Does Smart Home Tech Affect Your Home Insurance in the UK?

Smart home devices genuinely reduce certain kinds of risk - a leak sensor catches a burst pipe before it causes five figures of damage, a smart lock removes the “lost key left under the mat” risk, a camera and alarm combination is exactly what insurers already reward with standard security discounts. The question is whether “smart” versions of these devices unlock anything beyond what a standard alarm or lock already gets you. The honest answer: sometimes, but not automatically, and it varies a lot by insurer.

Smart Locks and Approved Standards

Most UK insurers ask about locks in terms of established standards rather than “smart” or “not smart” - specifically BS3621 (British Standard for thief-resistant locks, often a condition of cover on UPVC and multipoint doors). A smart lock only helps your insurance position if the underlying mechanism itself meets BS3621 or an equivalent standard - the smart features (app control, auto-lock, guest codes) are a convenience layer on top, not a security certification in themselves. Our smart lock guide covers which models meet this bar.

If your policy specifies BS3621 as a condition of cover (common on older or higher-value policies), fitting a smart lock that only meets a lower or unstated standard could technically put you in breach of policy terms even though the door “locks fine” day to day - this is worth checking directly with your insurer before replacing an existing certified lock with a smart one.

Alarms and Cameras

Traditional monitored alarm systems graded to NACOSS or SSAIB standards have long been recognised by UK insurers, sometimes for a meaningful premium reduction. Consumer smart alarms and cameras (Ring, Arlo, SimpliSafe-style DIY systems) generally sit outside these formal gradings, so don’t assume the same discount applies - but they can still reduce your likelihood of a claim ever being made, and some insurers do ask about their presence as part of the underwriting questions even without a formal discount attached.

The distinction insurers generally care about is monitoring: a professionally monitored alarm that alerts a response centre (and potentially the police) is treated very differently from a self-monitored app notification that only you see. Some DIY systems now offer optional professional monitoring add-ons specifically to bridge this gap - worth checking if the insurance angle matters to you, since it can shift the product from “nice to have” to something an insurer actually recognises.

See our smart security camera guide for options if you’re considering this route regardless of the insurance angle.

Water Leak Sensors: The Underrated One

Escape of water is consistently one of the largest categories of UK home insurance claims by value. A handful of water leak sensors costing under £100 combined are genuinely one of the highest-value-for-money things you can do to reduce your real risk of a large claim - independent of whether your specific insurer offers a discount for having them. Some insurers are starting to explicitly recognise leak detection (particularly systems that can automatically shut off the water supply at the mains when a leak is detected, rather than just sounding an alert), so it’s worth asking specifically about this category even if the answer for locks or cameras is a flat no.

Automatic Shut-Off Valves: The Next Step Up From Alerts

Worth understanding as its own category rather than lumping in with basic leak sensors, since it’s the version some insurers actually engage with directly. A standard leak sensor only alerts you - it still relies on someone being available to act on that alert, which does nothing for a leak discovered while you’re at work, asleep, or away. An automatic shut-off system (a motorised valve fitted to the mains water supply, paired with leak sensors placed under sinks and near appliances) physically cuts the water supply the moment a leak is detected, regardless of whether anyone sees the notification. This is a meaningfully bigger installation than a sensor alone - typically £200-400 for the valve plus professional plumbing fitting, against £15-20 per sensor for detection-only - but it’s also the category most likely to get a specific, named mention in an insurer’s underwriting questions, precisely because it removes the human-response step that limits how much a simple alert can actually prevent.

Smoke, Heat and CO Alarms

Standard smoke alarms are already a baseline expectation in most UK policies, but smart interconnected alarms (where every unit in the house sounds if one detects smoke, and a push notification reaches your phone even when you’re out) address a specific gap: fire damage that spreads because nobody was home to hear a single isolated alarm. This isn’t usually a distinct pricing factor on its own, but it’s one of the more genuinely loss-preventing categories of smart device regardless of what it does to your premium, and worth having even if it changes nothing on your policy.

Smart Monitoring Doesn’t Override Unoccupied-Property Clauses

An honest caveat worth stating plainly, because it’s easy to assume otherwise: fitting leak sensors, cameras and remote heating control does not exempt a property from the unoccupied-property terms most UK policies carry. Many policies still require the water supply isolated at the mains, or the heating maintained at a set minimum, once a property has stood empty beyond a specific number of consecutive days (often 30, sometimes less on older or higher-value policies) - and smart monitoring, however good, doesn’t automatically satisfy that requirement on its own. Some insurers are starting to accept remote monitoring as sufficient evidence of active management in place of the older physical-visit requirement, but this varies enough between providers that it’s worth confirming in writing rather than assuming a smart setup counts as compliance. See our holiday home security guide for the fuller unoccupied-property picture if this applies to you.

What You Actually Need to Do

• Call your insurer directly and ask - policy wording and available discounts vary significantly between providers, and change over time. Don’t rely on a general assumption
• Disclose security upgrades - adding a lock, alarm, or camera system is generally good news for an insurer, but check whether it needs to be declared as a change of circumstances
• Keep evidence - receipts, installation confirmation, and standards certification (e.g. BS3621) may be needed to support a discount or a future claim
• Ask about specific brands/standards by name - a generic “do you have smart locks” question gets a vaguer answer than “does a BS3621-rated smart lock qualify for the same discount as a standard BS3621 lock”

Frequently Asked Questions

Will smart home devices definitely reduce my premium?

Not automatically. Some insurers offer specific discounts for professionally monitored alarms or certified locks; most don’t yet have a formal discount category for consumer smart cameras or DIY security kit, even though the devices themselves genuinely reduce risk. Always ask your specific insurer rather than assuming.

Do I have to tell my insurer I’ve fitted a smart lock or camera?

Generally, security upgrades don’t need to be declared as they only reduce risk - but always check your specific policy’s “changes you must tell us about” section, since requirements vary by insurer.

The Honest Summary

Smart home tech is very good at reducing your actual risk of needing to make a claim in the first place - that’s the real value, discount or not. A cheaper premium is a possible bonus on top, not the main reason to fit these devices. If you’re choosing between products partly for the insurance angle, ask your specific insurer what they recognise before you buy, since certified standards (BS3621, NACOSS/SSAIB) matter more to them than the word “smart” does.