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Old houses are packed with generations of nostalgia. But that’s not just it. There’s also old wiring. Old wiring in Sydney homes, particularly those built before the 1980s, poses critical risks like electrical fires, electrocution, and voided insurance policies. As uncomfortable as it is to picture your home with holes in walls and no power while a stranger tramps through the house, you need to rewire it quickly to make sure you and your loved ones are safe. So, how do electricians rewire an old house? Let's go through the steps, one by one.
Key Takeaways
- A full rewire runs in clear stages: inspection, planning, running new cable, connecting the switchboard, then testing and certification.
- Electricians "fish" cable through wall and ceiling cavities to keep wall damage to a minimum.
- A home rewiring job takes around 3 to 7 days, and you can stay in the home while it's done.
- Old homes often have other issues like VIR cables or asbestos, which a good sparky will flag early.
Step 1: Inspection and Quote
Every rewire starts with a proper look. Your electrician checks the existing wiring, the switchboard, how the cable runs through the house, and what condition it's all in. In older Sydney homes this is where the problems show up in VIR (rubber) cable, cloth-insulated wiring, or an ageing ceramic fuse board. All these details are included in your quote after your electrician inspects the house.
Step 2: Planning the Job
This step is more important than when the electrician starts working. If you plan the process correctly, you’ll save money. Depending on the budget, you can even rewire the house in stages as partial rewires.
But this is also the moment to think ahead. Since an electrician will be opening up the walls for the rewiring process, it’s easier and less expensive to add extra plug points, data cabling, or capacity for things like an EV charger down the track.
Planning how to rewire an old house should be done with your electrician’s input so you know exactly what the building is able to handle. Old homes need extra care.
Step 3: Running the New Cable
You are most probably worried about having to tear down the walls. But that’s not how it goes. Rather than cutting long channels through every wall, electricians "fish" the new cable through existing wall and ceiling cavities, feeding it through the gaps that are already there. That’s less of a mess than you would have pictured when you first heard that your old house must be rewired.
Do note that some access holes are unavoidable, especially in double-brick Inner West homes where there's no space for the cable to hide. However, an experienced electrician in Sydney keeps these small to avoid damage wherever possible.
Step 4: The Switchboard
Once the new circuits are run, they're connected to the switchboard. In an old house in Sydney, this almost always means an upgrade, swapping tired ceramic fuses for modern circuit breakers and RCDs (safety switches), which are now the standard. If there's asbestos backing behind the old board, which is common in older Sydney homes, it has to be removed safely by a licensed professional first. Again, a reputable electrician will flag this at the inspection rather than informing you abruptly out of nowhere.
Step 5: Testing and Certification
With everything connected, the new wiring system is tested to make sure it's safe and working as it should. Your electrician then issues a CCEW (Certificate of Compliance for Electrical Work).
This is a mandatory legal document issued by a licensed electrician upon completing home rewiring in Sydney. It certifies that the rewiring meets Australian Standard AS/NZS 3000 and NSW regulations. Hang onto it; it matters for insurance and if you ever sell.
How Long Does it Take to Rewire an Old House?
A full rewire takes around 3 to 7 days, depending on the size and age of the house and how tricky the access is. The biggest relief is that you can usually keep living there. Power is cut only to the area being worked on during the day and switched back on each evening.
Make sure you discuss what to expect when rewiring the house with your electrician before getting started. Old homes should be paid special attention and might have different requirements. Getting clarified ahead of time helps both the sparky and the residents prepare.
Why Old Homes Take More Care
Older houses simply hold more unknowns, brittle cable, asbestos, materials that have shifted over decades, and tighter access. That's not a reason to dread it; it's the reason to get electrical services from an electrician who has done plenty of them before.
We're your local Sydney electricians, fully licensed and insured, and we've rewired plenty of the area's older homes. If yours is due, get in touch for a free, no-obligation quote and we'll walk you through exactly what's involved before we start.
