A lock can look secure while old keys are still in circulation. Rekeying changes the lock’s internal pins so old keys no longer work, while a new key operates it. It can be a practical way to manage access without replacing a compatible lock. Consider rekeying after a move, when a key goes missing, or when someone who had a key should no longer enter. The right timing depends on who may have a copy and how much risk you’re comfortable accepting.
After Moving Into a Home
Rekey the exterior locks soon after you take possession of a new home. Previous owners may have given keys to relatives, neighbors, contractors, or cleaners, and you may not know whether every copy was returned. Changing the lock’s key makes those old copies unusable. Until the work is done, avoid assuming that keys handed over at closing account for every key that was made.
Check all entry points, including front and back doors, side doors, and a door between the house and garage. If several compatible locks use different keys, ask whether they can be rekeyed to one new key for convenience. A locksmith can inspect the locks and explain whether rekeying is suitable or if a worn or damaged lock should be replaced instead.
When a Key Goes Missing
A missing key does not always mean someone has your address or plans to enter, but it does create uncertainty. Think about where you lost it and whether it was attached to anything that identifies your home or business. If a key ring with an address tag disappears, or a key is lost near the property, rekeying promptly can reduce the chance that the key will be misused.
If you cannot rule out unauthorized access, secure the property and contact a locksmith about rekeying. For a lost key that was clearly separated from identifying information, you may judge the risk differently, but do not rely on that judgment if there are other concerns. Rekeying makes the missing key ineffective; simply making another copy does not.
When Access Needs to Change
Rekey when a person who had a key should no longer have access and you cannot confirm that the key was returned. This can apply after a roommate moves out, a household arrangement changes, or a contractor or service provider no longer needs entry. Keep the decision focused on access: if an old key might still work, changing the lock’s key is a direct way to close that gap.
For a business, review who holds keys when staff or responsibilities change. Collecting keys is useful, but it may not be enough if copies were made or you are unsure where they went. Rekey affected doors and update your key records. If several people need access, assign keys carefully and limit distribution to the doors each person needs.
Rekeying or Replacing the Lock
Rekeying changes which key works without changing the lock hardware, provided the lock can be rekeyed and is in good condition. It is often appropriate when the main issue is control over existing keys. Replacing a lock may make more sense if the hardware is damaged, unreliable, outdated, or incompatible with the key setup you want.
Before scheduling service, list the doors that need attention and note any locks that stick or fail to latch. Ask the locksmith to check whether those locks can be rekeyed and whether you can use one key for multiple compatible locks. Lancaster Keyworks can help assess your options and rekey eligible locks in Lancaster, PA.
Rekeying is worth considering whenever someone may still have a working key and should no longer have access—especially after a move, a lost key, or a change in household or staff. Check each entry point and the condition of its hardware before deciding. If you’re unsure which locks need attention, contact a local locksmith to discuss your situation.