Regardless of what kind of door you happen to be installing, you probably need to know the typical door handle height. Some models may have pre-drilled holes to let you know where the door handle belongs, but this is not always the case. How tall are door handles? Well, the answer is a little more complicated than a simple cut and dry response.
The first thing you need to know is that door handle height is always measured from the floor up. This is measured from the finished floor and not the subfloor. Be sure to account for the height of your flooring when making your measurements, particularly if you are going to be installing thick flooring such as solid hardwood flooring. This will often measure ¾-inch thick and can make a major difference in where your door handles should be placed.
All door handles, pulls, latches, and locks should be installed at least 34 inches from the finished floor. On most people, this means that the door handle will be comfortably situated around their hip area.
On the flip side of things, your new door handle should not be higher than 48 inches above the finished floor. Anything higher than this might be too inconveniently placed for comfort.
Most contractors will drill the hole for their door knobs around 36 inches off the floor.
If you want to install additional locks for security reasons, then you do not have to adhere to these usual standards. These types of locks are not considered normal operations and can easily be installed at any height. Many people prefer to install them three-quarters of the way up the door when measured from the floor.