Sound familiar?Welland
- The call
- Your roommate moved out last weekend. Rent is settled, the room is empty, and the key is still on their ring. You trust them, but the lock on your front door should answer to the people who actually live here.

The previous owners left a coffee tin of keys on the counter, some labelled, most not. The house is yours now, but you have no idea how many copies were cut over the years or who still has one in a drawer somewhere.
Rekeying is a change made inside the lock rather than to the lock itself. Many keyed cylinders hold a row of small pins that have to sit at exactly the right heights before the plug will turn, set by the cuts on your key, though some residential cylinders use a side-locking bar instead of pins. A locksmith slides the plug out, removes the pins, and loads a new set matched to a freshly cut key. Reassembled, the lock looks and feels exactly as it did, except that the new key turns it and every key cut before today does not. Your hardware, finish and door stay as they were.
Sound familiar?Welland
Lock Rekeying · Welland

Scene 1
Whether several doors can share one key depends on the cylinders, not the number of doors. Each lock has a keyway, the profile a key must match to enter the plug, and only cylinders with the same keyway can be pinned to the same key. The locksmith looks at the face of each cylinder and the profile of each existing key to sort the house into families. Most homes carry one or two of the common residential keyways, sometimes with an odd one on a side door or a padlock. Anything from a different family is noted so you can decide whether to swap that cylinder for a matching one and bring the door onto the house key.
Scene 2
Keying doors alike is the same operation repeated with the same new key. Once the first cylinder is pinned and proven, the locksmith removes the second, follows the plug out, and loads bottom pins to the identical depths so the same key operates it, and so on around the house. Where a door carries a cylinder from a different keyway family, that cylinder is exchanged for a matching one in the same finish and then pinned to the house key. The result is one key on your ring that turns every exterior door, with the individual locks unchanged in appearance and function.
Scene 3
After a rental unit is rekeyed, the incoming tenant receives their keys, the landlord keeps a copy as the tenancy rules expect, and the number issued is written on the move-in record so the count at move-out is easy to check. The former tenant's keys are retired. Where a building has several suites, the locksmith can keep each on its own key while the shared entry stays on a common one, and the note of which key belongs to which door becomes the start of a keying chart. That chart is what makes the next turnover a matter of one cylinder rather than a guessing game about who has what.
What shapes the quoteMaple Park Locksmith Co.
FeesSame any hour
No. The work happens inside the cylinder, so the bolt, handle, finish and strike plate stay exactly as they are, and nothing new is cut into the door. The only visible change is the key in your hand. If a cylinder does have to be replaced, because its keyway is incompatible with the others or it has worn out, the locksmith picks one in a matching finish so the door keeps a consistent look.
Yes, with your landlord's agreement, which is what the tenancy rules here expect before a tenant changes a lock. Most landlords are glad to consent when a key has gone missing or a former roommate has moved out, and the locksmith will want to hear that the landlord knows and will be holding one of the new keys. The rekey itself runs the same as for an owner, and a short note listing the doors done is handy to pass to the landlord.
Rekeying keeps your existing deadbolt or handle set and gives it a new key, commonly by changing the pins inside, though some cylinders reset a different way. Replacing removes the whole lock or cylinder and fits new hardware. Rekeying suits locks that are in good condition and simply need a fresh key. Replacement is the better call for hardware that is worn or damaged, built to a low grade, on a keyway the other doors cannot share, or due for a change of style or a keypad.
NiagaraOntario
Lock Rekeying · Pelham, Crowland, Maple Park, Stop 19, Welland South, Fonthill, Kunda Park, Fenwick, Ridgeville
Every square is one home in a hundred.
On-site assessment
The previous owners left a coffee tin of keys on the counter, some labelled, most not.
(365) 364-0824, open 24/7.
On-site assessment preferred · (365) 364-0824, open 24/7