Who this is for: A homeowner or tenant who no longer knows who may possess a house key.
Rekey, replace or upgrade: how to decide
Rekeying is enough when the lock is in good condition and the only problem is that someone else might have a working key. Replacement makes sense when the lock is worn, stiff or low quality. An upgrade to a high-security or restricted-key cylinder makes sense when keys have gone missing more than once, when many people need access, or when the lost key was attached to your address. Whatever you choose, think about every door the lost key opened: front, side, garage-to-house, and sometimes a mailbox or storage locker.
A practical checklist
- Write down which key was lost and which doors it may open.
- Consider whether the key was attached to an address, identification, or garage remote.
- Ask a locksmith to inspect the cylinder, strike alignment, and deadbolt condition.
- Request a written recommendation comparing rekeying with replacement before approving work.
Common mistake to avoid
A new decorative handle does not automatically improve security if the strike, frame, or cylinder remains weak.
What is different in Toronto
Busy Toronto households often share keys with cleaners, contractors, dog walkers, relatives, or building staff; the exposure history matters more than the key's replacement cost.
Sorting out the real risk
The danger of a lost key depends on what else came with it. A key on its own in a park is a small risk. A key with an address label, a fob, a garage remote or a car key ring is a bigger one, because whoever finds it can also find the door. Think about where it was lost, how long ago, and whether it could be traced to your home.
The middle option people forget
Between doing nothing and replacing every lock there is rekeying: the technician changes the pins inside the cylinders you already own. That usually costs less than new hardware and handles the lost-key problem completely. Replacement makes more sense when the lock is old, sticky, damaged or already loose in the door.
What else to do the same day
Check that the deadbolt throws fully into the frame, that the strike is screwed into the stud and not just the trim, and that every entrance you own is on the same plan. If a garage remote was on the ring, reset the opener code as well. A technician can do all of this in one visit, so ask for a written recommendation before approving work. Details on the process are on our residential locksmith page.
Need help with home lock rekeying? Better Call Locksmith Toronto operates 24/7 from 901 Yonge Street. See our residential locksmith service page or call (416) 240-0593.