Can You Install Your Own Locks? DIY vs Hiring a Perth Locksmith Explained
- •DIY lock installation is possible for basic hardware swaps, but mistakes can leave your home vulnerable.
- •Incorrect installation voids manufacturer warranties and can compromise your insurance cover.
- •A licensed Perth locksmith brings the right tools, legal credentials, and experience for a secure fit.
- •Deadbolts and high-security locks almost always require professional installation to work correctly.
- •The cost difference between DIY and professional installation is smaller than most people expect.
You’ve just bought new locks and you’re wondering: how hard can this really be? The honest answer is that some swaps are straightforward, and some will quietly leave your door easier to force open than the lock you just replaced. Knowing which situation you’re in before you start is what this guide is for.
What Can You Realistically DIY When It Comes to Lock Installation?
Not every lock job needs a professional — but knowing the difference matters.
A like-for-like replacement — swapping an old knob lock for a new one of the same brand and size — is something a reasonably handy person can manage. The door hole, strike plate, and backset are already sized correctly, so you’re essentially bolting in a pre-fitted component.
Where it gets complicated is when you’re changing lock types, drilling new holes, or fitting a deadbolt to a door that didn’t have one. Even a millimetre of misalignment in the strike plate means the bolt won’t seat properly — and a bolt that doesn’t fully extend offers almost no forced-entry protection.
If you’re comparing lock types before deciding, our related article Deadbolt vs Knob Lock: Which Lock Type Should You Install on Your Perth Home? walks through exactly which hardware suits which door and situation.
What Are the Real Risks of Getting DIY Lock Installation Wrong?
A poorly fitted lock can be worse than no upgrade at all.
Misaligned deadbolts are the most common DIY failure. If the bolt doesn’t travel fully into the strike plate, a firm shoulder-barge can pop the door open regardless of the lock grade. You’ve spent money on hardware but gained almost nothing in security.
There’s also the insurance angle. Many home and contents policies require locks to be installed by a licensed tradesperson to honour a break-in claim. A DIY install that fails during a burglary could mean your insurer declines the claim entirely.
And if your home is showing signs it needs new locks urgently — stiff turning, visible wear, or locks that have been tampered with — a DIY patch risks compounding an already serious security gap. Our related article Top 5 Signs Your Perth Home Needs New Locks Installed Right Away covers these warning signs in detail.
When Should You Always Call a Licensed Perth Locksmith?
These are the situations where professional installation isn't optional.
- •Installing a deadbolt where there isn't one already — new drilling required.
- •Fitting high-security or digital locks with electronic components.
- •Setting up a master key system across multiple doors.
- •Rekeying locks after moving into a new property.
- •Repairing or replacing locks on a door with a damaged frame or jamb.
- •Any commercial property lock installation.
Ultimate Locksmith Perth holds a Police License (SA51285) and Installers License (SG33024), meaning every installation meets the legal standard required by insurers and building codes. That paperwork matters when you need to make a claim.
For a full breakdown of what professional installation typically costs versus DIY hardware spend, see our related article How Much Does Lock Installation Cost in Perth? A Honest Price Breakdown — the gap is often much smaller than people assume once you factor in tools and the risk of a second attempt.
How Does Professional Lock Installation Actually Work?
Fast, tidy, and backed by experience you simply can't replicate with a YouTube tutorial.
A licensed locksmith arrives with calibrated tools, the right drill bits, and the experience to fit a deadbolt correctly on the first attempt. The strike plate is positioned precisely, the bolt travel is tested under load, and the door alignment is checked before the job is signed off.
You can also ask about options you might not have considered. Our full range of lock installation services covers everything from standard deadbolts to digital keypads and master key systems — a conversation that takes minutes and could significantly improve your overall security setup.
For deeper context on the full installation process, The Complete Guide to Lock Installation for Perth Homes and Businesses is the hub article for this topic and covers every stage from choosing hardware through to post-installation testing.
Common Questions About DIY Lock Installation in Perth
Straight answers to the questions Perth homeowners ask most.
Is it legal to install your own locks in Western Australia?
Yes, there is no law preventing a homeowner from replacing their own locks. However, certain security systems and commercial installations may require a licensed installer to comply with building codes or insurance policy conditions.
Will my home insurance be affected if I install locks myself?
Potentially yes. Some insurers require locks to be fitted by a licensed tradesperson and may reject break-in claims if a DIY installation is found to have failed. Check your policy wording before deciding to self-install.
How long does professional lock installation take?
A straightforward deadbolt installation typically takes under an hour. More complex jobs — such as digital lock fitting or master key systems — take longer depending on the number of doors involved.
Can a locksmith rekey my existing locks instead of replacing them?
Yes, and it’s often the smarter choice. Rekeying changes the internal pins so old keys no longer work, without replacing the hardware — ideal after moving into a new property or after losing a key set.
Ready to Get Your Locks Installed Right — First Time?
Call Ultimate Locksmith Perth on 0481 365 802 — available 24/7 for emergency and scheduled lock installations across Perth. Don’t risk a DIY mistake on the locks protecting your home.
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Part of our guide: The Complete Guide to Lock Installation for Perth Homes and Businesses