Rekeying involves changing the internal pin configuration of your existing lock cylinder so that the old keys no longer work and a new set of keys is cut. It is typically 40–60% cheaper than a full lock replacement because the external lock hardware stays in place. Rekeying is ideal when your locks are in good condition but you need to invalidate old keys.
Overview
Lock rekeying is one of the most common and cost-effective locksmith services in Australia. Rather than removing and replacing the entire lock, a locksmith disassembles the lock cylinder, replaces the internal pins with a new combination, and cuts fresh keys to match. This means every old key for that lock becomes useless — providing the same security benefit as a new lock at a fraction of the cost. Rekeying is especially popular when moving into a new home, after a relationship breakdown, when keys are lost, or when a landlord needs to prepare a rental property between tenants. Multiple locks can also be rekeyed to operate on a single key (keyed alike) for convenience.
When you need this service
- ✓Moving into a new home and want to ensure no one else has working keys
- ✓Lost your keys and cannot confirm who might have found them
- ✓After a tenant moves out of a rental property
- ✓Relationship breakdown where an ex-partner has keys to your home
- ✓Want multiple locks keyed alike so one key opens all your doors
- ✓A tradesperson or service provider had temporary key access that needs revoking
How it works
- 1
Lock Assessment
The locksmith inspects each lock to confirm it is in good working condition and suitable for rekeying. Locks that are worn, damaged, or low-quality may be better replaced entirely.
- 2
Cylinder Disassembly
The lock cylinder is removed from the door and disassembled. The existing pins are removed and replaced with new pins that match a different key cut.
- 3
New Key Cutting
New keys are precision-cut to match the new pin configuration. If you want multiple locks keyed alike, all cylinders are pinned to the same combination.
- 4
Reassembly & Testing
The lock cylinder is reassembled, refitted to the door, and thoroughly tested with the new keys. The locksmith confirms that old keys no longer operate the lock.
How much does it cost?
Lock rekeying in Australia typically costs between $80 and $150 per lock, including labour and new keys. The first lock on a job usually costs more (around $100 to $150) because it includes the callout fee, with additional locks on the same visit costing $40 to $80 each. Rekeying all external locks to a single key (keyed alike) is a popular option and is priced per cylinder. Rekeying is generally 40–60% cheaper than full lock replacement, making it an excellent option when the existing hardware is in good condition. Prices in major cities like Sydney, Melbourne, and Brisbane are at the higher end, while regional locksmiths may charge less.
Australian regulations
Lock rekeying in Australia must be performed by a licensed locksmith holding the appropriate security licence — Class 2F in NSW under the Security Industry Act 1997, or equivalent under the Private Security Act 2004 (VIC) and Security Providers Act 1993 (QLD). Rental property rekeying is governed by state tenancy legislation; in most states, landlords are responsible for rekeying between tenants, and tenants must seek landlord permission before rekeying unless specific exemptions apply (such as domestic violence provisions). The Master Locksmiths Association of Australasia (MLAA) sets professional standards for rekeying services.