If You just got the keys to a house you bought.
Then Rekey every exterior door to one new key.
The seller, their agent and any tradesperson who held a copy are now locked out, and you carry a single key. Lock Rekeying

A lockout does not check the time, so neither do we. Households and businesses in Northcrest can reach a working locksmith at any hour, and the fee for the visit stays the same whenever you call. We bring the same van and the same care whether the call comes at noon or long after dark. The same crew covers Uplands, Arva and Bryanston.
Same fees day or night · Northcrest
Pick the closest, or call (226) 271-6061
Lockout ServicesLocked out of a home or business, a key snapped in the lock or a lock that has seized: entry with the least damage…
Change or Rekey LocksNew keys for the locks you have, or new locks where the hardware has worn out: rekeying, replacement, deadbolts, smart…
High Security LocksCylinders and deadbolts built to resist picking, bumping and drilling, keys that cannot be copied without…
Commercial LocksLocks for shops, offices and buildings: rekeying at turnover, commercial-grade hardware, exit devices, master key…Winter is part of how we work in Northcrest. Doors swell and shrink, frames shift, keys snap in cold cylinders, and salt finds its way into hardware. We choose lubricants that stay fluid in the cold, set strikes with the seasons in mind, and show you the small habit that stops a key from freezing in the lock.
Nearby London, Lucan Biddulph, Middlesex Centre, Broughdale, Calamity Corners, Masonville, Orchard Park, Sherwood Forest, Stoneybrook, University Heights and White Hills
Locks for the house you actually live in.
27 years in business · Call us about stronger locks: (226) 271-6061
Northcrest
Below is the full menu of lock and key work available in Northcrest, written for people who are not locksmiths. Each entry says what the service is, when it makes sense, and roughly how a visit unfolds, so you can arrive at the door already knowing what the technician is going to do and why.

Safe Installation & Servicing, Car Lockout Service, Seized & Jammed Lock Opening, Smart Lock Installation…
Tap a situation. The answer opens here.
If You just got the keys to a house you bought.
Then Rekey every exterior door to one new key.
The seller, their agent and any tradesperson who held a copy are now locked out, and you carry a single key. Lock Rekeying
If You are renting, and the landlord says the locks were never changed.
Then Ask the landlord to have the locks rekeyed.
Tenants generally need the owner's agreement, and most landlords are glad to do it when asked plainly.
If A tenant moved out and did not return every key.
Then Rekey before the next tenant arrives.
It keeps the same hardware and closes the gap before viewings start. Lock Rekeying
MiddlesexOntario
Every square is one home in a hundred.
Treat it as two exposures. The house key is handled by rekeying every lock it fits. The remote is handled at the garage door opener: its memory is erased so every old remote stops working, and new remotes are programmed. If the car had your address on its paperwork, do both before anything else. A locksmith can rekey the doors and, on many openers, clear the remotes during the same visit or show you the learn button on the motor unit.
Possibly, if the key was part of the cause. A worn or bent key lifts the pins short of the shear line, so the plug binds even in a healthy cylinder, and a copy made from that key repeats the wear. A key cut from the code or from a crisp original is the fix. If the lock was also gritty or the door had moved, the new key would have eased things without settling them, which is why the locksmith checks all three.
You can, and it solves being without a key. It leaves the lost one working, though, which is the half of the problem that keeps people awake. Rekeying takes about as much effort as a trip to a hardware store counter and ends with a new key in your hand and the old one retired. If the key was mislaid somewhere it will never be found and named nothing, a plain copy is a fair choice.
It is a good moment for it. Nobody knows how many copies of a previous owner's key exist, so pinning the new bolt, and the rest of the exterior doors, to one fresh key retires all of them at once. Lock manufacturers list a move as one of the main reasons to rekey. You come away with a known number of keys, each tested in every door it is meant to open.
On-site assessment preferred · (226) 271-6061, open 24/7