The truth that surprises many people: most standard home contents policies do not prescribe a particular lock class as a condition of paying out after a break-in. What they require are genuine signs of forced entry and a home that was actually locked. Anyone who only pulled the door shut instead of locking it runs into trouble if there is a dispute. That is the single most common mistake, and it costs people a lot of money every year.
I am a cylinder and key specialist. Locks are my daily business. But the question I get asked after every break-in is almost never technical. It is: will my insurance pay for this now? And the answer hangs less on the lock than on behaviour.
What the policy actually insures
What home contents insurance covers is burglary theft. That is a legally narrow term. A burglary assumes that someone had to overcome an obstacle, meaning they broke open a locked door, levered a window or manipulated a lock. No obstacle overcome, no burglary in the sense of the policy.
That sounds like splitting hairs. It is. But this exact hair-splitting decides who gets your money in a claim.
If the door was only pulled to, that is, not locked, the insurer can argue there was no real break-in at all. A simple push on the handle and the offender is inside. No forced entry, no trace, no payout. That simple and that bitter.
So always turn the bolt twice. Even for a quick run to the bakery round the corner. Even at night when you are sleeping at home. Especially when you are away longer, this is the cheapest insurance in the world, because it costs nothing but a second.
The classic: the tilted window
The second thing I keep tripping over is tilted windows and patio doors. In insurance terms a tilted window often counts as an open window. If someone climbs through it, that is not a burglary but a simple theft. And in the home contents policy that is usually not covered or only very limited.
In summer that is my most frequent call-out. Gallus, ground floor, tilted bathroom window, the laptop was gone. The policy paid only a fraction, precisely because no obstacle had been overcome. A tilted window is open in thirty seconds for a practised offender. Do not leave it tilted when you leave the house. Never.
When the policy does demand specific locks
It gets interesting with higher sums insured or special risks. A ground floor in a busy spot, an old building with an old wooden door, a very high cover sum for jewellery or electronics. Then the small print sometimes carries real conditions.
What can be in there:
- tested security doors to DIN EN 1627, often resistance class RC2 or RC3
- security cylinders to DIN EN 1303 with drill and pull protection
- protective fittings to DIN 18257, usually ES1 or ES2
- for very high sums, sometimes VdS-certified components
If your policy contains such clauses and you do not meet them, the insurer can reduce the payout or refuse it entirely in a claim. That is the moment a break-in hurts twice. Read your policy. Or call and ask specifically about the security clauses. Which classes lie behind this technically, and what the letters mean, I explain in detail in our piece on DIN standards and resistance classes.
A good security cylinder costs between 60 and 150 euros for the part, plus fitting. A protective fitting to ES1 runs roughly 40 to 90 euros. Those are manageable sums against the certainty that your insurer will not back out when it matters.
Careful with upgrading on your own initiative
A point almost nobody knows: the insurer pays for the repair after damage, but not for a voluntary improvement. If your cylinder is destroyed in the break-in, the replacement is part of the claim. But if you then upgrade to a higher level on your own, the difference is your business.
Last week a customer from Nordend sat with me after an attempted break-in at her flat door. The insurer paid the damage without fuss, because she had locked up and there were clear prying marks on the frame. The new tested cylinder, around 110 euros plus fitting, she paid for herself, because she voluntarily upgraded from standard to security level. Repair after damage yes. Voluntary improvement no. You should know that line before you sign.
Lost keys and locking systems
Now the most expensive case of all, and it has nothing to do with the classic break-in. The lost key.
If a key belonging to a locking system is lost, the replacement can get really expensive. With a system, one key often opens several doors, front door, cellar, flat. If a stranger finds such a key and can match it to the address, the whole system has to be re-coded for safety. That quickly runs into four-figure sums.
Not every home contents policy covers this. Many offer the cover only as an add-on, often under the heading key loss for privately used locking systems. Some cap the amount significantly. Anyone with a locking system in the building should check specifically whether this module is included and up to what maximum sum.
For tenants this is especially delicate, because whoever loses a locking system key is often liable for the entire new system. If you want to know exactly who pays for the swap, tenant or landlord, you will find the answers in our piece on who pays for the lock change.
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After the break-in: the right order
When it happens, the first hour often decides the payout. Stick to this order and there will be no dispute later.
- Touch nothing, tidy nothing, repair nothing before the damage has been recorded.
- Call the police immediately and file a report. The report is your most important piece of evidence for the insurer.
- Photograph everything. Forced door, prying marks on the frame, the destroyed cylinder, the mess. Better too many photos than too few.
- Inform the insurer quickly and prepare a list of stolen goods, that is, a list of the items taken with their values and, where possible, receipts.
- Only then have it repaired.
By the way, I always keep the warped cylinder and give it to the customer. The damaged component is excellent proof of the levering force and therefore of the break-in. Do not throw it away.
If you need a secure door again fast after a night like that, our emergency service is there at night and at the weekend too. If you then want to upgrade in general, a calm conversation about burglary protection is worth it once the first shock has passed.
Common questions, briefly answered
Do I have to lock up, or is pulling the door shut enough? Lock up. Always. Pulling the door shut is the most common reason a payout gets cut after a break-in.
Will the insurer pay for the better cylinder I fit afterwards? The equivalent replacement yes, the voluntary upgrade no. You carry the difference.
Is it my fault if I had an old lock? As long as your policy does not prescribe a specific class, an old standard lock is no grounds for refusal. The crux remains locking up and proving the forced entry.
What about the tilted window? In insurance terms often open. When you leave the flat, always close it fully.
What I advise
The most expensive gap is almost never the lock. It is the lock that was not turned. The second most expensive is the tilted window. Both cost you nothing to close, and both can cost you the entire payout.
Read your policy once and look for the word security clause. If a concrete requirement is in there, meet it before something happens, not after. If you want to know what security hardware realistically costs and where the rip-off begins, you will find an honest price overview with us.
For more on official requirements and on reporting a claim correctly, see the consumer advice centre.
Bottom line: your insurer rarely demands high-tech locks. But it almost always demands that you actually locked up. That is the cheapest protection you own, and the only one that costs you nothing.
