Blog - Stewart Locksmiths

Restricted ‘do not copy’ Key Systems

by Business Owner & LocksmithRe-key and New Lock Installation0

Master Key Systems / Restricted ‘Do Not Copy’ Keys

A master key system is a key plan where specific keys can open a number of pre-defined doors and are mostly made using restricted ‘do not copy’ keys.

Restricted keys can only be cut by the master locksmith that supplied the master key system and only after approval from an authorising signatory from the client.

Example – an apartment building has 12 units with a common entrance, each unit has a unique key that can open the common door, but not other units.


When to select a Master Key System?

A Master Key System with restricted ‘do not copy’ keys may be the solution if:

✔ you require a higher level of security as they are harder to pick than standard domestic key systems

✔ you need to share your keys with multiple people, staff and/or trades and services


Stewart Locksmiths can convert your existing lock to accept a restricted do not copy key i.e. often you do not need to replace the lock as well.


We offer the design, supply, installation and maintenance of Restricted Master Key Systems allowing you to share your key knowing it can’t be duplicated without authorisation. Servicing both residential and commercial premises including body coporates and real estate agencies.

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Rekey or change locks?

by Business Owner & LocksmithRe-key and New Lock Installation0

When Should you ReKey or Change your Locks?

While it’s a given that you want to ensure your property is secure, it’s not always obvious whether you should install new locks throughout your home or commercial property or simply rekey the existing locks.

Why Should you Update your Locks?

Moving into a new property

It’s advised that when you move into a new home or work premise to update the locks. This ensures that any previous residents or people such as tenants, trades and guests with access to keys can no longer enter your property.

It provides important piece of mind, after all, you don’t know how many keys are circulating out there!

Lost a key

If you’ve misplaced or lost a key and you’re concerned it can be traced back to your property, you’ll want to update your locks to ensure it’s safe and your contents are secured.

Too many different locks

If your property has several locks requiring different keys, it’s possible to update the locks to allow you the convenience of only needing a single key. No more carrying around multiple keys!

ReKeying vs Changing Locks / New Lock Installation

Changing your locks refers to installing a new lock. Whereas rekeying your locks refers to changing the internal components of the existing cylinder, so the existing key no longer works, and a new key becomes the only working key.

Rekeying your locks will be the cheaper option as you’re not paying for new hardware. Therefore, there’s no need to install new locks unless your locks are damaged, or you’d like to change the appearance of the locks you currently have.

The Cost to Rekey Locks

Stewart Locksmiths charges $50 per lock plus a $90 call out fee *Cost is based on business hours of Mon-Fri 8am to 4pm. After hours is available – call for a quote.

South Yarra based Locksmith

We’re based in South Yarra and service surrounding suburbs.

Read more Tips or complete the Get an Estimate form or call Ben 0468 433 988 to book in a time to update your locks.