Are you safe & secure?
Find out how to keep burglars at bay during the dark winter months
The type of lock you use to secure your home has a direct effect on your home insurance premiums. Here’s everything you need to know about door locks and security
When calculating your home insurance premiums, insurers need to work out how secure your property is – and how easily someone could break in.
So when you look for a new home insurance policy, you’ll usually be asked what type of locks you have fitted to your doors, and sometimes your windows too.
Giving incorrect information about your locks could result in any claims being rejected, so it’s important to provide the right details. If your locks are out of date, you may also be able to get a lower quote by replacing them before taking out your cover.
There are several different types of door locks. The main types you are likely to have on your doors are:
Here, we explain how the different locks work, what insurers think of them, and how to know what type of locks you have.
One of the most common types of lock, five-lever mortice deadlocks are fitted within a cavity in the door, which is called a mortice.
The levers are what the key has to move in order to ‘throw’ the ‘deadlock’ – i.e. to move the block of metal that prevents the door from opening. So the more levers a mortice lock has, the more secure it is – because you need more points of contact to pick it.
You can buy three-lever mortice locks, but most insurers want you to have at least five levers, as this is what’s needed for the locks to meet the British Standards Institute (BSI) BS3621 lock standard.
You may need BS3621 standard five-lever mortice deadlocks on all your external doors to get home insurance, while most companies will provide contents cover for a bit less if you have BS3621 locks on all your doors and ground-floor windows.
A multi-point locking system has three, four or five locking points, all of which lock simultaneously when you turn the key. It’s a very secure system that strengthens the top and bottom of the door as well as the middle, but it’s only usually used on uPVC and composite – rather than wooden – doors.
For insurance purposes, you will generally need at least five locking points to secure the main entrance to your home. The Master Locksmiths Association also recommends the use of multi-point locking systems with cylinders that are SS312 Diamond Approved or conform to the newer TS007 three-star Kitemark standard, both of which should protect against attempted burglaries.
Night latches, or Yale Locks, lock the door automatically when it closes and are often used alongside mortice deadlocks. From the inside, they can be opened by turning the latch; from the outside, they can only be opened using the key.
Insurers don’t generally view locks of this kind as secure enough on their own, but as an extra lock they can earn you a discount on your home insurance.
Look for one that meets the BS3621 standard; and remember that if you let the door close behind you, you’ll need your key to get back in!
The types of doors you have on your home are a big clue to the type of locks you have. If you have wooden doors, they are probably fitted with mortice deadlocks and/or night latches – if you have uPVC or composite doors (or a patio door), you’re more likely to have a multi-point locking system.
Other ways to work out what type of locks you have include answering the following questions:
Whatever type of locks you have fitted, remember to use them when you go out, as you will have difficulty claiming on your insurance if you leave your doors unlocked.
It’s a good idea to fit key-operated locks to all your downstairs windows. They can be fitted to the top or bottom of a window, or on the handle you use to close it.
So providing you remember to lock up when you leave the house, locked windows should knock a few quid off your premiums.
You can get door locks that require you to enter a digital combination before opening, as well as locks that can be opened using your smartphone or another trusted device.
However, unlike key-operated locks, these smart locks could potentially be hacked. So while some insurance companies view them as the latest word in home security, others consider them more risky than a traditional five-lever mortice deadlock.
So, if you’re considering fitting electronic door locks, it’s a good idea to talk to your home insurance provider first.
Insurers believe the safest kind of door lock to have is a BS3621 standard five-lever mortice deadlock – and we’re inclined to agree as they are generally the hardest locks to break.
However, the right type of door locks for your home will depend on the type of property and where it is, as well as what type of doors you have and your home insurance provider’s requirements.
Fitting secure locks to your doors and windows is not the only way to reduce the risk of your home being targeted by burglars. Other security measures that can help – and can also cut the cost of your home insurance – include:
On a day-to-day level, you can also keep your home and its contents safer by:
As explained above, many insurance companies will not offer you cover at all if your door locks do not meet their criteria. So ensuring your door and window locks are up to scratch will give you a much wider choice of insurers, which should help you find cheaper cover.
Most insurers also reward those who take steps to make their homes more secure with discounts to reflect the reduced probability of the property being burgled. You might, for example, get a 5% discount for fitting a night latch as well as a BS3621 five-lever mortice deadlock or for installing an insurer-approved burglar alarm.
Different insurers have different rules when it comes to the type of locks you need on your doors and windows. The safest bet is therefore to always opt for locks that conform to industry standards and kitemarks – and to update your locks if they don’t.
For five-lever mortice deadlocks, window locks, and night latches, the standard you want is BS3621. For multi-point locking systems, look out for the codes SS312 or TS007.
Everything you need to know to make sure you get the right insurance cover
Discover how to insure the cost of repairing your domestic appliances
How to cover your personal belongings if you’re renting
Learn how to protect your bicycle with specialist insurance protection
Here’s all you need to know if you have to claim on you home insurance
Insure your home and belongings against the risk of flood damage
Learn what steps to take to get the best deal on short-term home cover
Find out what is covered by accidental damage insurance