Sound familiar?Central
- The call
- The key to the office entrance turns with almost no resistance now, and some mornings the deadbolt does not fully retract until someone jiggles the handle and tries the key again.

At closing time the hookbolt on the storefront door catches the keeper only on the second or third try, and one employee has started giving the door a shoulder to force it home.
Think of it as re-equipping a door for the job it actually does rather than swapping one lock for a similar one. A back door taking deliveries all shift needs different internals than a quiet office entrance, and a storefront's aluminum frame needs a narrow-stile lock a wood door was never built to accept. The locksmith matches lock body, cylinder and strike to the door's real prep and real use, decides with the business whether the new hardware joins an existing master key system or starts a new one, and leaves the opening cycling cleanly from both sides before the visit ends.
Sound familiar?Central
Commercial-Grade Lock Replacement · Central

Scene 1
Before any hardware is opened up, the locksmith confirms who is speaking for the business: an owner, a property manager, or a staff member the account recognizes as authorized to order and pay for the work. On a multi-tenant building this also means confirming which doors belong to which lease. This step exists for the same reason a home lockout starts with identification: a business's security is only as good as its record of who was allowed to change it, and a clear authorization at the start keeps that record clean.
Scene 2
The cylinder installed is the one agreed during the assessment: keyed into an existing master or grand-master system, set up as a new interchangeable core the business can rekey itself later, or cut to a restricted keyway that limits who can order duplicate keys. Where several doors are being brought onto one system in the same visit, cylinders are combinated so a single key or a defined set of keys operates every door that is supposed to share access.
Scene 3
Where the visit brought hardware onto a shared master or interchangeable-core system, the business now has one coherent structure instead of a different cylinder on every door. A master key opens what it is supposed to, sub-master and change keys are limited to their own doors, and the key-control log reflects exactly who was issued what. The next time a lock needs attention, whoever handles it can read that log rather than guessing at what system, if any, the previous hardware belonged to.
What shapes the quoteBuchanan Lock Services
FeesSame any hour
A grand-master system adds a layer above a standard master key, useful for a business with several buildings or departments where one senior key should open everything and mid-level keys should open only their own area. A single-location business with a handful of doors usually only needs a straightforward master and change-key structure, without the extra layer.
Yes, that is usually the first decision made. The locksmith checks whether your doors already run on a master or grand-master system, an interchangeable-core setup, or a restricted keyway, and orders replacement cylinders that slot into whichever structure you want to keep or move to. Bringing a new door onto an existing system is generally simpler than starting that door on its own.
A home lockout or residential rekey is usually about one door and one household's keys. Commercial-grade lock replacement more often involves a system, several doors, a master key structure, and sometimes a fire or exit rule the door has to satisfy, so the assessment, the hardware selected and the record kept at the end are all built around managing that wider structure rather than a single lock.
HamiltonOntario
Commercial-Grade Lock Replacement · Hamilton, Buchanan, Chedoke Park, Cootes Paradise, Corktown, Hamilton Beach, Hopkins Court, Hopkins Survey, McDonald Court, North End, University Gardens, Waterdown, West Hamilton, Westdale, Pleasant View Survey
Every square is one home in a hundred.
On-site assessment
At closing time the hookbolt on the storefront door catches the keeper only on the second or third try, and one employee has started giving the door a shoulder to force it home.
(289) 203-1527, open 24/7.
On-site assessment preferred · (289) 203-1527, open 24/7