Maple Guard Security Mississauga Service Team
Local locksmith team
Jul 22, 2026 3 min read
You just signed a commercial lease on Hurontario Street, or maybe a unit off Burnhamthorpe in the heart of Mississauga's business district — and between coordinating the movers, ordering signage, and setting up your point-of-sale system, rekeying the locks is the kind of task that quietly falls to the bottom of the list. That's a mistake worth correcting before opening day.
This checklist is built for Mississauga business owners who want to walk into their new space knowing exactly who holds a working key — and who doesn't. We'll cover what to ask a commercial locksmith about rekeying, mortise lock upgrades, master key systems, and access control so nothing gets overlooked in the rush to open your doors.
Frequently asked questions
What does rekey a lock mean for a commercial tenant versus a homeowner?+
The mechanical process is the same — a locksmith replaces the pin tumblers inside the lock cylinder so old keys no longer work — but the stakes and complexity differ significantly in a commercial setting. A business tenant may be dealing with a master key hierarchy involving the building owner, previous staff, and contractors, all of whom may hold keys that still work on the old configuration. A commercial locksmith will map out that hierarchy, rekey each cylinder to a new configuration, and help you build a key control system that tracks who holds every copy going forward. Homeowners rarely need that level of documentation; business owners almost always do.
Do you need to rekey a new lock if the landlord already changed it before your move-in?+
In most cases, yes. Unless the landlord can provide a documented key-issuance record showing the cylinder is factory-new and no key has been cut to it, a rekey adds a layer of certainty you cannot get any other way. Landlords often reuse lock bodies between tenancies and simply have a new key cut to the existing pins — which leaves any previously cut key functional. A qualified commercial locksmith can verify the cylinder's condition and rekey it on the spot, giving you a clean start with full key accountability from day one.
How much does commercial rekeying cost in Mississauga?+
The final price depends on several factors: the number of lock cylinders on the property, the type of hardware (a mortise lock involves more labor than a simple cylindrical deadbolt), whether restricted keyway components are needed, the time of day the work is scheduled, and travel distance for a mobile locksmith. Maple Guard Security confirms an exact price before any work begins, so there are no surprises on the invoice. Call (289) 779-3062 to describe your space and get a clear quote.
When should I consider replacing a mortise lock instead of rekeying it?+
Rekeying is the right call when the lock body itself is in good mechanical condition — the bolt extends and retracts smoothly, the cylinder turns without binding, and the strike plate is properly seated. Replacement makes more sense when the mortise lock shows visible wear, when the door or frame has been repaired after a break-in attempt, when you want to upgrade to a higher security grade than what's currently installed, or when you're adding electronic access control that requires a specific door prep the existing hardware can't accommodate. A skilled commercial locksmith will assess all of these factors during the initial inspection and give you an honest recommendation before any work starts.
