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Security begins at your doorstep. Whether you’ve just moved into a new home, experienced a break-in, or simply have worn-out locks, knowing when and how to replace your door locks is essential for maintaining your property’s security. At Locksmith Ninja, we’ve helped thousands of Australians upgrade their security with professional lock replacements. This comprehensive guide will walk you through everything you need to know about door lock replacement.

Signs It’s Time to Replace Your Door Locks

Before diving into the how-to, let’s identify when replacement becomes necessary:

1. After Moving to a New Property

This should be your first priority when moving into a new home. Previous owners, tenants, or contractors may still have keys to your property. A complete lock replacement ensures only you control access to your new space.

2. Following a Break-in or Attempted Intrusion

If your home has been broken into or someone has attempted to tamper with your locks, replacement is crucial. Damaged locks not only compromise security but may also indicate vulnerabilities that intruders have identified.

3. When Keys are Lost or Stolen

Lost or stolen keys present obvious security risks. Rather than wondering who might find your keys, replacing the locks provides immediate peace of mind.

4. Locks Show Signs of Wear and Tear

Difficulty turning keys, sticking mechanisms, or visible rust and damage are clear indicators that your locks are deteriorating. Modern locks not only offer improved security but also smoother operation.

5. Upgrading to Smart Lock Technology

The emergence of smart locks has revolutionised home security. These systems offer keyless entry, temporary access codes for visitors, and remote monitoring capabilities—significant upgrades from traditional locks.

Types of Door Locks to Consider

Choosing the right replacement lock depends on your security needs and budget:

Deadbolts

Single-cylinder and double-cylinder deadbolts remain among the most secure traditional lock options. They’re difficult to force open and provide excellent security for external doors.

Knob Locks

While convenient, knob locks shouldn’t be your primary security mechanism for external doors. They work best as supplementary locks or for internal doors.

Smart Locks

From keypad entry to smartphone-controlled systems, smart locks offer convenience and enhanced security features like access logs and temporary entry codes. Models like the Yale Assure, Schlage Encode, and August Smart Lock have become increasingly popular in Australian homes.

Euro-Profile Cylinders

Common in newer Australian homes, these locks offer excellent security when they include anti-snap, anti-bump, and anti-pick features.

DIY vs Professional Lock Replacement

Can You Replace a Door Lock Yourself?

Yes, replacing basic door locks is within the capabilities of most DIY enthusiasts. Basic knob locks and some deadbolts can be installed with common household tools. However, there are important considerations before proceeding:

Tools Needed for DIY Lock Replacement:

• Screwdriver (Phillips and flathead)
• Measuring tape
• Chisel (for adjusting the door frame if necessary)
• Drill (for new installation)

Basic DIY Replacement Steps:

1. Remove the existing lock by unscrewing the interior plate
2. Remove the latch mechanism from the door edge
3. Insert the new latch plate and ensure it’s flush with the door edge
4. Install the exterior lock cylinder followed by the interior mechanism
5. Test the lock functionality multiple times before closing the door

When to Call a Professional

While DIY installation can save money, certain scenarios warrant professional intervention:

• Installing high-security or complex locking systems
• Modifying doors to accommodate new lock types
• When door frames need significant adjustments
• Smart lock installations with integrated security systems
• If you’re unsure about maintaining your door’s fire rating with new hardware

At Locksmith Ninja, we find that professional installation ensures proper alignment, maximum security, and often extends the operational life of your locks. Additionally, professional locksmiths can provide valuable advice on the most appropriate security solutions for your specific circumstances.

Cost Considerations for Lock Replacement

How Much Should It Cost to Replace a Door Lock?

Lock replacement costs in Australia typically range from $70-$300 per door, depending on several factors:

Entry-level lock replacement: $70-$120

• Basic deadbolts or knob locks
• Simple installation with no modifications

Mid-range lock replacement: $120-$200

• Quality deadbolts from respected brands
• Moderate security features

Premium lock replacement: $200-$300+

• High-security locks with anti-tamper features
• Smart locks with advanced functionality
• Complex installations requiring door modifications

How Much Is Door Lock Replacement When Done Professionally?

Professional installation adds labour costs but offers precision and warranty protection. Expect to pay:

• Basic professional installation: $80-$150 per lock
• Complex installation or security upgrades: $150-$250 per lock
• Emergency after-hours service: Additional $50-$100 call-out fee

Is It Cheaper to Rekey or Replace Locks?

Rekeying is generally less expensive than full replacement, costing approximately $15-$40 per lock when performed by a professional locksmith. Consider rekeying when:

• Your locks are in good condition but key control is compromised
• You want all doors to operate with the same key
• You’re managing rental properties with frequent tenant changes

However, rekeying doesn’t address worn mechanisms or upgrade your security level. Full replacement is more appropriate when security enhancement is the goal.

Maintaining Your New Locks

Once you’ve invested in new locks, proper maintenance will extend their lifespan:

1. Regular cleaning: Use graphite powder rather than oil-based lubricants, which can attract dust and grime
2. Weather protection: Apply protective covers for locks exposed to harsh Australian elements
3. Routine checks: Test functionality every few months and watch for signs of wear
4. Professional servicing: Annual check-ups by a qualified locksmith can identify emerging issues

Beyond Lock Replacement: Comprehensive Security

While quality door locks form the foundation of home security, consider these complementary measures:

• Security door frames: Reinforced frames prevent forced entry even when locks are secure
• Strike plate upgrades: Extended strike plates distribute force across the door frame
• Secondary barriers: Security screens or bars provide additional protection
• Integrated systems: Connect smart locks to broader security systems including cameras and alarms

When Emergency Lock Replacement is Necessary

Some situations require immediate attention:

• Broken keys in locks
• Lock mechanisms that have completely failed
• Security compromises requiring immediate resolution

In these cases, Locksmith Ninja provides 24/7 emergency service across Australia with rapid response teams ready to restore your security.

Conclusion

Door lock replacement is a fundamental aspect of property security that shouldn’t be overlooked. Whether you choose DIY installation for simple locks or professional installation for advanced security systems, ensuring your locks are functional and appropriate for your security needs is essential.

At Locksmith Ninja, we’re committed to helping Australians make informed decisions about their security needs. Our team of licensed professionals can assess your current setup, recommend appropriate upgrades, and ensure professional installation that maximises both security and convenience.

Remember, your first line of defence begins at your door—make sure it’s properly secured.