Sound familiar?Greenhill
- The call
- The mail slot on the shop's exterior wall has a small compartment lock that a former employee still has a key to, months after they left. Nobody on staff can say with any confidence who else might hold a copy.
The little brass key for your curbside mailbox was on the same ring as the one you lost at the gym last week. The lock itself is fine, but whoever finds that ring now has a way into your mail as well.
In plain words
Not every mailbox in front of a house belongs to the person collecting from it, and this service is scoped around that distinction. A private curbside box, a house's built-in door slot, and one compartment in a condo or apartment lobby panel are all fair territory, matched to a new lock once the old key situation stops working. A mailbox installed for a whole street by the postal operator is different property, with its own locks and keys handled directly by that operator rather than by a visiting locksmith.
Mailbox Lock Replacement · Greenhill
How the visit goes
Scene 1
Reading the cam
The small metal arm on the back of the cylinder, called the cam, is what actually engages the door frame when the key turns, and it comes in more shapes than people expect. Some are straight, extending directly from the centre of the cylinder, while others are bent, or offset, to reach a latch set higher or lower than the centreline. Length matters as much as shape: a cam that reaches too far scrapes the compartment wall, and one that falls short never catches the frame at all.
Scene 2
Fitting a matched replacement
The replacement cylinder is chosen to the length and diameter measured earlier, with a cam selected for the same throw and orientation as the one just removed. It is slid into the compartment door from the front, the cam is set in the same position the old one held, and the retaining nut or clip is tightened from inside. Before anything is called finished, the door is closed and the key turned several times, checking that the cam swings clear going in and catches the frame firmly coming out.
Scene 3
Keeping the new lock turning smoothly
A small mailbox cylinder benefits from the same care as a house lock: whatever lubricant that cylinder's own maker specifies, often dry graphite or PTFE-based, worked into the keyway once or twice a year keeps grit and moisture from building up inside. Wiping road salt off the key itself in winter, rather than letting it ride into the keyway, is a small habit that spares the new lock the slow decline the last one went through.
In the van
- Key cutter or duplicator
- Nut driver and screwdrivers
- Wafer tumbler pick set
- Key blanks
- Lock de-icer
What shapes the quoteAshburnham Lock Experts
- Access to the compartment
- A ground-floor mailbox or a lobby panel with easy entry is straightforward to reach. A building requiring a call to reception, an escort, or a separate access arrangement adds a step before work can start.
- 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.
- Whether drilling is needed
- Most old locks come out with a wrench or a screwdriver from inside the compartment. A seized or damaged cylinder that has to be drilled adds a step, along with the new lock needed to replace it.
FeesSame any hour
Questions we hear most
Can 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.
What should I bring or have ready when I book the visit?
Have the address and compartment or unit number ready, along with whatever ties you to it: a lease, a deed, or photo identification. Mention whether the key is lost, snapped, or simply worn, whether the mailbox sits alone or in a shared panel, and whether a property manager needs to be looped in. That handful of details lets the locksmith bring the right hardware on the first visit.
I just moved in and have no key at all. Can you still help?
Yes, and it is a common reason for this visit. Ownership or a lease showing the address, plus photo identification, is generally enough to confirm the compartment is yours to change. The old lock is opened without a key using the same techniques used elsewhere, then swapped for a new one, so whoever held the previous key no longer has any use for it.
Change or Rekey Locks
- Deadbolt InstallationYou bought a keypad deadbolt online and pulled the old one off, only to find the hole in the door is a different size and the…
- Lock Replacement & UpgradeThree teenagers, a dog walker, a cleaner and one house key that keeps going missing.
- 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.
- Smart Lock InstallationYour mother still lives on her own, and the personal support worker, the pharmacy delivery and two siblings all need to get in on…
- Gate & Building Entry LocksA neighbour mentions, in passing, that the key from three tenants ago still lets him into the building's front door.
Greenhillinformation
PeterboroughOntario
Mailbox Lock Replacement · Peterborough, Cavan Monaghan, Otonabee-South Monaghan, Ashburnham, Byersville, Claraday, Coldsprings, Collison Heights, Downers Corners, Jackson Heights, Kawartha Heights, Westmount
- Town
- Greenhill, Peterborough
- In business
- 27 years
- Hours
- Open 24/7
- Nights, weekends and holidays, same fees
- Phone
- (249) 494-7410
- Visits
- On-site assessment preferred. Request a visit or call.
2021 census: what it means at the door
Every square is one home in a hundred.
- 64 in 100 homes · older homes
- 57 in 100 homes · mixed housing
- About 64% of homes in Peterborough were built in 1980 or earlier, according to the 2021 Census.Older homes tend to have had many hands on their doors: owners, tenants, tradespeople, family. A locksmith visiting such a house pays attention to who holds keys now, and rekeying or a keyed-alike set often matters more than any new hardware.
- Single-detached houses make up about 57% of homes in Peterborough (2021 Census).In a mixed area, a locksmith's advice bends to the building. For a house, the side door and garage entry get attention. For an apartment, the suite door's closer, strike and viewer do. The principle is the same: look at how the door is actually used.
Nearby
On-site assessment
Request a visit.
The little brass key for your curbside mailbox was on the same ring as the one you lost at the gym last week.
(249) 494-7410, open 24/7.