Losing your keys is more than an inconvenience — it is a security risk because anyone who finds them could potentially access your property. If your keys are genuinely lost (not just misplaced), you should rekey or change your locks as soon as possible. A mobile locksmith can rekey all your locks so the old keys no longer work, usually within an hour for a standard home. In the meantime, secure your property by other means.
What to do right now
- 1
Retrace your steps thoroughly
Check everywhere: pockets, bags, car seats, between couch cushions, at your workplace, gym, or any venue you visited. Call businesses you visited and check lost property. Check with friends or family you spent time with.
- 2
Assess the security risk
If your keys were lost in a location where someone could identify your address (e.g., a labelled keyring, keys lost near your home, or keys stolen), the risk is high and you should change or rekey your locks immediately. If lost in an anonymous location with no identifying information, the risk is lower but rekeying is still recommended.
- 3
Secure your property in the meantime
If you can get inside via a spare key or with help from a housemate, lock up using internal deadbolt thumbturns and chain locks. If you are completely locked out, call an emergency locksmith for both entry and rekeying.
- 4
Call a locksmith to rekey your locks
A locksmith can rekey all your locks so the lost keys no longer operate them. This is faster and cheaper than replacing all locks. The locksmith will provide you with a new set of keys. If your car key was also lost, an automotive locksmith can cut and program a replacement.
- 5
Prevent future incidents
Install a key safe outside your home with a spare key. Use a Bluetooth key tracker (like Tile or Apple AirTag) on your keyring. Consider upgrading to a smart lock with keypad or phone access so you are never dependent on a physical key.
When to call an emergency locksmith
- ⚠️You have lost your house keys and cannot get inside
- ⚠️Keys were lost or stolen in a location where your address could be identified
- ⚠️You need all locks rekeyed urgently for security
- ⚠️Your car key was lost and you need a replacement cut and programmed
- ⚠️You lost keys to a business or commercial property
- ⚠️Keys to a safe, padlock, or security gate have been lost
How much does it cost?
Rekeying a standard residential lock costs $65–$150 per lock during business hours. A full house rekey (4–6 locks to one new key) typically costs $250–$600. After-hours rekeying adds $50–$120 to the total. If locks need replacing rather than rekeying, expect $150–$400 per lock. Replacement car keys cost $100–$450 depending on the vehicle and key type. Always request an itemised quote.