The electrical Certificate of Compliance is the most misunderstood document in South African property. Most people meet it once, during a sale, assume it is a formality, and discover otherwise when a transfer stalls or an insurer asks a question after a fire.
Here is what actually matters, and where buildings most often get caught.
When a certificate is required
Under the Electrical Installation Regulations of the Occupational Health and Safety Act, the user or lessor of an electrical installation must hold a valid Certificate of Compliance for that installation. In practice, three situations force the issue:
- Transfer of property. A certificate must be handed to the buyer, and it may not be older than two years at the date of transfer.
- New or altered installations. Any addition or alteration requires a certificate covering that work — a new board, a new circuit, an extension, a converted outbuilding.
- Change of user or lessor. Where the person responsible for the installation changes, the obligation to hold a valid certificate moves with it.
The two-year trap
A certificate older than two years cannot be used at transfer, even if the installation has not been touched. Sellers routinely present a certificate from a previous sale and lose weeks discovering it does not qualify.
What invalidates a certificate you already hold
A certificate describes an installation at a moment in time. Change the installation and the certificate no longer describes it. The usual culprits:
- A new distribution board, or new circuits added to an existing board.
- Solar, inverter or backup installations tied into the existing supply.
- A geyser replacement wired on site rather than swapped like for like.
- Work done by anyone not registered to issue a certificate — the work may be sound and still leave you uncertified.
- An outbuilding, cottage or garage converted and fed off an existing circuit.
What an inspection actually involves
A competent inspection is a test sequence, not a visual walk-through. Expect earth continuity, insulation resistance, polarity and earth leakage testing, verification of bonding and earthing, inspection of the distribution board and protective devices, and a check that circuit ratings match the cable installed. The results are recorded. If the installation passes, the certificate is issued with a test record behind it.
If it fails, you should receive a defect schedule — ideally with each item rated by severity, so you can distinguish between a missing circuit label and an unearthed water heater.
Where a CoC stops being useful
A certificate confirms the installation complied on the day it was inspected. It does not tell you which components are heating up and heading for failure. That is a different instrument: an infrared thermographic survey, carried out under normal load, which shows the temperature signature of a loose termination or an overloaded phase before it becomes an outage.
On commercial and industrial property the two are increasingly requested together, because the certificate satisfies the regulator and the thermal survey satisfies the insurer.
Practical advice
- 01Find your current certificate before you need it. Check its date.
- 02List every change made to the installation since it was issued.
- 03If anything on that list is electrical, assume you need a new certificate for it.
- 04On commercial property, book the inspection and the thermographic survey in the same visit. The marginal cost is small and the two reports answer different questions.
- 05Keep the test record, not just the certificate. The record is what stands up to scrutiny later.
This article is general guidance, not legal advice. Requirements differ between local authorities and change over time — confirm your specific position with a registered person before relying on it.
