Changing locks after moving is one of the simplest ways to take control of access to a new home. Even when the previous owner or occupier hands over every key they have, it may be impossible to know how many copies were made over the years or who still has one.
That does not mean every lock must automatically be replaced with the most expensive available option. A sensible moving-day security review identifies which entrances matter, who may previously have had access and whether the existing locks are suitable and in good condition.
Why consider changing locks after moving?
Keys can accumulate over the life of a property. Former residents may have given copies to relatives, neighbours, cleaners, tradespeople, tenants, pet sitters or estate agents. Most of those copies may have been returned, but a new occupier usually has no reliable way to verify the full history.
Changing the relevant locks or cylinders gives you a new starting point. You know which keys are current and can control who receives future copies.
If you are renting rather than buying, do not change locks without considering the tenancy agreement and the landlord’s requirements. Speak to the landlord or letting agent first where necessary.
Make an access list before buying anything
Walk around the property and list every way someone could enter. Include the front and back doors, side doors, integral garage doors, patio or French doors, gates and any doors from an attached garage into the house.
For a flat, separate the lock on your own front door from communal entrances controlled by the landlord, managing agent or freeholder. Do not alter shared building security without authority.
Also note window locks where keys are used and any outbuildings that contain valuable equipment. Changing locks after moving is more useful when it covers the actual access points rather than only the most obvious front door.
Check the condition and type of each lock
Some existing locks may be perfectly serviceable but need a new cylinder or keying arrangement. Others may be worn, difficult to operate or below the security level you would choose today.
Police.uk advises householders changing door locks to choose a 3-star euro cylinder meeting TS007 standards where euro-profile cylinders are used. Its door and window lock advice also covers correct use of modern multipoint doors.
If you are unsure what type of lock is fitted, take clear photographs of the exterior hardware or ask a locksmith to inspect it. Avoid dismantling unfamiliar locks simply to identify them.
Do not overlook uPVC and composite doors
Many modern doors use a euro cylinder together with a multipoint mechanism. Replacing the cylinder can change which key operates the door without replacing the full strip mechanism when the rest of the system is sound.
However, if the handle is stiff, the door needs force to lock or the mechanism is unreliable, mention that separately. A new cylinder will not correct a badly aligned door or a worn multipoint mechanism.
Think about outbuildings from day one
A garage or shed can contain bicycles, power tools and garden equipment. Police.uk advises securing sheds and garages properly and notes that tools stolen from an outbuilding can also be used to attack the main home.
Check padlocks, hasps, hinges and doors as part of your move-in review. If you inherit old combinations, unknown padlock keys or obviously weak hardware, replacing them can simplify key control and improve security.
What about alarm codes, smart locks and access devices?
Physical keys are only one form of access. If the home includes an alarm, keypad, smart lock, garage remote, gate fob or other electronic access system, arrange for authorised codes and users to be updated.
Follow the manufacturer’s instructions and make sure ownership of any associated account is transferred properly. Do not assume that changing the front-door cylinder removes every previous form of access.
When should the work be done?
Ideally, review access as soon as practical after receiving possession. If you decide that changing locks after moving is appropriate, doing it early reduces the period during which unknown old keys might still work.
You can plan non-urgent work in advance, but avoid arranging changes before you legally have possession and authority to alter the property. Coordinate timing with completion, key collection or the start of your tenancy as appropriate.
Choosing a locksmith in Plymouth
Explain that you have recently moved and provide a list of the doors you want assessed. Ask whether existing mechanisms can be retained where sound, what replacement standards are proposed and how charges are calculated.
You can browse locksmiths serving Plymouth on Plymouth Trade Finder to compare local profiles and contact details. Check availability, insurance, experience and pricing directly with the business before agreeing to work.
Create a new key-management routine
Once the locks are changed, record how many keys were supplied and decide who needs copies. Avoid labelling a set with a full address. Keep spare keys somewhere genuinely secure rather than in an obvious outdoor hiding place.
If you give a key to someone temporarily, remember to retrieve it. When people move out or regular access arrangements end, review whether any copies remain outside your control.
Combine lock changes with a wider security check
Moving home is a good opportunity to check that doors close properly, windows lock, side gates are secure and outside lighting works. The objective is not to turn the property into a fortress; it is to remove obvious weaknesses and understand how the existing security should be used.
Police.uk provides broader guidance on protecting homes from crime, including doors, windows, gardens, sheds and garages. Using that advice alongside a lock review can give you a more complete picture.
Start your new home with clear control of access
The strongest reason for changing locks after moving is certainty. You cannot usually reconstruct the complete history of every old key, but you can decide who has access from the day you move in.
Review each entrance, deal with communal or rented-property issues appropriately, choose compatible security standards and keep track of new keys. It is a straightforward task that can form part of a calm, practical moving-in checklist.