Rekey or replace your locks? How to decide
The difference between rekeying and replacing locks, when each makes sense after moving, losing keys or a break-in, and what renters need to check first.
Key takeaways
- Rekeying changes which key works; replacing changes the lock itself.
- Rekey when locks are in good condition but you are unsure who has keys.
- Replace damaged, worn or low-security locks.
What rekeying means
Rekeying changes the internal pins of a lock cylinder so old keys stop working. The lock body stays the same. It is usually quicker and uses fewer parts than replacing the lock.
When rekeying makes sense
Rekeying is often the practical choice when:
- You have moved into a home and do not know who has keys
- Keys were lost but not with your address
- You want several doors to work on one key
- The locks are in good working condition
When replacing is better
Replace locks that are damaged, worn, hard to turn, forced in a break-in, or low security. It is also the time to upgrade, for example to deadlocks or keyed-alike sets.
Renters: check first
Rules on changing locks in a rental differ between states. In many cases renters need the landlord's consent and must provide a key, with exceptions for family violence situations. Check with your property manager and state tenancy authority before any change.
Book a locksmith
Tell the locksmith how many doors, the lock types and whether you want keyed-alike. Post the job free on Fixit247 and compare up to 3 obligation-free quotes from verified locksmiths, where available.
General information only, reviewed for Australian conditions. Rules differ between states and territories and change over time, so confirm details with the relevant regulator. Call 000 in an emergency. Editorial policy
Need locksmith help?
Describe the job once. It's free to post, no account is needed to start, and there's no obligation to accept a quote.
Post a Job FreeGet the next checklist in your inbox.
Seasonal reminders and new guides for Australian households.
Keep reading
Lock hard to turn? Safe fixes to try
Why door locks become stiff, the safe checks and lubrication a homeowner can do, and when a sticking lock or door needs a locksmith.
ReadKey broke in the lock? What to do
Safe steps when a key snaps in a door lock, what not to try, and when a locksmith needs to extract it or replace the cylinder.
ReadWhen to call an emergency locksmith
How to decide whether a home lockout or damaged lock needs urgent locksmith help, and what proof and details to have ready.
ReadLocked out of your house? What to do first
Calm, safe steps when you are locked out of your home in Australia — who to contact, what not to do, and what a locksmith will need from you.
ReadChanging locks when you move into a new home
Why and how to secure a new home's locks after moving in, rekeying versus replacing, and what renters must check before changing any lock.
ReadHow to choose a locksmith you can trust
How to avoid locksmith call-out surprises in Australia: check licensing, get a clear price basis, confirm identity checks, and know when a lockout is urgent.
Read