What is the standard height for exterior doors in residential construction?

In residential construction, the standard height for exterior doors is typically 6 feet 8 inches, or 6'-8". This height has been established as a common standard and is widely used across the industry for both aesthetic and functional reasons.

A door height of 6'-8" provides sufficient clearance for most individuals and accounts for standard headroom. It allows for the installation of hardware, such as door knobs and locks, at a height that is easily accessible while still maintaining a pleasing proportion to standard ceiling heights in homes. Additionally, many pre-hung doors and door frames are manufactured to this standard dimension, making it easier for builders and contractors to work with readily available materials.

Other height options like 6'-6", 7'-0", and 7'-6" are not commonly used in residential construction for general exterior doors. While they may be utilized in specific circumstances, such as custom builds or architectural designs, they do not represent the industry standard that is 6'-8".