Lock Luxe Locksmith / Homeowner's guide
How Much Does It Cost to Change Locks in the UK?
A straightforward lock change can cost less than replacing a complete locking system. This guide explains the difference, what affects the quote and how to avoid paying for parts you don't need.
For local work, Lock Luxe provides lock-changing assistance from Hendon, covering nearby parts of North and North West London.
The short answer
How Much Does Changing a Door Lock Cost?
There isn't one fixed UK price for changing a door lock. A standard euro cylinder change, a mortice lock replacement and work on a faulty uPVC multipoint mechanism are different jobs, involving different parts and fitting requirements.
As a local example, Lock Luxe advertises standard-cylinder changes from £99 and uPVC mechanism work from £149. These are Lock Luxe's starting rates, not UK-wide averages or guaranteed totals. Mortice locks and complete nightlatches need an individual quote.
Advertised starting rate for a standard cylinder change.
Starting rate for mechanism work, not a fixed price for every full multipoint replacement.
Depends on the lock case, fittings, security requirements and the part that needs changing.
Check the complete quote. Lock Luxe's published pricing also lists a £49 attendance charge separately, but does not clearly establish whether it is included in or added to each starting rate. Ask which attendance, labour, parts, VAT and out-of-hours charges apply before booking. For current figures, see Lock Luxe's locksmith prices .
Compare your options
Lock Replacement Costs by Lock Type
The most useful way to compare the cost of changing locks is to identify which component needs replacing. A new key-operated cylinder isn't the same as a new internal lock case or a complete multipoint mechanism.
01 / Euro Cylinder
Euro Cylinder Lock Replacement Cost
Standard change: from £99 with Lock LuxeEuro cylinders are common on uPVC and composite doors. If the locking mechanism is working properly, changing the cylinder can provide a new set of keys without replacing the entire system.
The price depends on cylinder length, security rating, fitting and whether the existing hardware works correctly. Anti-snap security options can have different hardware costs.
02 / Timber-Door Mortice Lock
Mortice Lock Replacement Cost
Individual quote neededMortice locks sit within the door edge. Replacing a worn case is different from adjusting the door or changing another keyed component, and the new hardware needs to fit the existing preparation.
Lock case dimensions, the type of mortice lock, the condition of the door and relevant security or insurance specifications all affect the work. Lock Luxe has not published a separate fixed mortice-lock replacement price.
03 / Nightlatch
Yale-Style Nightlatch Replacement Cost
Individual quote neededA traditional nightlatch has a lock body on the inside of the door and usually a rim cylinder on the outside. If you only need new keys, changing the rim cylinder may be possible while keeping a sound latch body.
Replacing the complete nightlatch involves different fittings and labour. The existing model, door condition and whether the latch still works determine the right approach.
04 / uPVC and Composite Doors
uPVC Door Lock Replacement Cost
Mechanism work: from £149 with Lock LuxeOn a uPVC door, the problem may be the cylinder, central gearbox, multipoint locking strip or door alignment. These are not interchangeable parts, and replacing the complete mechanism is not always necessary.
Costs vary with the part's size and model, access, compatible-part availability and any adjustment required. The advertised £149 mechanism rate is a starting price, not a guaranteed total for a complete replacement.
Not sure which lock is fitted? The front door lock types guide explains how to distinguish cylinders, nightlatches, mortice locks and multipoint systems without dismantling your door.
Understanding the quotation
What Is Included in the Cost of Changing Locks?
A price for a replacement lock isn't always the same as the total price to supply and fit it. A proper quotation should explain the work and identify any applicable additional charges.
Lock Hardware
The cylinder, mortice case, nightlatch, gearbox or other component selected for your door.
Fitting Labour
Removing suitable existing fittings, installing the replacement and checking the operation.
Attendance
Whether visiting the property involves a separate charge, and whether it is included in the service quote.
Additional Parts
Handles, keeps, security furniture or adjustments if they are genuinely needed and agreed.
Time of Visit
Evening, night or urgent attendance may be charged differently from planned daytime work.
VAT and Final Total
Ask whether VAT applies and confirm the expected total before you authorise any work.
A useful question to ask: "Is that the total price for this job, including attendance, parts, labour and any applicable VAT or out-of-hours charge?" If the locksmith finds an additional fault, ask for the revised scope and price before agreeing to more work.
One door or several?
Does Changing Multiple Locks Cost More?
Usually, changing more locks means more hardware or fitting work, but the total is not necessarily a simple multiple of a one-lock starting rate. Each entrance may have different components and requirements.
One Front-Door Cylinder
If your door uses a sound multipoint mechanism and you only need new keys, a correctly matched cylinder may be all that needs changing.
Front and Back Doors
A timber front door and a uPVC back door may need entirely different locks. Identify each door and the work required instead of assuming one price fits both.
Several Doors at a New Property
Make a list of the entrances and decide which key-operated parts need changing. Some doors may need a new cylinder, while others may have a mortice lock or nightlatch.
Only One Part Has Failed
A damaged gearbox does not automatically mean the whole door or every lock needs changing. Identifying the failed part can prevent unnecessary replacement work.
Ask for a quotation covering every door and component. Do not assume a multi-lock discount unless it has been explicitly offered.
New home, new keys
How Much Does It Cost to Change Locks After Moving House?
When you move into a house or flat, you may not know how many copies of the existing keys are still in circulation. Changing the relevant locks can help restore control over who can access the property.
For example, a home with a working uPVC front-door multipoint system may only need a compatible cylinder to issue new keys. A separate timber back door could have a mortice lock or nightlatch that requires different hardware. The cost depends on each existing lock, not simply the number of entrances.
A locksmith should check whether the current mechanism is functioning correctly before recommending a whole-system replacement. If you are planning a move, our front-door lock replacement service explains the options for new keys and door security.
Flat entrances and fire doors: Any replacement must preserve suitable safe escape and the door's required performance. Do not choose a lock solely on price if the existing fire-door or exit arrangement needs to be maintained.
Avoid unnecessary work
Is It Cheaper to Repair a Lock or Replace It?
It can be cheaper to repair or adjust a problem rather than buy a complete replacement, but that depends on what has failed. A lock that feels stiff may have a worn cylinder, a misaligned door or a fault elsewhere in the mechanism.
When a Repair May Make Sense
If the lock hardware remains secure and serviceable, a suitable adjustment or repair may restore normal operation.
For example, a uPVC door that binds against its frame might need its alignment checked rather than an entirely new multipoint system.
When Replacement May Make Sense
If your keys are missing, a cylinder is damaged, a lock case has failed or the existing hardware is unsuitable, replacing the relevant component may be the better decision.
Avoid forcing a handle or key when it is resisting. If the door cannot be secured, explain that when you contact the locksmith so the urgency can be assessed.
Hendon & nearby North West London
How to Get a More Accurate Lock Change Quote
Lock Luxe is a mobile locksmith based in Hendon, NW4, serving nearby areas of North and North West London. You don't need to know the lock model before contacting us.
Tell us what's happened, and we'll discuss the likely options. A photograph can help identify the hardware, although some jobs need an inspection before the final work and price can be confirmed.
- Send Your Postcode We can check whether the address is within our local service area.
- Describe the Door and Problem Tell us if it's timber, uPVC or composite, and whether you're moving home, replacing lost keys or dealing with a fault.
- Share a Photograph If Convenient A photo of the handle, visible lock and door edge may help. Do not remove the lock or photograph your keys.
- Confirm the Complete Quotation Ask what is included, whether attendance is additional and what happens if further work is needed.
Common questions
Lock Changing Cost FAQs
Answers to the questions homeowners most often need resolved before arranging a lock change.
How much does it cost to change a front-door lock?
It depends on the fitted hardware. Lock Luxe advertises standard cylinder changes from £99, but mortice locks, complete nightlatches, specialist security fittings and multipoint mechanism work may require different parts and labour. Confirm a job-specific total before booking.
Is it cheaper to change a cylinder than the whole lock?
Changing only the cylinder is often less involved than replacing a full multipoint mechanism. It's only the right option if the rest of the locking system is in sound working condition and the cylinder suits the door.
How much does changing a uPVC door lock cost?
Lock Luxe advertises standard cylinder changes from £99 and uPVC mechanism work from £149. Replacing a central gearbox or entire multipoint strip may involve different components and fitting requirements. See the uPVC door lock replacement guide for the differences.
Is a locksmith call-out fee separate from labour?
Policies vary by business. Lock Luxe has advertised a £49 attendance fee separately, but its published information does not clearly say whether that fee is included in every service starting price. Ask for the full total, including any attendance, labour, parts, VAT and out-of-hours charges.
How much does changing locks after moving house cost?
That depends on how many doors need new keys and whether each requires a cylinder, mortice lock, nightlatch or other hardware. A suitable cylinder-only change may be enough on a door with a functioning mechanism; ask for an itemised quote for all entrances.
Can I get a lock change quote from a photograph?
A clear photo of the lock, handle and visible door edge can help identify likely components. It may not reveal internal damage or confirm dimensions, so an inspection can still be needed before the precise parts, work and price are agreed.