Lock Change After a Break-In

When a lock has been forced, snapped, picked, or simply left damaged by an attempted entry, it offers little more than an illusion of security. Insurance policies — particularly those aligned with standard home contents requirements — often specify that any lock that has been compromised must be replaced, not repaired, before a claim can proceed. Beyond the insurance angle, a damaged euro cylinder or a sprung mortice deadlock is frequently easier for an opportunist to defeat a second time, because the internal mechanism is already weakened or misaligned. Acting on the same day closes that vulnerability entirely.

There is also the question of keys. If your property was entered, there is a real possibility that spare keys were taken from inside — from a hook near the door, a kitchen drawer, or a bag that was rifled through. Even if no keys were visibly taken, you cannot be certain. A door lock change replaces the entire cylinder or lock body, rendering any key that existed before the break-in completely useless. That applies to the front door, the back door, and any internal door that was forced between parts of the property.

Our lock change service after a break-in typically covers every entry point that was attacked or that shares a key with the compromised lock. For a typical Forest Gate terraced house or maisonette, that usually means a Yale-type nightlatch and a 5-lever mortice deadlock on the front door, a euro cylinder or multipoint lock on a rear uPVC or composite door, and potentially a communal entrance cylinder if the property is a flat in a block. We carry anti-snap euro cylinders that meet the TS007 3-star rating — the standard that provides meaningful resistance to the cylinder-snapping technique that remains one of the most common forced-entry methods on uPVC doors across East London.

Where a door frame has been damaged by the break-in, we will assess whether the existing frame can hold a new lock securely. If it cannot, we will tell you honestly and explain what additional work is needed before we proceed, so you are not paying for a lock fitted into a frame that will not hold under pressure. We also replace multipoint lock mechanisms on composite and uPVC doors where the gearbox has been bent or the hook bolts have been forced — a part of the door that often goes unnoticed but is just as critical as the cylinder itself.

Every call-out for a door lock replacement London-wide is priced individually, because no two jobs are identical. The factors that determine the final quote include the type and specification of the lock or cylinder being fitted, the number of doors and entry points involved, the time of day the work is carried out — evenings, weekends, and bank holidays carry different rates — the travel distance from our operative to the property, and whether any additional hardware such as a new backplate, escutcheon, or striking plate is needed because the existing one was damaged during the attack.

We confirm the exact price with you on the phone before anyone leaves to come to your property, and again on arrival before any work begins. There are no call-out charges revealed only at the end of the job. If the quote changes because something unexpected is found once the door is examined — a hidden second lock, a frame that needs reinforcement — we tell you and get your agreement before continuing. Our aim is that you understand exactly what you are paying for and why, particularly at what is already a stressful time.

When you call 020 3757 6136 after a break-in or attempted entry, the first thing we do is ask a few brief questions: how many doors are involved, what type of doors and locks you currently have if you know, your postcode district, and whether the police have already attended. If you have reported the break-in to the police, they may have advised you not to disturb certain areas, and we will work around that. We are used to attending properties in Forest Gate and across East London alongside an ongoing police visit, and we know how to carry out a lock change without compromising anything that may be needed for a report or insurance claim documentation.

On arrival, our technician assesses every door and lock methodically — not just the one that was obviously targeted. We check for secondary damage that is easy to miss when you are dealing with the shock of a break-in: bent keep plates, misaligned door frames, damaged hinges, and blown euro cylinders that look intact from the outside but have been internally damaged. Where damage-free replacement is possible, we do it that way. Where a lock has been drilled or the cylinder snapped, the damaged component is extracted, and a new lock meeting or exceeding the original security specification is fitted. You are handed the new keys, and we do not leave until the door operates correctly on every locking point. If you need to inform a letting agent or housing association about the work carried out, we can provide documentation of what was replaced.