Why you need a COC when selling — and choosing who issues it
Learn what makes a COC inspector trustworthy when selling. Registration, testing standards, and scope matter more than price or speed.
A Certificate of Compliance (COC) proves your electrical installation meets safety standards. When you're selling, your conveyancer will ask for it, your buyer's bond application may require it, and without one you're liable if something goes wrong after handover. The question isn't whether you need it—the question is who to trust to issue it, and what actually separates a reliable option from one that cuts corners.
Most electrical work done by a registered electrician comes with a COC as standard. But if your installation is older, work was done by someone unregistered, or you're simply unsure of what was done and when, you'll need someone to come in, inspect, test and either certify it or flag what needs fixing first. That person needs to be registered with the relevant regulatory body and know exactly how to document what they find. Choosing wrong means delays at the worst time, or worse—signing off on work that isn't actually compliant.
Who can actually issue a valid COC
Not every electrician can issue a COC that will be accepted. The person issuing it must be registered as a qualified electrical inspector or have the required accreditation to certify installations. This isn't a suggestion—it's a requirement that conveyancers and bond originators will verify. Ask any candidate directly: "Are you registered to issue COCs?" and ask for their registration number. Don't accept vague answers. If they hedge or say "it shouldn't be a problem," move on. A registered electrician who does installation work is not automatically registered to inspect and certify. These are different qualifications.
Testing and documentation matter more than speed
A COC is only as good as the inspection and tests behind it. The electrician must physically test the installation—continuity, earthing, insulation resistance, and load testing where relevant—and document the results. If someone quotes you a suspiciously low price or promises to issue a COC without a thorough visit, they're not doing the job properly. Ask what testing will be done and how long the inspection will take. A residential property usually takes a few hours, not 30 minutes. Request a copy of the test report before you pay, and check that it shows actual readings, not just a checkbox. If part of the installation is faulty, a good electrician will tell you clearly—not fudge the paperwork.
Previous work and partial installations
If your electrical work was done in stages—some years ago, some recently—clarify upfront what the electrician will inspect. Are they certifying the whole installation, or only new work? If only part of the house is new and the old circuits remain unchanged, can they still issue a full COC? These aren't trick questions; they define scope and cost. A dishonest electrician might issue a blanket COC without inspecting everything. A transparent one will explain what they can and cannot certify, and why. If the old work is faulty, they should recommend fixing it before they'll sign off—that's actually the sign of someone you can trust.
Timeline and your sale deadline
Many sellers panic because they need a COC before transfer and assume it's always a rush. It doesn't have to be if you organise it early. Find someone now, get them in within the next few weeks, and you'll have it in hand before conveyancers demand it. If you're already close to transfer, be upfront about the deadline and ask if they can prioritise. Reliable electricians often have waiting lists; unreliable ones promise same-day turnaround because they're not thorough. A reasonable electrician will give you a clear timeframe—usually a few days to a couple of weeks after the inspection.
The electrician you choose should be someone who explains what they find, shows you the test results, and stands behind the certification. On Strove, you can check their registration, read what other sellers have experienced, and ask about their specific experience with COC inspections before you book. That's worth the few minutes of comparison when it comes to peace of mind and a straightforward handover.
Common questions
- Can any registered electrician issue a COC?
- No. The person issuing a COC must be registered specifically as an electrical inspector or have the required accreditation to certify installations. An electrician licensed for installation work is not automatically qualified to inspect and issue certificates. Always ask for their registration number and verify their scope of practice.
- What tests should a proper COC inspection include?
- A thorough inspection includes continuity testing, earthing resistance checks, insulation resistance testing, and load testing where relevant. The electrician must physically test the installation and provide you with a report showing actual test readings, not just checkboxes. If they're unwilling to explain or show you results, that's a red flag.
- What if only some of my electrical work is new?
- Clarify this with the electrician upfront. They can only certify work they've inspected and tested. If part of your installation is new and part is old, they need to explain whether they're issuing a full COC or certifying only the new work. Old faulty work will need fixing before they'll sign off on the whole installation.
- How long does a COC inspection usually take?
- For a typical residential property, a proper inspection takes several hours. If an electrician promises to issue a COC in 30 minutes, they're not doing a real inspection. Ask what testing will be done and how long they expect to spend on-site before you book.
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