

Commercial · Toronto
Commercial Rekeying
The drawer behind the counter holds a tangle of keys with tape labels: front old, side, Dave.
In plain words
Changing the locks answers today's question; key control keeps it answered. During a commercial rekey the new keys are stamped with a serial code rather than the business name or address, so a dropped key tells its finder nothing. Each key is logged against the person who receives it, and the old keys are collected and cut up on the spot. For premises that want copies kept out of hardware stores, the cylinders can be set up on a restricted keyway, with blanks released only against a signed authorization. What you end up with is a set of locks whose keys you can account for years later.
How the visit goesA break-in overnight took the cash float and a staff member's bag with her work keys inside it. The glass is being replaced this morning, but the key that opened the door yesterday will still open it tonight unless the cylinders are changed.
Commercial Rekeying
How the visit goes


The state of the cylinders and the doors
A cylinder about to be repinned is examined the way a mechanic looks over a part before rebuilding it. The plug should turn smoothly with the right key, the pins should spring back cleanly, and the face should be free of the green bloom that salt spray leaves on storefront hardware after a few winters. The locksmith also checks how the door closes: a strike that no longer lines up, a closer that slams, or a deadlatch that fails to catch will keep a freshly rekeyed door from locking properly. Most cylinders pass and are repinned; a worn or corroded one is pointed out so you can choose a replacement for that opening.
Repinning a standard cylinder
The cylinder is taken off the door and its plug is slid out with a follower, a small tube that holds the top pins and springs in place so nothing scatters. The old bottom pins are tipped out, and a new combination is chosen from the pinning records so it does not collide with any other key in the plan. Fresh pins of the matching depths are dropped into each chamber, the plug goes back in, and the new key is tried: it should turn as smoothly as if the lock were new, and the old key should stop dead. The cylinder is then refitted and adjusted so the cam or tailpiece throws the bolt fully.
Keys counted into named hands
Alongside the chart comes a key register: each key's stamped code, the person it was issued to, the date, and a line for the date it comes back. Filling it in as keys are handed out on the first morning takes ten minutes and pays off at every departure afterwards, because the question becomes 'return key A-07' rather than 'did she have a key?'. Spare keys are counted too and kept somewhere locked rather than in the drawer where the old tangle lived. When the register and the chart agree with the keys on the hook, the business knows exactly who can open it, which is the whole point of the exercise.
Commercial Rekeying
In the van
Plug follower
Dry graphite or PTFE lubricant
Rekeyable padlocks
Interchangeable cores and control key
Code key machine

Commercial Rekeying
What affects the quote
Several locations
Rekeying two or three sites onto one keying plan means travel between them and a chart that spans buildings, quoted per site plus the shared design work.
Mix of lock types
A key-in-lever cylinder, a storefront mortise cylinder, a back-door rim cylinder and a padlock take different handling, though several full-size formats can share one pin kit for the same key system; a premises with a wide mix of cylinder types and brands still takes longer than one with one.
Doors out of alignment
A door whose cam, strike or closer needs adjusting so the freshly rekeyed cylinder throws the bolt fully is corrected during the visit, and that adjustment is a separate item.
What to have ready
- Which staff need to open which doors on a normal day?
- Do you want one key for everything, or separate groups with a master?
- How many doors, padlocks and cabinets do you want included, and where are they?
Commercial Rekeying: questions
QuestionsWill rekeying affect our alarm system or card readers?
Mechanical rekeying leaves electronics alone: alarm panels, card readers and keypads keep their codes and credentials. What changes is the list of people holding keys, and it is worth updating the alarm company's keyholder list and retiring the codes of anyone who has left at the same time, since keys and codes usually walk out together. Where a door has both a card reader and a keyed override, the override cylinder is rekeyed with the rest.
How long should we set aside for a commercial rekey?
It depends on the count and the mix. A shop with a front door, a back door and a stockroom is a short visit; an office suite with a dozen lever sets, a master key plan and a mailbox takes a good part of a day. Interchangeable cores are the shortest of all, since they are swapped rather than repinned on site. The locksmith gives a time estimate at the assessment, once every cylinder has been counted.
Can the aluminum storefront door on our unit be rekeyed?
Yes. The narrow stile of a storefront door houses a screw-in mortise cylinder secured from the edge, and it unthreads, is repinned and screws back in like any other. What the locksmith watches is the cam: it has to suit the hook or deadbolt mechanism inside the door and sit at the correct depth, or the bolt throws short. Weather-facing cylinders showing salt wear are pointed out so you can decide on replacement.
Related services

- Access Control InstallationThe back door of the shop runs on one key, and by now it lives on six different rings: yours, two managers, a cleaner, a supplier who restocks early, and a keyholder nobody quite remembers approving.
- Panic & Exit HardwareThe crossbar on the loading-dock door barely returns anymore.
- Commercial-Grade Lock ReplacementAn inspection report flagged the rear exit as needing hardware that opens with one motion and no key, and that door currently has an ordinary keyed knob on the inside.