Does DIY Electrical Work Void Home Insurance?
“DIY electrical work voids your home insurance” is repeated so often it’s become received wisdom. It’s also not quite how insurance policies work, and the imprecision cuts both ways — it makes some people complacent when they check their policy and find no such clause, and others panic about work a previous owner did decades ago.
Here’s the actual mechanism.
“Void” and “denied” are different things
| Voided policy | Denied claim | |
|---|---|---|
| What happens | The policy is treated as never having existed | The policy stands; this particular claim isn’t paid |
| Usual trigger | Fraud, or significant non-disclosure when the policy was taken out | An exclusion in the policy applies to this loss |
| Effect on other claims | You have no cover at all | Unrelated claims are generally unaffected |
| Which one DIY work usually causes | Rare | This one |
Almost everything described online as “voiding your insurance” is really claim denial. The distinction matters because it tells you what’s actually at stake: not blanket uninsurability, but a specific claim refused at the worst possible moment.
Most policies don’t mention unlicensed electrical work at all
This surprises people who go looking. Read a typical home and contents PDS and you’ll often find no clause saying unlicensed electrical work voids anything. That isn’t reassurance — it means the denial arrives through general exclusions that were always there.
| Common exclusion | How unlicensed work engages it |
|---|---|
| Faulty workmanship or defective work | The most direct route — damage arising from work not done to standard |
| Damage that isn’t sudden and accidental | A connection overheating over months isn’t a sudden event |
| Failure to maintain the property | Known defects left unaddressed |
| Unlawful or illegal acts | Unlicensed electrical work is an offence in Queensland |
| Non-compliance with laws or standards | Work not meeting the Wiring Rules |
| Non-disclosure | Some policies require disclosure of significant alterations |
So the answer to “does my policy exclude DIY electrical work?” is often technically no, while the practical exposure is still very real.
Causation is what actually decides it
The question an insurer asks isn’t “was there ever unlicensed work here?” It’s whether the work was a proximate cause of this loss.
The Australian Financial Complaints Authority — the body that resolves disputes when a claim is refused — publishes how it applies that test. Its position is that the proximate cause of a loss is the dominant, effective or operative cause; that it does not have to be the first, the last or the only cause; and that identifying it requires a common-sense evaluation of the evidence.
Where there’s more than one cause, AFCA’s stated approach is that if one cause would have caused the loss on its own and the other would not have caused it without the first, the first is the proximate cause — and where one clearly had a greater influence on the loss than the other, that one is the proximate cause.
The part that’s stricter than people expect
- Where two proximate causes operate and one of them is an excluded event under the policy, AFCA describes the established position as being that the insurer can deny the claim regardless of whether the other proximate cause is an insured event
- The reverse also holds: where one proximate cause is an insured event and the other isn’t excluded, the insurer is liable
- So “it only contributed partly” is not the safe harbour it’s often assumed to be. Partial contribution by an excluded cause can be enough
What that means in practice:
- A DIY power point in the garage has little bearing on a claim for storm damage to the roof — different loss, different cause
- That same power point is central to a claim for a fire that started in the garage wall
- Where it’s one of several contributing causes, the outcome depends on which cause was dominant and whether an exclusion attaches to it
Which is why blanket statements in either direction are wrong. “You’re not covered” and “it doesn’t matter” are both overconfident.
How it gets discovered
People assume undocumented work stays undocumented. After a significant loss, that’s not how it goes.
- Fire investigation. Serious fires are investigated for origin and cause, and electrical faults are a common finding. The investigation looks at the electrical system directly
- Forensic electricians. Insurers engage specialists to determine whether an installation contributed to a loss
- The paper trail, or its absence. Licensed work produces a certificate of testing and compliance. Its absence for work that clearly happened is itself informative
- The work speaks for itself. Non-standard connections, wrong cable, missing protection, unlabelled circuits — obvious to anyone who does this for a living
If a claim does get denied
Worth knowing your rights here, because they’re more specific than most people realise. Moneysmart sets out what an insurer must give you in writing when a claim is refused:
- What part of the claim they did not accept, and the reasons for their decision.
- Your right to ask for copies of any reports they relied on in making that decision — which, where an electrical cause is alleged, means the forensic report itself.
- How to complain about the decision. Reports you request must be sent within 10 business days.
- Escalation. If the insurer’s own complaints process doesn’t resolve it, AFCA handles insurance disputes independently.
Asking for the report matters. If a claim has been refused on the basis that the installation contributed, that report is the document making the case — and a licensed electrician can read it.
It isn’t only about DIY
- Licensed work that doesn’t meet standards can engage the same faulty-workmanship exclusions. The licence isn’t a shield if the work was substandard
- A contractor whose licence had lapsed counts as unlicensed, even if they’ve held one previously — which is why the licence number on your certificate is worth checking on the Electrical Safety Office’s licence search
- Known faults left unaddressed can engage failure-to-maintain exclusions. Ignoring a burning smell or a buzzing switchboard for months is a different conversation from a fault nobody could have known about
What if a previous owner did it?
The common and genuinely difficult case. You buy a house, and years later something turns up that was never done properly.
You didn’t commit the offence, and that matters. But most exclusions are written around the damage and its cause rather than who was at fault, so an exclusion for faulty workmanship can apply regardless of whose workmanship it was.
- Get an inspection if the property’s history is unknown, particularly if it’s older or visibly modified. A pre-purchase electrical inspection is the ideal timing, but it’s worth doing later rather than not at all.
- Have anything non-compliant rectified by a licensed contractor, which produces a certificate and a dated record.
- Keep that documentation. It demonstrates you identified and addressed the issue.
- Consider whether your policy requires you to tell your insurer if you discover something significant.
A rectified fault with paperwork is a fundamentally better position than an unknown one, whoever created it.
Worth getting checked before it’s a claim
- Work you know was done by a previous owner or an unlicensed person
- Any circuit or fitting you can’t account for
- Non-standard-looking wiring, connections, or a modified switchboard
- A property bought without any electrical documentation
- Recurring faults that have been reset rather than diagnosed
What actually protects you
- Use a licensed contractor and verify the licence. Ask for the number and check it on the public register
- Keep every compliance certificate. It’s the documentary evidence that work was done properly and tested, and it’s the thing an insurer can actually verify
- Don’t ignore symptoms. A fault you’ve been aware of and left is materially worse than one you didn’t know about
- Get unknown installations inspected rather than assuming. An electrical safety inspection is the practical starting point, and if the board itself is the question, what drives a switchboard upgrade covers where that usually leads
- Read your own PDS — particularly the exclusions section, which is where all of this actually lives
None of this is exotic. It’s mostly using licensed people and keeping the paperwork they give you, which is also what what you can legally do yourself arrives at from the legal side.
On the Gold Coast, specifically
The properties where this comes up are the ones that have changed hands several times with decades of small jobs behind the walls — older housing through Palm Beach, Currumbin and Burleigh Heads, where nobody has the paperwork for any of it.
There’s also a local wrinkle on the “failure to maintain” exclusion: coastal corrosion is a known, documented deterioration mechanism here, so a switchboard that has visibly been corroding for years in a beachside property is harder to characterise as a fault nobody could have seen coming. Storm damage claims are the other common context — see what causes a power surge for where the network’s responsibility sits versus yours.
Frequently asked questions
Does DIY electrical work void my home insurance?
Not usually in the literal sense. Most policies don’t contain a clause specifically about unlicensed electrical work, and a policy is rarely voided outright. What happens is claim denial through general exclusions — faulty workmanship, damage that isn’t sudden and accidental, unlawful acts, or non-compliance with standards.
Would a claim unrelated to the electrical work still be paid?
Generally yes. Exclusions turn on causation — whether the work was a proximate cause of the loss being claimed. Unlicensed work in a garage has little bearing on storm damage to a roof, because it isn’t the dominant, effective or operative cause of that loss.
What if the work only partly contributed to the damage?
That’s less protective than it sounds. AFCA’s published approach is that where two proximate causes operate and one of them is an excluded event under the policy, the insurer can deny the claim regardless of whether the other proximate cause is an insured event. Partial contribution by an excluded cause can be enough.
What if the unlicensed work was done by a previous owner?
You didn’t commit the offence, but most exclusions are written around the damage and its cause rather than who was at fault. The practical answer is to get an inspection, have anything non-compliant rectified by a licensed contractor, and keep the documentation.
How would an insurer even find out?
After a significant loss, fire investigators examine origin and cause, and insurers engage forensic electricians to assess whether the installation contributed. The absence of a compliance certificate for work that clearly happened is itself informative.
My claim was denied over electrical work. What can I ask for?
The insurer must tell you in writing what part of the claim wasn’t accepted and why, and you have a right to ask for copies of any reports they relied on — which must be provided within 10 business days. Where an electrical cause is alleged, that report is the document making the case, and a licensed electrician can read it. If the insurer’s complaints process doesn’t resolve it, AFCA handles insurance disputes independently.
Can licensed work still cause a problem?
Yes. Work that doesn’t meet the Wiring Rules can engage the same faulty-workmanship exclusions regardless of who did it. A contractor whose licence had lapsed also counts as unlicensed, which is why the licence number on your certificate is worth verifying on the public register.
Unsure about work done before your time? Call us or request a free quote — an inspection puts it on the record either way.