How to Choose the Right Front Door Lock

You get home after a long day, slide your key into the front door lock, and it barely moves. Or maybe you've just moved into a new place and realised you have no idea who else has a copy of that key. Perhaps your current deadlock looks like it came with the house in 1994 and you're wondering if it's still doing its job.

These are the moments when front door security actually gets attention. This guide covers everything Australian homeowners need to know: the main lock types available, how to choose the right one, what upgrades are worth the money, and what professional installation costs in 2026.

Deadbolts and Deadlocks

A deadbolt (sometimes called a deadlock) is the most common and recommended lock type for Australian front doors. The bolt extends deep into the door frame and cannot be pushed back without turning the cylinder. Single-cylinder deadbolts use a key on the outside and a thumb-turn on the inside. Double-cylinder models require a key on both sides, which adds security but creates an exit risk in an emergency.

Brands like Lockwood, Schlage, and Abloy are widely used across Australia. The Lockwood 001 and Lockwood 3582 are popular choices you'll find installed on many homes across Melbourne, Sydney, and Brisbane.

Knob and Lever Locks

These are common on older homes but offer weak resistance to forced entry on their own. The locking mechanism sits inside the knob, which can be snapped off with enough force. They are best used alongside a deadbolt, not as a standalone security measure.

Mortice Locks

Mortice locks are fitted inside the door itself, making them more tamper-resistant than surface-mounted options. They are a solid choice for timber doors and are often found in older Australian homes. A five-lever mortice lock provides better security than a two-lever version.

Smart Locks

Smart locks use Bluetooth, Wi-Fi, or a PIN pad in place of a traditional key. Brands like Yale, August, and Schlage offer models compatible with Australian door hardware. They suit homeowners who want keyless access or remote control via a smartphone app. Keep in mind that battery failure or connectivity issues can cause access problems, so most locksmiths recommend keeping a physical key backup.

Screen Door and Security Door Locks

Many Australian homes have a security screen door as a first line of defence. These use dedicated three-point locking systems or hook locks. The lock on the screen door should meet Australian Standard AS5039 for security screen doors.

Check Your Door Type First

Not every lock suits every door. Hollow-core doors provide poor anchor points and are more vulnerable regardless of lock quality. If your front door is hollow, upgrading the door itself is worth considering before spending on a premium lock. Solid timber, steel-faced, or fibreglass doors give deadbolts the backing they need to be effective.

Look for Australian Standards Compliance

Locks rated to Australian Standard AS4145.2 have been tested for resistance to attack. If your home insurer requires compliant locks, failing to install them could affect a claim. Check your policy documents before choosing a lock.

Consider Keying Alike

If you have multiple locks on the property, a locksmith can rekey them so one key operates all of them. One Reddit user noted paying around $680 for a new deadlock installation plus two locks rekeyed to match. Getting multiple locks keyed alike in one visit is more cost-effective than separate call-outs.

Think About Who Has Access

If you've recently moved into a property, had a break-in, lost a key, or ended a tenancy, rekeying or replacing the lock is a sensible step. Rekeying costs roughly $30 to $40 per lock plus a call-out fee of around $100 in most cities. Full lock replacement typically runs $70 to $200 for parts and labour on a standard job.

When DIY Is Reasonable

Replacing a like-for-like deadbolt on a pre-drilled door is a manageable DIY job if you have a drill, chisel, and the patience to align the strike plate properly. Most deadbolts come with a template and instructions. The key detail is ensuring the bolt extends fully into the door frame and that the strike plate is secured with long screws (at least 75mm) that reach the door frame stud, not just the thin door jamb.

When to Call a Locksmith

Call a professional for new lock installations that require new bore holes, mortice fitting, rekeying, or smart lock integration. A licensed locksmith will also spot issues like a misaligned frame or a weakened door that could compromise the lock's effectiveness no matter how good the hardware is.

In Australia, 82% of locksmith businesses offer 24/7 emergency service. For urgent jobs, a call-out after hours typically costs between $150 and $350 depending on timing and location. Always ask for a quote before work starts. As one Australian homeowner noted online: a $300 call-out to replace a lock is far less than repairing a door that has been kicked in.

Reputable Locksmiths Around Australia

There are over 700 lock change and replacement businesses operating across Australia, with an average rating of 4.7 out of 5 stars. Highly rated options include Terry's Locksmiths (4.9 stars, over 3,000 reviews), Tas Mobile Locksmith (5.0 stars), Express Locksmith Gold Coast and Tweed (5.0 stars), and Wynns Locksmiths Preston in Melbourne (4.8 stars). Getting at least two quotes for non-urgent work is always good practice.

Signs Your Lock Needs Replacing

A lock that sticks, turns stiffly, or shows visible corrosion around the cylinder is overdue for attention. Older pin tumbler cylinders can also be vulnerable to picking and bumping, particularly if the lock predates modern anti-pick features. Upgrading to a high-security cylinder, such as a Mul-T-Lock or Medeco, adds significant resistance without replacing the entire lock body.

Adding a Strike Plate Upgrade

The weakest point on most front doors is not the lock itself but the strike plate. Standard strike plates use short screws that only grip the thin door jamb. A heavy-duty reinforced strike plate with 75mm to 100mm screws anchored into the structural frame makes a real difference to kick-in resistance.

Combining Locks for Layered Security

A quality deadbolt combined with a door chain or a secondary bolt at the top of the door gives better overall protection than a single lock alone. This layered approach is particularly useful for older homes where replacing the entire door is not immediately practical.