What exactly is the difference between a residential lock rekey and replacement? Well, they both are are exactly what they appear to be! Residential lock replacement is recommended when there exists a broken lock beyond repair, when you want to upgrade to a more secure lock, or you want to replace a lock for visual reasons. However, if you have a lock that is perfectly intact, but there are unaccounted for keys that keep you from trusting in the security of your home, assets, and family, then house lock rekey is an appropriate service. A professional residential locksmith can come to your home, and replace the tumblers of the lock cylinder without actually replacing the lock itself. Once we do this, we will provide you new keys that will be the only keys that will open the locking mechanism. This is especially useful for landlords and new homeowners who have no idea how many keys might exist to a fully functional lock.