Change or rekey · London
Lock Rekeying
Every copy of your house key seems to work a little differently.
In plain words
Rekeying is really about knowing who can open your door. Over the life of a home, keys are lent to trades, handed to neighbours for the holidays, given to a cleaner or a dog walker, and copied at the hardware store. Nobody keeps a list. Rekeying draws a line: from today, the only working keys are the ones counted into your hand. Good practice afterwards is simple, and a locksmith will suggest it: know how many keys exist, know who holds each one, tag them with a colour or code rather than the address, and rekey again whenever a key leaves your control.
How the visit goesThree months of renovation are finally done. The kitchen looks wonderful, and along the way a general contractor, a tile installer, a plumber and an electrician each carried a key to your front door at one point or another.
Inside the lock
What a rekey changes
01
The lock you already have
02
Inside the cylinder
03
Pins, springs and the shear line
04
A new key, new pins
Lock Rekeying
How the visit goes
Counting the keys that are already out there
Part of planning a rekey is understanding why it is happening. The locksmith asks how many keys exist as far as you know, who has held one, and whether any went missing with something identifying the address. The answers do not change the pinning, but they shape the advice: whether a padlock or mailbox shares the same risk, whether a garage keypad code should change on the same visit, and how many new keys make sense to cut. It also helps to know whether any key is a restricted or patented type, since those are cut from a record rather than duplicated and may involve the original supplier.
Proving the old keys are finished
The last operation at every door is the test that matters most. The locksmith turns the new key from outside and inside with the door open, then closed, and confirms the bolt throws fully and draws back cleanly. Then the old key is tried in the same cylinder and must turn nothing. This is repeated at every rekeyed door, because the door that gets skipped is the one an old key still opens. Spares cut from the new pinning are tried in every lock they are meant for. The old keys, now just shaped brass, are collected or handed back to you for the recycling bin.
Knowing when to rekey again
Rekeying is not a once-in-a-lifetime event; it is a habit tied to changes in who holds keys. The moments to think about it are the same ones that brought you here: a move, a tenant or roommate change, a key lost with anything identifying the address, a contractor who has finished, or a relationship that has ended. Between those events there is nothing to schedule. Because the house is now on a known system with a record, a later rekey is a shorter visit, and any new lock you add along the way can be pinned to the existing key so the household never drifts back to a ring full of mismatched keys.
Lock Rekeying
In the van
Pinning tweezers and tray
Dry graphite or PTFE lubricant
Reset tool for user-rekeyable cylinders
Key tags and keying record
Graded bottom pin kit
Lock Rekeying
What affects the quote
Records, tags and labelled key sets
A homeowner needs a short note. A property manager may want a keying chart, tagged sets for each suite and a key-issuance log, which is more office work and is quoted as such.
Number of keys cut
Keys are cut and tested individually, so the total depends on how many the household or the tenants need. Say the number when you book and the quote reflects it from the start.
Access to each door being rekeyed
A rekeying visit goes smoothly when every door is reachable without delay: an empty unit, a cleared hallway, or someone available to let the locksmith into each room. Locked common areas, tenants who are out, or furniture blocking a cylinder all add time the locksmith accounts for on site.
What to have ready
- Do you know the age of the locks or whether any is a restricted type?
- Do you own the home, rent it, or manage it for someone else?
- Would you like every door on one key, or should some doors stay separate?
Lock Rekeying: questions
QuestionsWhat should I have ready before the locksmith arrives?
A list of the doors you want included, a working key for each lock if you have one, and a clear idea of whether you want everything on one key or some doors kept separate. Have your identification and something tying you to the address handy. If you rent, have your landlord's agreement ready to mention. Knowing roughly how many new keys the household needs saves a second trip to cut more.
What exactly does rekeying a lock change?
What changes depends on the cylinder. Many locks turn when a row of small bottom pins lines up at a precise level, set by the cuts on your key, and during a rekey the locksmith tips those pins out and loads a set that lines up with a different key, cut new for you; some residential cylinders instead reset a side-locking bar without removing any pins. From then on the new key operates the lock and older keys do not, and the hardware on the door stays as it was.
Can all my doors be made to work with one key?
Usually, yes. Where the cylinders accept the same style of key blank, each can be pinned to one new combination, so a single key runs the front, back, side and garage doors. A lock from a different keyway family is brought into the group by exchanging its cylinder for a compatible one in the same finish. During the first walk around the property the locksmith reads every keyway and tells you up front which doors can be keyed alike.
Related services
- Lock Replacement & UpgradeThe house is fifteen years old and every exterior door still wears the light hardware the builder fitted: a short bolt, a thin strike held by two small screws, and a knob lock that never suited a street entrance.
- Vintage Mortise Lock ServiceThe old skeleton key still fits the keyhole, but it now needs a jiggle, a lean on the door and a little luck before the bolt moves.
- Smart Lock InstallationThe deadbolt is a stiff double-cylinder model that needs a key from both sides, and in the dark hallway finding it is a nuisance.