How Often Should I Change A Door Lock?

You should change door lock hardware every 2 to 4 years, or more regularly in certain situations.

When to Change A Door Lock

If you have purchased a new home, replace all exterior locks just as you move in. Remember that you may not have been the only one to look at the house while it was for sale, so other agents, repairmen or prospective buyers could have obtained keys. Previous occupants may also still have access to keys for the old locks.

Landlords should change apartment locks between tenants in case the keys have been copied.

Change the locks after termination of in-house help, including housekeepers, nannies and gardeners.