The answer to the cost to install a dimmer switch is that it typically ranges from $50 to $300, depending on several factors. The cost can vary based on the complexity of the electrical work, the type of dimmer switch, and whether it requires rewiring or upgrading the electrical panel.
Homeowners should expect to pay on the lower end of that range for a basic dimmer switch installation in an existing light fixture. More complex installations, like replacing a multi-switch setup or installing a smart dimmer, will be on the higher end. It's also important to factor in the cost of the dimmer switch itself, which can range from $20 to $100 or more depending on the features and quality.