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Person handling a lock cylinder at a workbench lined with cylinders, keys, small pin trays and blank key tags. — Commercial Rekeying, Mississauga

Commercial · Mississauga

Commercial Rekeying

You have just signed the lease on a unit the previous tenant ran for a decade. The landlord handed over three keys, the back door wears a padlock nobody can open, and nobody can say how many front-door keys are still out there.

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In plain words

A business hands out keys as people join and rarely gets every one back as people leave. Rekeying resets that count. Instead of guessing how many copies of the front-door key exist, the cylinders are repinned so only the newly cut set works, and those keys are numbered and signed for. Where turnover is steady, the locksmith can fit interchangeable cores, which let a manager swap a core with a control key in a couple of minutes when someone departs, so the reset becomes routine rather than an event. Either way you end up with a premises where the keyholder list matches the staff list.

Sound familiar?

The drawer behind the counter holds a tangle of keys with tape labels: front old, side, Dave. Some open things, some open nothing, and the hardware-store copies mean the true count drifted long ago past anything written down.

How the visit goes

Commercial Rekeying · Mississauga

How the visit goes

Person in a cap and glasses holding an old mortise lock plate against a bare slot in a wooden door edge.
  1. 1

    Reading the keys that already exist

    Before deciding anything new, it helps to understand the old. Gather every key the business can find, including the ones with faded tape labels, and the locksmith reads them against the cylinders on the walk. Some will turn out to be duplicates of each other, some will belong to hardware that was replaced years ago, and some may operate doors nobody expected them to. Hardware-store copies stand out by their blanks and by the way they wear. This reading shows how far the key count has drifted and whether an old master still exists, and it lets the new plan retire everything found in the drawer rather than only the keys anyone remembered.

  2. 2

    Pinning the master and change keys

    When the plan includes a master, each cylinder is pinned to accept two keys: its own change key and the master above it. Thin master pins sit in the pin stacks so the plug can turn at both the change key's height and the master's; master keying can also create extra, unintended combinations, so the locksmith charts the system to keep those from lining up with someone else's key, and the manager's key opens its whole group and nothing beyond it. A well-built system leaves unused combinations in reserve, so when the business adds a door or a department next year the new cylinder joins the plan without disturbing the keys already in people's pockets.

  3. 3

    A keying chart in plain language

    You leave the visit with a one-page chart that lists every opening by name, the key group it belongs to, the code stamped on that group's keys and how many were cut. It is written for the manager, not the locksmith: the stockroom is called the stockroom, and a glance shows that key group B opens the office and the cash room and nothing else. The bitting details that a locksmith needs to add a cylinder later are kept separately and securely. Pin the chart inside the manager's cupboard, keep a copy off site, and it becomes the reference every future key question is answered from.

In the van

  • Standard and restricted key blanks
  • Interchangeable cores and control key
  • Master pins
  • Commercial pin kit
  • Plug follower

What affects the quote

  1. 1

    Cylinders that need replacing

    Where a worn, corroded or low-grade cylinder is better replaced than repinned, the new part is added for that door alone, and the locksmith points it out before the work begins.

  2. 2

    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.

  3. 3

    Restricted keyway

    Moving to a patented, restricted keyway means new cylinders or cores rather than a repin of the old ones, and the blanks themselves carry a higher price than standard keys.

Same fees day, night or weekend.

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Commercial Rekeying: questions

Advice · (289) 805-2659

What is the difference between rekeying a business and replacing its locks?

Rekeying keeps every lock on the door and changes only the pins inside the cylinder, so a new key works and the old ones stop. Replacing swaps the hardware itself. Commercial cylinders are made to be repinned many times, so rekeying suits any lock in sound condition and leaves the levers, trim and door untouched. Replacement is chosen door by door for cylinders that are worn, corroded or too light for what they protect.

What condition does a lock need to be in to be rekeyed?

It needs a plug that rotates without catching, pins that return under their springs, and a face free of heavy corrosion or cracks. Most commercial cylinders in daily use pass easily. Ones that are stiff, gritty or green with salt bloom can sometimes be cleaned and repinned, and the locksmith will say when a replacement for that door is the better value; the rest of the doors are rekeyed regardless.

We lost a master key. Does the whole building need doing?

Only the cylinders that master opened, which the keying chart identifies. If the lost key was the top master, that is every lock in the system; if it was a departmental master, it is that department's doors. Where no chart exists, the locksmith reads the cylinders first to establish what the key reached. The remaining doors, and any keys that never opened them, are left exactly as they are.

Commercial Rekeying near you

Peel, Ontario

Mississauga information

Town
Mississauga, Peel, Ontario
In business
31 years
Hours
Open 24/7 · nights, weekends and holidays, same fees
Visits
On-site assessment preferred. Request a visit or call.

What the census means at the door

38%

Homes of every age. About 38% of homes in Mississauga were built in 1980 or earlier, according to the 2021 Census.

In neighbourhoods with a mix of older and newer homes, the finishes on the doors vary widely: aged brass, satin nickel, matte black. A locksmith serving such an area keeps a range of finishes so replacement hardware suits each house.

37%

Single-detached houses make up about 37% of homes in Mississauga (2021 Census).

Where housing is mostly apartments and condos, mailbox locks are a regular call. A worn or lost mailbox key is a small job that a locksmith handles alongside the suite door, and the new lock comes with fresh keys cut on the spot.

Source: Statistics Canada, 2021 Census of Population

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Request a visit

You have just signed the lease on a unit the previous tenant ran for a decade.

Call now · open 24/7(289) 805-2659
  • On-site assessment preferred
  • Same fees day, night or weekend
  • 31 years in business