Rekeying vs Changing Locks: What Newcastle Renters and Landlords Should Know

The short answer: rekeying changes a lock’s internal pins so old keys stop working, while keeping the same lock hardware, which is fast and cost-effective. Changing locks replaces the whole lock, which you would do if it is worn, damaged or you want an upgrade. For a move or a tenant change, rekeying is often enough. Call Lock & Shield on 0428 859 667.

Whether you have just picked up the keys to a new place or waved off a tenant, the same question comes up: do you rekey the locks or replace them? They sound like the same job, and people use the terms interchangeably, but they are different, and they cost different amounts. Pick the right one and you get the security you are after without spending more than you need to. Lock & Shield is a family-owned Newcastle locksmith, and our residential locksmith services help homeowners, renters and landlords across Newcastle and Lake Macquarie sort exactly this. Here is how to choose.

What Does Rekeying a Lock Mean?

Rekeying keeps your existing lock but changes what opens it. Inside every pin-tumbler lock sits a set of small pins that line up only for the correct key. When a locksmith rekeys the lock, they reset those pins to match a brand-new key, which means every old key stops working on the spot. The lock itself, the handle, the deadbolt, the hardware on your door, all of it stays exactly as it was. It is quick, it is tidy, and because you are not paying for new hardware, it is usually the cheaper option. It is the go-to whenever your worry is who might still have a key rather than the condition of the lock. If the locks are in good nick and you just want the old keys made useless, rekeying is almost always the answer.

When Should You Change the Lock Instead?

Sometimes resetting the pins is not enough, and you genuinely need a new lock. The obvious case is damage: a lock that is broken, seized, rusted or has been forced is past rekeying and needs replacing. Wear is another, since an old lock that sticks, grinds or feels loose is on its way out regardless of the key. Then there is the upgrade. If you want better security than your current locks offer, say a proper deadbolt, a keyed-alike set, or something that meets an insurer’s requirement, replacing the hardware is how you get it. You would also change the lock if the existing one cannot be rekeyed to match your others, or if it is simply the wrong type for the door. In short: rekey for control, replace for condition or an upgrade.

Moving Into a New Home or Rental

Moving in is the one time you should never skip this. You have no idea how many keys are floating around out there- previous owners, tradies, agents, the neighbour who watered the plants, so on day one you want every one of those old keys made useless. Rekeying usually does that perfectly, and cheaply. For landlords and property managers, it is worth doing between every tenancy as a matter of course, and our end-of-lease rekeying for landlords is built exactly for that changeover.

Rekeying vs Changing Locks: A Quick Comparison

Side by side, it is easy to see which suits your situation.

Rekeying

Cheaper, since you keep the existing hardware.
Fast, often done on the spot.
Makes all old keys useless immediately.
Ideal for move-ins, tenant changes and lost keys.
But it needs the lock to be in good working order.

Changing locks

Gives you new, better or matching hardware.
The fix when a lock is worn, damaged or forced.
Lets you upgrade security or meet an insurer’s standard.
But it costs more, since you are paying for the lock itself.

For most move-ins and tenant swaps, rekeying wins. When the lock itself is the problem, replacing it is money well spent.

[Image 2 placeholder. Suggested alt: New deadbolt lock being installed on a front door]

Rekeying and Lock Changes in Newcastle & Lake Macquarie

Whichever way you lean, it is a quick job for a local locksmith. Lock & Shield rekeys and replaces locks for homes and rentals across Newcastle and Lake Macquarie, and we will give you the honest call on which one your situation actually needs, rather than selling you new hardware you do not. As a fully licensed local locksmith, Master Licence 000108665, we can also key all your locks alike so one key runs the whole house, handle a move-in changeover, or upgrade you to a proper deadbolt. Give us a call and we will talk it through.

Frequently Asked Questions

Is rekeying cheaper than changing locks?

Usually, yes. Because rekeying keeps your existing lock and only resets the pins inside, you are not paying for new hardware, just the locksmith’s time. Changing a lock means buying the lock as well, so it costs more. If the lock is sound, rekeying is the budget-friendly choice.

Should I rekey when I move into a new house?

Yes, every time. You simply cannot know who still has a key, from past owners to tradies to agents. Rekeying makes all of those old keys useless on day one, cheaply and quickly, so only you and the people you choose can get in. It is one of the smartest first jobs in a new home.

Can you rekey all my locks to one key?

Yes. It is called keying alike, and it means a single key opens every door we rekey, so you are not juggling a fistful of them. It is popular with homeowners who want one key for the front, back and garage. We can set it up whether you are rekeying or fitting new locks.