When something happens that puts your home's security in question — you've moved into a new property, lost a set of keys, or ended a tenancy — the instinct is usually to change your locks. But changing your locks doesn't necessarily mean replacing them. In Melbourne and the Bayside suburbs, one of the most common questions our team at True Locksmith receives is: Should I rekey my locks or replace them entirely?

Both options restore your security. But they differ in how they work, what they cost, and when each one is the right call. This guide breaks down both services so you can make the right decision for your situation.

What Is Lock Rekeying?

Lock rekeying involves changing the internal pin configuration of your existing lock cylinder so that old keys no longer work. A locksmith removes the cylinder, replaces the pins inside, and issues new keys that match the updated configuration. The lock body, handle hardware, and overall mechanism all stay in place. Only the internal pins are swapped out.

At True Locksmith, rekeying typically takes 15 to 30 minutes per lock. It's a precise job that demands professional technique, but it causes minimal disruption and leaves your existing hardware intact. The result is a lock that looks and functions exactly the same, but every previously cut key is now useless.

What Is Lock Replacement?

Lock replacement means removing the entire existing lock unit, cylinder, body, and hardware, and installing a brand-new one. You get new keys to match, and there is no continuity between the old lock and the new one.

Lock replacement is the appropriate option when you want to upgrade the type of lock, when a lock is mechanically compromised, or when your security requirements have changed substantially. True Locksmith works with quality brands including Whitco, Gainsborough, ABUS, and Yale, and helps homeowners choose hardware that suits their property type, door configuration, and security goals.

When Should You Rekey Locks in Melbourne?

Rekeying is the right move when your lock hardware is in good condition, but you've lost control of who holds a working key. Common situations where rekeying is the appropriate solution:

Moving into a new property

Previous owners, real estate agents, or tradespeople may still have working copies of your keys. Rekeying is strongly recommended on the day you move in. It's the fastest and most cost-effective way to ensure you're the only one with access.

Lost or stolen keys

If keys go missing, rekeying immediately renders them useless. There's no need to replace hardware that is otherwise functioning well.

Change of tenants

Landlords and property managers across Bayside Melbourne, covering suburbs like Brighton, Hampton, Bentleigh, and Sandringham, routinely rekey between tenancies to prevent unauthorised access from former occupants.

Relationship or household changes

When a shared living arrangement ends, and you need to remove access for a former partner or housemate, rekeying achieves that without replacing any hardware.

Key consolidation

If your home has multiple locks on different keys, rekeying can configure them all to operate on a single key without touching the hardware itself.

In all of these scenarios, the locks are functioning correctly. The issue is key control, and rekeying resolves that at a fraction of the cost of full replacement.

When Should You Replace Your Locks?

Lock replacement becomes the right choice when the hardware itself is the problem, or when you're making a deliberate security upgrade. Situations that require full replacement include:

Worn or damaged locks

Locks that jam, turn stiffly, or have visibly deteriorated components are a security liability regardless of who holds the keys. A rekeyed worn lock is still a worn lock.

After a break-in attempt

Forced entry often damages the cylinder and surrounding hardware. Replacement restores full structural integrity in a way that rekeying cannot.

Upgrading your security

If your home currently has basic pin tumbler locks and you want to move to high-security deadbolts or set up a master key system, replacement is the appropriate path.

Outdated hardware

Older lock models may no longer meet insurance requirements or building standards, particularly in higher-value properties across Bayside Melbourne.

Renovation or new doors

When you're fitting new doors or updating handle hardware across the property, matching replacement locks makes practical sense.

Rekey Locks Melbourne Cost: What to Expect

Cost is one of the clearest differentiators between the two options. Rekeying is almost always more affordable than replacement because no new hardware is required. You're paying for the locksmith's time and skill, not materials.

The actual cost to rekey locks in Melbourne varies depending on the number of locks, the lock type, and whether the job is a standard booking or an urgent callout. For an accurate quote specific to your property, True Locksmith offers free quotes. Call 0421-767-767 to speak directly with a licensed locksmith.

Lock replacement costs more because you're paying for both labour and new hardware. However, if the replacement is part of a security upgrade, that investment comes with better protection, improved key control, and hardware that is built to last.

A useful way to think about it: if your locks are in good working order, rekeying delivers equivalent security gains at lower cost. If your locks are compromised, worn, or outdated, the cost of replacement is the cost of actually solving the problem.

Can All Locks Be Rekeyed

Most standard residential and commercial locks, including deadbolts, knob locks, and lever locks, can be rekeyed. However, not every lock is a candidate. If a lock is broken, severely worn, or has a damaged cylinder, a locksmith will recommend replacement rather than rekeying. Attempting to rekey a compromised lock doesn't resolve the underlying mechanical issue.

This is why a proper assessment matters. When our locksmiths attend a job across Melbourne's Bayside suburbs, from Sandringham to Moorabbin to Cheltenham, we inspect the lock condition first before recommending either service. There's no benefit to rekeying a lock that needs replacing, and no reason to replace a lock that only needs rekeying.

A Note on Master Key Systems

For properties with multiple entry points, or for landlords managing several tenancies, both rekeying and replacement can be carried out as part of a master key system. A master key system allows a single key to operate multiple locks while each individual lock still has its own unique key.

True Locksmith designs and implements master key systems for both residential and commercial properties across Southeast Melbourne. Whether you're rekeying an existing setup or installing a system from scratch, our locksmiths map and configure access to suit your requirements.

So, Which Option Is Right for Your Melbourne Home?

The straightforward answer: if your locks are mechanically sound and the issue is key access, rekey. If your locks are damaged, outdated, or you're upgrading your security, replace them.

If you've just moved into a property in Brighton, Beaumaris, Hampton, or anywhere across Bayside Melbourne, rekeying on the day you move in is the single most cost-effective security decision you can make. You don't know who has copies of the existing keys. A rekey resolves that immediately.

If your locks are old, stiff, or were compromised during a break-in, replacement is the correct path. Rekeying a damaged lock is not a security solution.

Get Expert Advice from True Locksmith

True Locksmith has been providing lock rekeying and lock replacement services across Bayside and Southeast Melbourne for more than 30 years. Our locksmiths are fully licensed, registered with the Master Locksmiths Association of Australia (MLAA) and Victorian Police (Security Registration No. 72185491), and carry the equipment to complete most jobs on-site in a single visit.

Whether you need to rekey locks in Melbourne after a move, or want to change locks in Melbourne as part of a security upgrade, we'll assess your locks and give you an honest recommendation.

Call 0421-767-767 for a free quote, or visit our Re-Key Locks and Change Locks service pages to learn more. We serve homeowners, landlords, and property managers across Brighton, Sandringham, Hampton, Cheltenham, Moorabbin, Bentleigh, Beaumaris, Elwood, and the wider Bayside region.