No, you do not strictly need a licensed electrician to replace a standard residential light switch if you are comfortable with basic home DIY electrical tasks, possess the proper insulated tools, and strictly follow safety precautions. However, hiring a professional is strongly recommended if you are uncomfortable working around live electrical wires, dealing with ungrounded vintage metal junction boxes, troubleshooting complex multi-way traveler switch configurations, or installing smart switches in homes lacking a permanent neutral wire. Verification: Turn off the main breaker, verify zero voltage with a non-contact tester, and consult local building codes before attempting any DIY electrical replacement.
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