The answer to 'how much to replace switch in my area' is that the cost to replace a light switch can vary significantly depending on several factors. Typically, the cost ranges from $50 to $200 for a professional electrician to replace a single switch, but the final price can be influenced by the complexity of the job, the type of switch, and your location.
The main factors that affect the cost include the accessibility of the switch, the need for any additional electrical work, the type of switch (basic vs. smart/dimmer), and whether you need to replace the electrical box or other components. Hiring a licensed and insured electrician is important to ensure the work is done safely and up to code.