You get the keys, carry the last box through the door, and finally exhale. Then the obvious question lands – who else has a key to this house? If you have just moved in, choosing to change locks after moving house is one of the quickest ways to take control of your security from day one.
Most people are not being careless when they leave this job for later. Moving is hectic, budgets are tight, and there is always something more visible to sort first. But locks are different. You cannot tell by looking at a front door who has had copies made over the years, whether a previous tenant passed keys around, or whether a tradesperson still has access from a job done months ago.
Why change locks after moving house?
The short answer is simple – you do not know the full key history. Previous owners, former tenants, neighbours, cleaners, dog walkers, builders, family members, estate agents and letting agents may all have had keys at some point. Some will have returned them. Some may not even remember they still have one tucked into a drawer.
That does not mean anyone intends harm. It means uncertainty, and uncertainty is exactly what good home security should remove. A lock change gives you a clean start. From that moment, you know who has access and who does not.
For many households, that peace of mind matters as much as the physical security itself. If you are settling children into a new home, leaving the property empty while at work, or have just moved into an area you do not know well yet, it is a sensible first step rather than an overreaction.
When changing locks matters most
In some cases, it is not just a good idea but the right move straight away. If you have moved into a previously rented property, key control is often looser because multiple occupiers may have come and gone over time. If the seller cannot clearly account for every key, that is another warning sign.
It is also worth acting quickly if the locks are old, stiff, damaged, or clearly below modern security standards. Moving house is the ideal moment to deal with weak cylinders, worn mechanisms or dated hardware before they become a bigger problem.
If there has been a recent break-in, attempted burglary, lost key issue or dispute involving access to the property, waiting makes even less sense. In those situations, securing the home properly should be near the top of the list.
Can you rekey instead of replacing locks?
Sometimes yes, but it depends on the lock type. Rekeying changes the internal configuration so old keys no longer work, while replacement means fitting a new lock entirely. Both can solve the access issue, but one may be more practical than the other depending on what is already fitted.
For some properties, rekeying is a cost-effective option if the existing lock is in good condition and meets the right security standard. In other cases, replacement is the better call because the lock is worn, low quality or simply not suitable for the door.
This is where a professional assessment helps. The cheapest option is not always the best value if you end up keeping a lock that is already near the end of its life. A good locksmith will tell you plainly whether a rekey makes sense or whether fresh hardware is the smarter route.
Which locks should you change first?
The front door usually gets the attention first, and rightly so, but it should not be the only one considered. Back doors, patio doors, side entrances, garages, porch doors and accessible ground-floor windows all matter if they are part of the property’s entry points.
uPVC doors deserve special attention because the issue is not always just the cylinder. Sometimes the handle, gearbox or multi-point locking mechanism is also worn. If a door is difficult to lock or unlock, forcing a new key cylinder into the equation without checking the rest of the mechanism can leave the underlying problem unresolved.
If you have moved into a flat, think beyond your own front door. Communal entrances may not be under your control, but your individual lock security still matters, especially if keys have passed through several occupiers over time.
How soon should you change locks after moving house?
Ideally, as soon as possible. Many people arrange it for moving day or within the first few days of getting possession. That way, you are not spending your first week in the property wondering who may still have access.
If same-day change is not realistic, it is still worth prioritising it ahead of less urgent jobs. Painting can wait. New shelves can wait. Knowing your home is properly secured should not sit at the bottom of the list for weeks.
This is especially true if you are only partly moved in and the property may be left unattended between trips. Empty or half-furnished homes can attract opportunistic attention, so strong, reliable locks are part of reducing that risk.
What does it cost to change locks after moving house?
Cost depends on the number of locks, the type of doors, the standard of hardware chosen and whether there are repair issues alongside the change. A simple cylinder swap on one door will cost less than replacing multiple locks across a house with upgraded security options.
It also depends on what you want from the job. Some people only want old keys cancelled out. Others use the move as a chance to upgrade to anti-snap cylinders, better night latches or smart lock options. Neither approach is wrong. It comes down to budget, the condition of the existing setup and how long you plan to stay in the property.
What matters most is clarity. You should know what is being changed, why it is being recommended and what level of security you are paying for. Clear pricing and guaranteed work matter, especially when you are juggling every other moving cost at the same time.
DIY or call a locksmith?
A confident DIY job can work on some straightforward locks, but moving house is rarely the best moment to experiment if you are not sure what you are doing. Door types vary, lock sizes vary, and the wrong fit can leave you with a door that does not secure properly or a lock that fails sooner than it should.
A locksmith can usually identify the correct lock, fit it properly, check alignment and spot related issues quickly. That is particularly helpful with uPVC doors, composite doors and older timber doors where wear in the frame or mechanism can affect how the lock performs.
There is also the convenience factor. When you are unpacking, sorting utilities and dealing with removals, having a mobile locksmith come out and handle the job properly can save time as well as stress. For local households in a rush, that fast response is often the difference between meaning to do it and actually getting it sorted.
Should landlords and business owners change locks too?
Absolutely, though the context is slightly different. Landlords should think carefully about access control between tenancies, particularly where there is uncertainty over returned keys or where property condition suggests poor key management. A fresh lock setup helps protect the property and gives incoming tenants confidence.
For business owners taking on new premises, the same principle applies, but often on a wider scale. Former staff, contractors, previous tenants and third-party suppliers may all have had access. If the unit has shutters, rear service doors, internal offices or storage rooms, those should all be considered as part of the security picture.
This is one of those jobs that feels easier to postpone than it should. But whether it is a house, flat, shop or office, control over who can get in is basic security, not an optional extra.
A practical way to approach it
If you have just moved, start by checking every entry point you can lock. Count how many keys you were given, test each lock for stiffness or faults, and note anything that looks dated or insecure. Then decide whether you want a like-for-like change or a wider upgrade.
If you are unsure, get a locksmith to assess it on site. A local service such as Mobile Locksmith Wallsend can usually tell very quickly what needs changing now, what can be repaired, and whether rekeying or full replacement is the better fit. That keeps the decision practical rather than guesswork.
A new home should feel like yours straight away. Fresh locks will not unpack the boxes or build the furniture, but they do something just as useful – they let you shut the door at night knowing exactly who has access, and that is a solid start in any new place.