Should You Rekey or Replace Locks After Moving?

When you move into a new home, you rarely know how many copies of the old keys exist. Previous owners, relatives, cleaners, contractors, and neighbors may have had access at some point. That uncertainty is enough reason to restore key control even if the locks look fine.

Rekeying is the simplest answer when the hardware is serviceable. It changes which key operates the cylinder without forcing you to replace a lock that still works well.

Choose rekeying when the lock turns smoothly, the latch lines up, and the door hardware is otherwise in good shape. If the lock family is compatible, one key can often be made to work across multiple exterior doors.

That can be especially useful for new homeowners who want a clean slate but do not want to replace every deadbolt and knob on day one.

• Exterior doors that still operate smoothly
• Garages or side entries with compatible cylinders
• Detached structures with working but untrusted keys

Replace locks that are damaged, worn out, loose, corroded, misaligned, or missing the security features you now want. A new key will not solve a bad strike, a warped door, or a cylinder that already fails under normal use.

Replacement can also make sense when the current hardware is obsolete or incompatible with the keying plan you want. In that case, it is better to choose parts that fit the door correctly than to force a compromise.

1. 1
   Inventory every entry

   Walk the property and list front, side, back, garage, gate, mailbox, and detached-structure locks that matter.

2. 2
   Test each lock

   Check whether the lock works cleanly when the door is open and when it is closed.

3. 3
   Separate the good from the bad

   Keep serviceable hardware in the rekey group and move damaged or unreliable hardware into the replacement group.

4. 4
   Decide the key plan

   Ask whether the compatible locks can all share one key and how many copies you actually need.

This approach avoids paying to replace hardware that still has useful life in it.

Test every new key before the technician leaves. Keep a record of which doors were rekeyed or replaced, and store any spare keys securely rather than tagging them with your street address.

If you bought the home recently, it is also a good time to look at hinges, door alignment, and weather sealing so the new lock is not compensating for a frame problem.