Positioning the wall boxes for switches is left up to the homeowner and the builder.
Electrical switch box height.
As a result heights are often a matter of convention or preference.
Installing electrical boxes for light switches.
However the nec says nothing about the precise height that electrical wall switches must be.
Installing electrical boxes for light switches and wall outlets.
Easy access to find and operate.
Position the bottom of the box on that mark and fasten it to the stud.
Many aspects of electrical wiring installation have very specific guidelines set forth by the national electrical code nec and local building codes.
Measure 2 inches under that mark and make another mark for the bottom of a standard 4 inch electrical box.
Electrical code and box heights.
The average height for light switches is 46 inches from the floor to the center of the switch box.
Most electrical switches are mounted at a height of 44 to 46 inches from the bottom of the electrical box to the top of the finished floor.
This is also true for counter top outlets in the kitchen and bathroom where switches and outlets are at the same height.
However your local electrical code is the ultimate voice with these matters.