Home Improvement Skills & Specialties Electrical

How to Set Standard Outlet and Light Switch Heights

The Spruce / Kevin Norris

Setting electrical outlets and wall switches for standard, uniform heights is important both for ease of installation and for user convenience.

Height variances make it more difficult to fish cable through the walls. Uniformity is critical when placing the insulation in the walls and attaching drywall to the studs. More important is how the switches and outlets work for users. Irregular heights for light switches, for instance, can be disorienting and unsafe.

Area Recommended Height
Outlet height 12 inches above the floor to the bottom of the box
Countertop outlet height Tops between 15 and 20 inches from the countertop surface
Outlet height (special needs) 12 to 15 inches
Light switch height 48 inches
Light switch height (special needs) 44 to 48 inches

Outlet Height

The standard height for wall outlet boxes is about 12 inches from the top of the floor covering to the bottom of the receptacle box (or 16 inches to the top of the box).

If you are setting box heights prior to the installation of the subfloor, floor covering, or any underlayment, be sure to account for this expected height difference. If you have actual samples of the materials, it's helpful to stack them together and work off of that.

For the disabled and elderly, 15 inches above the top of the floor covering is usually considered the lowest standard height, but they can be as high as required. Residents in wheelchairs may benefit from slightly higher outlet boxes, with the bottom of the box no less than 15 inches above the floor. 

Countertop Outlet Height

On countertop outlets, it is standard to install outlet boxes so the tops are between 15 and 20 inches from the countertop surface. Make sure all outlet boxes are set at exactly the same height since these outlets will be highly visible. 

Light Switch Height

The standard height for wall switches in most rooms (excluding those over kitchen counters) is 48 inches above the top of the floor covering (measured to the bottom of the box).

For those with special needs, 48 inches is usually specified as the maximum height, since higher levels can be difficult to reach when sitting in a wheelchair. In these situations, it is fine to position them slightly lower—with the bottom of the box 44 inches above the floor, for example). 

5 Ways to Measure Outlet and Switch Height

Individually measuring each outlet height with a tape measure is one way to set outlet heights. But there are a few other tricks you might wish to use to speed up the process.

Measure With a Tape Measure

With a tape measure close at hand, you can quickly measure outlet and switch heights by starting the hook end on the floor and measuring upward.

Measuring tape on wooden beam for standard height of wall outlet or switch box

The Spruce / Kevin Norris

Measure With a Laser Level

Determine your preferred box height and make a single mark on any stud. With a laser level placed on the other side of the room, shoot a line across the entire length of the wall you are working on. Use the mark on the wall as your starting point. Work off this line as you place each box or, to preserve batteries, make pencil marks on studs and then shut off the laser level.

If you turn off the level function on the laser level if you just want to draw a straight line, irrespective of floor level. Or you can keep the level function on in order to set box height in relation to the floor.

Laser level determining height for wall outlet or switch box across wooden beams

The Spruce / Kevin Norris

Measure With a Drywall Square

This quick method works best before the floor covering is already installed. If you have a drywall square, place the long end of the square's "T" perpendicular to the floor. Hold the longest part of the square roughly parallel to the floor. Mark a line across four studs by running your pencil along the bottom part of the straightedge. Place the receptacles at this height. This gives you a height of 14 inches. If you then lay a floor, thus raising the floor level, you end up with a height of roughly 12 inches above the floor.

Drywall square measuring height for blue wall outlet or switch box and marking wooden beam

The Spruce / Kevin Norris

Measure With a Hammer

Most 16-ounce hammers are about 13 inches long. Set the hammer on the floor with the head down, then set the box on top of the hammer handle, resulting in a roughly 12-inch high outlet height after the floor covering is installed.

Yellow and black hammer standing up against wooden beam to determine wall outlet or switch box height

The Spruce / Kevin Norris

Measure With a Story Pole

A story pole is a homemade tool that's nothing more than a piece of scrap two-by-four or any type of lumber clearly marked with any height you need.

You need to measure only once—when you first make the story pole. You can use a single story pole for all of your box heights, and you can even mark different heights (outlets and light switches) on the same story pole. It helps to outline both the top and bottom of the wall box on the story pole, to avoid confusion when marking studs. 

Simply stand up the pole next to a wall stud and mark the stud at the appropriate height. Make sure to mark the pole clearly. Notes like "bottom of outlet box" and "center of switch box" help prevent mistakes. When you are finished with your project, store the pole for later use or recycle it for use as a building material.

Story pole wooden beam with markings for top and bottom of wall outlet or switch box

The Spruce / Kevin Norris

A story pole doesn't even need to be a pole: It can be anything that's tall enough to indicate the height of the outlet or light switch. Use a toolbox, storage box, work light tripod, or anything that you commonly use when working.

NEC Code Guidance on Outlet and Switch Heights

Although the National Electrical Code (NEC) has many precise regulations for most aspects of residential wiring, it does not specify a height for standard wall outlets (receptacles) or for light switches.

As a result, heights are often a matter of convention or preference. However, your local electrical code is the ultimate voice in these matters, since municipalities often adopt and adapt model building codes. Be sure to check with your city's building department for any specific requirements. 

Although the NEC is silent regarding heights for box installations, electricians typically follow common professional standards, within a range generally considered acceptable. While it's best to stick to box height standards as much as possible, sometimes boxes may have to be slightly raised or lowered due to circumstances. For example, if you are finding it too difficult to drive a nail into a wood knot in one of the studs, it is permissible to move the box slightly up or down to avoid the knot.