more, depending on the complexity of the job and your location.
Some key factors that influence the cost include the type of dimmer switch being installed (basic vs smart/WiFi-enabled), the difficulty of the electrical work required, whether any wiring or electrical panel upgrades are needed, and the hourly labor rates in your local area. Additionally, if you need to hire a licensed electrician rather than doing it yourself, that will also add to the overall cost.