Before you learn how to change door locks measure the space where you ll install the replacement.
How to replace a door lock and deadbolt.
You ll pay from 40 to 300 to buy a new door lock depending on design materials and whether it s a simple key in knob lock or a high end lock and handle combo with.
To change a deadbolt lock start by unscrewing the old deadbolt and removing the interior and exterior faceplates.
Measure the diameter of the holes currently cut out of your door so you can select a new door lock that fits those dimensions.
Within about an hour you can replace that internally latched front door lock with a keyed.