Change or rekey · Whitby
Mailbox Lock Replacement
The little brass key for your curbside mailbox was on the same ring as the one you lost at the gym last week.
In plain words
Small outdoor cam locks take a beating over a Canadian winter: road spray, salt, and repeated freezing leave the keyway gritty and the cylinder stiff long before the metal actually fails. Replacement at that point is straightforward, since the lock is a self-contained unit that unscrews from inside the compartment door. The new cylinder goes in following its own maker's lubrication instructions from day one, and a couple of fresh keys mean the whole assembly turns smoothly again.
How the visit goesYou've just moved in, and the mailbox compartment in the lobby came with a single key the previous owner mailed back separately, or never handed over at all. As far as anyone can tell, the lock still answers to a stranger's key.
Mailbox Lock Replacement
How the visit goes
What became of the old key
The history of the missing or failing key shapes how the visit proceeds. A key still at home but simply worn down is a routine swap. A key lost out in the world, taken by someone who used to live there, or never handed over at a move-in changes the urgency, since a stranger may still be holding something that opens the compartment. A snapped key adds a short extraction step before the old lock comes out. Every version starts with the same honest question: where did the key actually go?
Taking out the old lock
With the compartment door open, the old lock is usually removed from the inside: a retaining nut is unscrewed with a small wrench or nut driver, or a spring clip is pressed free, and the whole cylinder and cam lift out as one piece. When the compartment cannot be opened this way because the key is lost, snapped, or simply unknown, picking or decoding is tried first, and the lock is drilled only when that is not practical, aimed precisely at the wafers so the plug turns and the housing releases without damaging the door around it. Either route ends the same way, with an open hole ready for the matched replacement.
A record for the building
On a job arranged through a property manager or superintendent, the visit closes with a short account of what was done: which compartments were changed, how many keys went to each resident, and whether any doors were keyed alike on request. That note is handed to whoever coordinated the work, giving the building an accurate record instead of a guess about which locks are new and which are original to the panel.
Mailbox Lock Replacement
In the van
Lock de-icer
Manufacturer-approved cylinder lubricant
Penetrating lubricant
Key cutter or duplicator
Key blanks
Mailbox Lock Replacement
What affects the quote
Coordination with a property manager
A job arranged through a building's manager or superintendent, covering compartments across several units, takes coordination and record-keeping beyond what a single household's mailbox involves.
Panel-wide versus single-compartment work
Replacing every compartment in an ageing panel at once is scoped differently from a single lock, since it involves scheduling, a resident list, and hardware ordered in volume rather than one at a time.
Corrosion or ice
A lock stiffened by rust or frozen solid needs patient freeing before it can even be assessed, which adds time compared with a lock that opens and closes normally.
What to have ready
- Is the current key lost, snapped, broken, or simply worn out?
- Has the compartment door been bent, pried at, or damaged recently?
- Do you have a lease, deed, or photo identification for the address?
Mailbox Lock Replacement: questions
QuestionsCan I get a spare key cut for a family member later?
Yes, either during the same visit or afterward, as long as it is cut from the new cylinder's combination rather than copied from an already-worn key. Cutting it while the locksmith is present avoids a second stop at a hardware store and confirms the spare works before anyone relies on it.
How many keys do I get when the lock is changed?
Two keys is standard, cut from blanks matched to the new lock and tested in the door before the visit ends. Additional keys for another household member, or for someone who collects mail while you travel, are cut on the spot if you ask, rather than needing a separate stop at a hardware store afterward.
Is it common for a previous owner or tenant to keep a mailbox key?
It happens more often than people expect, especially in a building where compartments changed hands with a single set of keys and no clear record of who returned what. Replacing the lock rather than simply asking around settles it, since a new cylinder makes any key still out there, regardless of who holds it, stop working.
Related services
- Deadbolt InstallationThe back door has a deadbolt in name only: a short bolt, a thin brass strike held by two little screws, and a jamb you can flex with your palm.
- Lock Replacement & UpgradeThe keys the seller handed over came in a sandwich bag: six unlabelled copies for two locks of different makes from different decades.
- Vintage Mortise Lock ServiceThe key turns freely in the round cylinder on the door, all the way around and back, without the bolt shifting at all.