You should replace your locks when they are visibly worn or corroded, if you have experienced a break-in or attempted break-in, when moving into a new property, or if the lock is an outdated model that no longer meets modern security standards. A licensed locksmith can assess whether repair or full replacement is the most cost-effective and secure option.
Overview
Lock replacement involves removing the existing lock hardware and fitting a brand-new lock mechanism, handles, and associated components. This is different from rekeying, which only changes the internal pins. Full lock replacement is recommended when locks are physically damaged, outdated, or when you want to upgrade to a higher security rating. Australian locksmiths carry a wide range of lock brands suited to local conditions — from coastal areas where corrosion-resistant hardware is essential to bushfire-prone zones where specific materials may be required. A new lock not only improves security but can also improve the appearance and functionality of your doors.
When you need this service
- ✓After a break-in or attempted break-in where locks have been damaged
- ✓Moving into a previously owned or rented property
- ✓Lock is worn, stiff, or no longer operates smoothly
- ✓Upgrading from a basic spring-latch lock to a deadbolt or high-security lock
- ✓Key has been lost or stolen and you cannot account for all copies
- ✓Existing lock is a discontinued model and replacement parts are unavailable
How it works
- 1
Assessment
The locksmith inspects your existing lock, door, and frame to determine the best replacement option. They measure the backset, door thickness, and check for compatibility with existing cutouts.
- 2
Lock Selection
You choose from a range of replacement locks suited to your security needs and budget. The locksmith advises on brands, security grades, and features such as bump resistance and pick resistance.
- 3
Removal & Installation
The old lock is removed and the new lock is fitted, including any necessary modifications to the door or frame. The locksmith ensures correct alignment for smooth operation and maximum security.
- 4
Testing & Key Handover
The new lock is thoroughly tested from both sides of the door. You receive all new keys and the locksmith demonstrates the lock's operation, including any features like thumb-turn or double-cylinder functionality.
How much does it cost?
Lock change and replacement costs in Australia typically range from $150 to $400 per lock, including both labour and hardware. A standard door knob or lever handle replacement costs $150 to $250, while a high-security deadbolt replacement runs $200 to $400. Premium brands like Abloy, Lockwood, and Mul-T-Lock sit at the higher end. Labour typically accounts for $80 to $150 of the cost, with the lock hardware making up the remainder. If multiple locks are changed at once, most locksmiths offer a reduced per-lock rate. Prices in Sydney and Melbourne are generally 10–15% higher than in regional areas. After-hours lock changes attract the standard emergency callout premium.
Australian regulations
Lock changes in Australia must be performed by a licensed locksmith holding a valid security licence in their state or territory — Class 2F in NSW under the Security Industry Act 1997, or equivalent licences under the Private Security Act 2004 (VIC) or Security Providers Act 1993 (QLD). There is no requirement to notify authorities when changing residential locks, but tenants in rental properties must obtain landlord consent under most state tenancy legislation. The Master Locksmiths Association of Australasia (MLAA) recommends using locks that meet or exceed AS 4145.2, the Australian Standard for mechanical locksets.