Smart locks vs traditional deadlocks: what's right for your Australian home?

Smart locks have become common enough in Australian homes that the question is no longer really "do they work" but "do they meet the same standards my insurer and my building expect from a traditional deadlock." That question turns out to matter more than most of the marketing around smart locks lets on, and it is worth understanding before you install one on an external door.

The relevant benchmark in Australia is AS4145.2:2008, the Australian Standard covering mechanical locksets and latchsets. It tests locking hardware across several dimensions — physical security against forced attack, durability under repeated use, corrosion resistance, and key security — and it is the standard most Australian home and contents insurers point to, directly or indirectly, when they require deadlocks on external doors as a condition of burglary or theft cover. This is genuinely worth checking rather than assuming: it is common practice among insurers that a claim involving forced entry can be affected if the doors weren't fitted with compliant deadlocks, and some insurers report offering premium discounts where a property has enhanced security in place.

Where this gets more complicated with smart locks is that AS4145.2 was written for mechanical hardware, and not every smart lock on the market engages with it the same way. Some smart locks are designed to replace the mechanical deadbolt entirely, with their own bolt and lock body rated to AS4145.2 in their own right — these can generally be treated the same way a compliant traditional deadlock would be for insurance purposes. Many others, though, are retrofit units that sit over the top of an existing mechanical lock and turn its thumb-turn electronically, rather than replacing the underlying lock itself. In that case, it is the rating of the mechanical lock underneath that actually counts for your insurer, not the smart device added on top — the smart lock is convenience layered over the existing security, not a substitute for it. Before installing any smart lock as your primary external door security, it is worth checking specifically whether it is AS4145.2-rated in its own right, or whether it relies on the lock it's fitted to.

Convenience is where smart locks genuinely earn their reputation. Keyless entry via a code, fob or phone app removes the everyday hassle of physical keys, and features like temporary access codes for tradespeople, cleaners or visiting family, along with an activity log of who came and went and when, are things a mechanical deadlock simply cannot offer. This is particularly useful for households that regularly need to give short-term access to someone else — a dog walker, a cleaner on a fixed schedule, a family member checking on the house while you're away — since a code can be issued for a specific window and switched off afterwards, rather than a physical key needing to be cut, handed over and eventually collected back.

The trade-off worth planning for is power dependency — a smart lock relies on a battery, and a genuinely well-designed one should include a mechanical key override or another backup entry method for when the battery dies or, in some models, when there's a broader power outage. It's worth confirming this before you buy rather than after you're locked out because of a flat battery, and it's worth building a habit of replacing batteries proactively — most smart locks give a low-battery warning through the app well before they actually fail, and acting on that warning promptly avoids the problem altogether.

Apartments and strata properties add another layer worth checking before installing anything on a unit's front door. Many apartment entry doors are fire doors, and fire safety requirements commonly mean a simple key-locking deadlock that could trap a resident inside during an emergency is not permitted — free-egress hardware that always allows exit from inside, regardless of what's locked from outside, is often required instead. This applies to some smart locks just as much as it does to traditional deadlocks, and altering a fire-rated door without the right hardware and building-manager sign-off can create both a safety issue and a strata compliance problem. If you live in an apartment, checking with your strata manager or building management before installing either a new deadlock or a smart lock on your unit's entry door is a sensible step, not an optional one.

Neither option is universally "better" — a mechanical deadlock rated to AS4145.2 is simple, reliable and well understood by insurers, while a genuinely compliant smart lock adds real convenience without giving up that same baseline of security. This article is general information rather than advice for your specific property or policy. Our directory lists Australian locksmiths by area if you want a professional opinion on what suits your home.

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