Lock Change After a Break-In
A break-in leaves more than a damaged lock — it leaves a household or business feeling exposed. Whether your front door was forced on a quiet residential street in Addiscombe or a rear entry was attempted on a commercial premises near Croydon town centre, the priority in the hours that follow is exactly the same: get a new, secure lock fitted before nightfall. Addiscombe Locksmith is a mobile lock change service operating 24 hours a day, 7 days a week — including evenings, weekends and bank holidays — across the whole Croydon area. Our trained, insured technicians carry a full range of replacement cylinders, mortice deadlocks and multipoint lock components in the van, so we can secure most properties on the same visit.
Open 24 hours, 7 days a week · Fully insured
When a burglary or attempted entry happens, waiting is not an option. We send a locksmith straight away and are usually with you in around 30 minutes, wherever you are in the CR postcode area. This page explains what a lock change after a break-in actually involves, which hardware is likely to need replacing, what factors affect your quote, and what you can do in the meantime while you wait for us to arrive. If you need help right now, call 020 4542 3118 and one of our team will take the details and dispatch a technician immediately.
What we do
Available 24/7
Day, night, weekends and bank holidays — a real local locksmith answers and sends a fully-stocked van.
We come straight away
Based in Croydon, we send a locksmith straight away — we're usually with you in about 30 minutes.
Fully insured
Vetted locksmiths, a clear price on the phone, and no surprise add-ons when we arrive.
Damage-free entry
We pick and bypass locks the right way, so most lockouts are solved without drilling anything.
What a Lock Change After a Break-In Actually Involves
The term lock change covers several different operations depending on how your door is constructed. On a traditional timber front door — common on the semi-detached and terraced houses throughout South Croydon, Shirley and Selhurst — there is usually a Yale-type nightlatch on the upper half and a 5-lever mortice deadlock lower down. If either has been forced, picked, or damaged during the break-in, both mechanisms are assessed. Where the lock body itself is intact but the cylinder has been drilled or snapped, we replace just the cylinder. Where the lock case is bent or the cam mechanism is broken, the full lock is changed. On uPVC and composite doors — the type fitted to most post-1990s houses and flats across Croydon — entry is almost always attempted by snapping the euro cylinder. We carry anti-snap, anti-pick, anti-drill cylinders rated to TS007 3-star, which is the standard most home insurers recognise as enhanced security.
For multipoint locking systems on uPVC patio doors and French doors — often the target on garden-side rear entries — the cylinder is again the vulnerable component, but we also check that the hook bolts and roller cams inside the door have not been bent out of alignment during the attack. A door that closes but no longer locks fully at every point is not secure. We carry out a damage assessment on arrival, explain exactly what needs replacing, and confirm an up-front price before any work begins. There are no surprises on the invoice.
Emergency Lock Change Croydon: Same-Day Security After Forced Entry
An emergency lock change is not simply swapping one cylinder for another — it is a systematic reassessment of an already-compromised entry point. When our technician arrives at a property in Croydon following a break-in report, the first step is to examine the door frame and surrounding woodwork, not just the lock. A forced door often damages the keep (the metal plate inside the frame that the deadlock bolt shoots into). If the keep has been split away from the frame, fitting a new lock without repairing or reinforcing it leaves the door no more secure than before. We carry extended-box keeps and frame-reinforcement hardware in the van for exactly this reason.
Because we operate as a mobile locksmith service across Croydon and the surrounding areas, there is no call to a central depot for parts — what we carry is what most jobs require. A same-day emergency lock change is achievable on the vast majority of residential front and back doors, as well as on commercial premises such as the retail units, offices and warehouses concentrated around Purley Way and the Croydon Opportunity Zone. If your property is a flat within a block, we can also change the lock on your individual flat door; for communal entrance doors, we advise speaking to your managing agent or housing association, as those locks affect other residents.
Door Lock Replacement Croydon: Choosing the Right Hardware
Not all replacement locks offer the same level of protection, and after a break-in is exactly the right moment to upgrade rather than simply restore. For a 5-lever mortice deadlock, we recommend and fit locks that meet BS3621 — the standard your insurer is most likely to reference when asking whether a property was 'adequately secured'. For euro cylinders on uPVC and composite doors, TS007 3-star cylinders with an anti-snap break line are the current benchmark. These cylinders are engineered so that if someone attempts to snap the protruding section — a technique used in a significant proportion of residential break-ins across London — the internal mechanism remains intact and the door stays locked.
If you would like smart or keypad options fitted at the same time, we can discuss what is compatible with your existing door hardware during the visit. For commercial properties requiring a door lock change — whether a shop unit off George Street, a small office, or a letting agency premises — we can fit high-security cylinders and discuss master-keying arrangements where multiple doors need to work from a single key. A commercial lock change often requires a slightly more detailed conversation about access requirements, so it helps to have a keyholder present when we arrive. Call us on 020 4542 3118 to explain the situation and we will advise on the right approach before we set off.
What to Do Right Now While You Wait for the Locksmith
If the break-in has just happened or has been discovered, call 999 first if there is any risk the intruder is still on the premises. Once the police have attended and you are safe, there are a few practical steps that help the lock change go smoothly. Try not to touch or clean the damaged lock or door frame before the technician arrives — the police may want to examine it for forensic evidence, and an undisturbed entry point also helps our technician understand exactly how the attack was made and what reinforcement is needed. If the door will not close at all, wedge it shut as best you can and let us know when you call; we will confirm whether we need to bring additional frame repair materials.
Make a note of your door type (timber, uPVC, or composite), the number of locks visible on the door, and whether it has a letter box in the door itself or in a separate post box — all of this helps us confirm the right parts are on the van before we leave. Many Croydon residents also contact their home insurer at this stage to open a claim. Having a receipt for the lock change, including the specific hardware fitted and the security rating of any new cylinders, is useful documentation for that process. We can provide this on request. For landlords and letting agents, we are accustomed to working with both the tenant on-site and the agent or owner by phone to agree the work and confirm authority before the door lock change is carried out.
Frequently asked questions
Answers to what our customers ask most. Still unsure? Just call.
How quickly can you reach a property in Croydon after a break-in?+
We send a technician straight away and are usually on-site in around 30 minutes, though arrival time can vary depending on traffic and your exact location within the Croydon area. We operate 24 hours a day, 7 days a week — including weekends and bank holidays — so there is no delayed response because of the time of day. When you call 020 4542 3118, we will give you a realistic arrival window based on where the nearest available technician is at that moment.
How much does an emergency lock change cost after a break-in?+
We do not quote figures on this page because the final price depends on several factors: the type of door and lock involved (a uPVC multipoint mechanism costs more in parts than a single euro cylinder), the extent of frame damage, the specific hardware grade you choose, the time of day, and travel distance. What we always do is confirm an exact up-front price with you over the phone and again on arrival before any work begins. There are no hidden charges added afterwards. If the job turns out to be simpler than expected, the price reflects that.
My front door has been damaged and will not close properly — can you still secure it the same day?+
In most cases, yes. Many forced entries damage the door frame or the keep rather than the door itself, and we carry frame-reinforcement hardware, extended-box keeps and timber repair fillers on the van for this reason. When you call, describe the damage as best you can — whether the door swings open, whether the frame is visibly split, or whether the lock case has been torn away — and we will confirm what materials to bring. Damage-free working is our aim whenever possible, but after a forced entry some remedial repair is usually necessary alongside the lock change.
Should I change just the cylinder or the entire lock after a burglary?+
It depends on how the entry was made and the condition of the existing lock body. If the attack used cylinder snapping — common on uPVC doors across Croydon — the euro cylinder needs replacing with an anti-snap, TS007 3-star rated cylinder, and the lock case is often undamaged. If the door had a 5-lever mortice deadlock and it was drilled, picked or the case was forced, we assess whether the lock body itself is compromised. We carry out that assessment on arrival and explain our findings clearly before recommending a full door lock replacement or a cylinder-only swap.
I rent my flat — do I need my landlord's permission for a lock change after a break-in?+
In practice, yes — your tenancy agreement is likely to require you to inform your landlord or letting agent before changing the locks, even in an emergency. We understand this can feel frustrating when security is urgent. What many tenants do is call their landlord or agent immediately and obtain verbal agreement while we are on our way, then follow up in writing. We are experienced in liaising with both a tenant on-site and a landlord or managing agent by phone to confirm authority before beginning work, which protects everyone. If your property is managed by a housing association, the same process applies.
Can you change locks on a commercial property in Croydon outside business hours?+
Yes. A commercial lock change is one of the more common call-outs we receive outside of normal office hours, particularly for retail units and offices where a break-in is discovered late at night or early in the morning. We work on commercial premises across Croydon at any hour — including the industrial and retail areas around Purley Way and the town centre. For commercial jobs it is helpful to have a keyholder present, both to confirm authority and to discuss any access requirements, such as whether multiple staff need separate keys or whether a master-key arrangement would be useful going forward.
Locked out or need a lock fixed? We are on the way.
We answer 24/7 — talk to a real local locksmith now.
020 4542 3118