The standard light switch height is 48 inches from the floor to the bottom of the switch box. While the National Electrical Code doesn't mandate a specific height for residential installations, this measurement has become the industry standard because it's comfortable for most people to reach from both standing and sitting positions.. NEC and ADA receptacle and switch mounting height requirements for residential and commercial installations.
Standard outlet height is 12-18" from the floor; light switches at 48-50". NEC code rules for residential and ADA-compliant installations.. There isn't a specific height mentioned in building and electric codes for a light switch, but some local codes specify parameters. To ensure that the switches are placed at appropriate heights for most people, builders and electricians follow routine standards.