Locks used only for security purposes and not used for normal opera tion are permitted at any height.
Door lock rail height.
Stile width right lock.
Lower center stile width.
Access doors or gates in barrier walls and fences protecting pools spas and hot tubs shall be permitted to have operable parts of the release of latch on self latching devices at 54 inches.
The international building code has established doorknob height between 34 and 48 inches above a finished floor.
Exceptions to the rule include doors that provide egress into swimming pools or other water features.
Most homeowners split the difference and install it roughly 44 inches from the floor.
The deadbolt strike centerline should be 48 from the bottom of the frame.
Door handles pulls latches locks and other operating devices shall be installed 34 inches 864 mm minimum and 48 inches 1219 mm maximum above the finished floor.
Locks used only for security purposes and not used for normal operation are permitted at any height.
The lock strike centerline should be 40 5 16 from the bottom of the frame with the lock in relation to the strike.
Installers typically drill the hole centered 36 inches above the floor if not specifically instructed to do so differently.
Given that most contractors install the doorknob around 36 inches from the floor a deadbolt should be positioned somewhere around 42 inches to 46 inches off the floor.