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What does it mean when lost keys had my address on the tag?

It means whoever finds the keys can tell which door they open. Keys lost with anything showing your address should be treated as keys in a stranger's hands, and the usual fix is to have the locks rekeyed so the lost keys no longer work.

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Finding the keys again later does not change this. Once the keys have been out of your hands with the address attached, you can't know who handled or copied them, so the lock is what gets changed, not just the key ring.

Why the address on the tag matters

A key on its own tells a finder very little. A key with an address tag tells them exactly where it fits. That pairing is why a locksmith treats this differently from keys lost with nothing on them.

A lock works for any key cut to its pattern, and it has no way of knowing who is holding that key. Getting the keys back does not tell you whether a copy was made in between. Changing the lock is the only way to make the lost keys stop working.

The usual answer is rekeying: the lock is altered so the old keys no longer turn it and new keys work instead. Where a lock cannot be rekeyed, the cylinder is replaced. Either way you end up with locks that only your current keys open.

What you can check yourself

  • List everything on the ringWrite down every key that was on it: front and back doors, garage, mailbox, shared entry, office and car. A car key on the ring turns one job into two, so tell the locksmith about everything.
  • Retrace your stepsCheck the places you were, and ask whether anything was handed in. It is worth a quick look, but it does not replace changing the locks if the address was on the tag.
  • Look for spare keysFind out what other keys exist and who in the household holds them. The locksmith can bring every door onto one key, so it helps to know how many sets are around.
  • Gather proof you live thereA driver's licence with the address, a lease, or a utility bill is what the locksmith will ask to see. Having one to hand keeps the visit short.
  • Note which locks were on the ringThink about whether the keys also covered a mailbox, a shared building entry or a storage unit. Those locks can be dealt with on the same visit.

When to call a locksmith

Call as soon as you know the keys are gone and the address was on them. You do not need to wait and see whether they turn up. If you are also locked out, the locksmith checks identification and proof that you are entitled to enter the home or vehicle before opening anything. That check protects you, and it is also why this page can't be used as a how-to. To arrange a visit with an independent locksmith, call (866) 690-5848.

The estimate is free. The locksmith looks at your locks, gives you the price, and work starts only once you agree it. The price depends on factors like the type of lock, how many doors are involved, the time of day, any parts needed, and whether keys have to be cut or programmed. Locksmith licensing varies by state: some states license or register locksmiths, others leave it to cities or counties, and some do not regulate the trade. Check with your own state or city if you want to confirm what applies to you.

What the locksmith will do

  • Rekey the locksThe locks are rekeyed so the lost keys no longer work. New keys are made to fit.
  • Replace cylinders where neededWhere a lock cannot be rekeyed, the cylinder is replaced, so the lost keys are of no further use.
  • Bring every exterior door onto one keyInstead of a separate key for each door, all your exterior locks can be set to work with a single key.
  • Cut new keys for the householdNew keys are cut for everyone who needs one, so the household is covered in a single visit.
  • Deal with mailbox and shared-entry locksIf those keys were on the same ring, those locks can be dealt with on the same visit.

Related questions

If I find the keys again, do I still need the locks changed?
A key found again later does not undo the loss. You cannot tell whether the keys were out of your sight with the address attached, or whether a copy was made. Changing the locks is what settles it.
Do I need new locks, or is rekeying enough?
Rekeying is usually enough, because it makes the old keys stop working while keeping the existing hardware. Where a lock cannot be rekeyed, the cylinder is replaced. The locksmith looks at each lock and tells you which applies.
My car key was on the ring too. What happens?
That makes two jobs: one for the house locks and one for the car key. Mention everything that was on the ring when you call so both can be planned together.
How much will it cost to have the locks changed?
It depends on the lock type, how many doors, the time of day, any parts, and whether keys must be cut or programmed. The estimate is free, and the locksmith gives the price before any work starts.
What will the locksmith need from me?
Identification and proof that you are entitled to the property, such as a licence showing the address, a lease or a utility bill. A neighbour or manager who can confirm it also works.

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