Rekey or Replace Locks After Moving in Mississauga?

Moving into a home changes who controls the keys, even when every visible lock seems to work. Homeowners planning lock rekeying in Mississauga can choose more confidently by separating the key-control problem from the condition of the door hardware.

Choose rekeying when the hardware is sound

Rekeying changes the internal pin combination so old keys no longer operate the cylinder. It can be a sensible choice when the lock body, latch, strike, and finish are in good condition and the main concern is unknown copies of the old key.

Before choosing it, operate every exterior door from both sides. Note loose cylinders, a key that must be wiggled, a deadbolt that rubs the strike, or a latch that does not extend fully. Rekeying alone will not correct a sagging door or worn mechanical parts.

Choose replacement when the lock no longer fits the job

Replacement is worth considering when hardware is damaged, corroded, difficult to operate, or missing features the household needs. It also creates an opportunity to standardize finishes, add a keypad, improve key control, or use a stronger deadbolt. Door preparation still matters: even good hardware performs poorly when the bolt cannot enter the strike freely.

Make one inventory before ordering work

Walk the property and record:

• Every exterior keyed opening, including garage-to-house doors.
• Which doors should share one key and which should remain separate.
• Locks used by tenants, relatives, cleaners, or contractors.
• Patio, gate, mailbox, and outbuilding locks that may use different systems.
• Any condo or property-management rules affecting hardware changes.

This inventory prevents a common problem: updating the front door while overlooking another exterior cylinder that still accepts an old key.

Composite field lesson

The following is an anonymized composite of common move-in assessments, not a report about a named home. A family finds three exterior locks from different manufacturers. Two are mechanically sound; the third binds because its door has shifted. The practical solution is not automatically “replace everything.” It may combine rekeying compatible locks, repairing alignment, and replacing only the worn unit.

Ask for options, not a one-size answer

Useful questions include whether existing locks can be keyed alike, which components actually need replacement, what door adjustments are required, and how additional keys will be controlled. The locksmith should explain the scope before work begins.

The best choice is the one that removes old-key access, fixes real mechanical weaknesses, and remains easy for the household to operate every day.