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Realising your house needs rewiring is never a pleasant surprise, and plenty of us have no clear idea whether our home is due for it. The upside: spot the signs early and you'll usually save money. So let's get into the nitty-gritty of how much does it cost to rewire a house in Sydney and whether you need to. Rewiring a house can cost somewhere between $4,000 and $15,000 or more, depending on the size of your home, the location, the condition of the existing wiring, and whether your switchboard needs upgrading.
Key takeaways
- Rewiring a house in Sydney costs around $4,000 to $15,000 or more. Factors such as your home's size, age, and the condition of the existing wiring will affect pricing.
- A switchboard upgrade usually adds another $1,200 to $2,500, and asbestos, if found, adds to the cost too.
- Labour makes up roughly 50–70% of a rewire, so always compare what a quote includes, not just the final price.
- A full 3-bedroom rewire takes about 3 to 7 days, and you can live in the home while it's done.
What's included in a house rewire?
A full rewire replaces the old electrical cabling running through your walls, ceiling and floor with new, compliant wiring. The job covers new powerpoints and light switches, fresh cabling for every circuit, and often a switchboard upgrade. A local electrician in Sydney also tests and issues a CCEW (Certificate of Compliance for Electrical Work) as legal proof in NSW that the work meets the wiring standard under Australian Standard AS/NZS 3000.
How much does it cost to rewire a house?
Right here in Sydney, home rewiring costs $4,000 to $15,000 or more, depending on the size of your home and the condition of the existing wiring. If your switchboard needs upgrading, the cost increases. Here's a rough guide by home size:
- 1–2 bedroom unit — $4,000 to $6,000
- 3 bedroom house — $6,000 to $9,000
- 4 bedroom house — $8,000 to $12,000
- Large or double-storey home — $12,000 and up
A switchboard upgrade usually adds another $1200 to $2,500. Our cost to rewire a 3 bedroom house guide further breaks down what causes house rewiring costs to fluctuate and how to read a quote so you know you're paying a fair rate.
Factors that affect the cost of house rewiring
No two homes cost the same to rewire. As such, every single quote varies, particularly if your electrician pays attention to detail. The most common factors that drive the price of home rewiring in Sydney include:
- Size and layout: More rooms mean more power points, more lights and more cable to run. So labour and materials climb with every circuit.
- Age and access: Many older Inner West homes in Balmain, Glebe and Haberfield still have brittle VIR (rubber) or cloth-insulated cable that has to go. Tight wall cavities and double brick in these homes make cables harder to run, which can add 20–30% to the job.
- Switchboard condition: Old ceramic fuse boards usually need upgrading to modern circuit breakers and RCDs (safety switches). That's where the $800–$2,500 add-on comes in.
- Full or partial rewire: You don't always have to do the whole house at once. Staging the work helps spread the cost.
As a rough rule, labour makes up around 50–70% of a rewire, with materials and certification making up the rest. That's worth knowing when you compare quotes to understand how much it costs to rewire a house.
Switchboards and asbestos
These two things tend to surprise homeowners in Sydney.
Your switchboard is problem number one. If it still runs on ceramic fuses with no safety switches, it’ll need upgrading to bring the home up to standard before carrying new circuits.
Asbestos; that’s problem number two. A lot of older Sydney switchboards sit on asbestos backing panels, and some homes have asbestos in the walls. If it's found, it has to be removed safely by a licensed professional, which adds to the cost.
The good news: a reputable sparky will flag these issues before the work starts and not spring it on you halfway through the job. In case your electrician fails to check these issues before quoting how much it costs to rewire a house, make sure you ask questions.
How to read a house rewiring quote
It's common to get two quotes on the same house that differ by thousands of dollars, which makes it hard to know what's fair. The trick is to compare what's included rather than focusing only on the final number. A clear quote should spell out:
- Labour and the materials or cable being used
- The number of power points and lighting outlets
- Any switchboard work
- Whether testing and the CCEW certificate are included
If a quote is just one lump sum with no detail, ask for it to be itemised. At Impulse Electrical Enterprise, we recommend what your home needs in detail. A fair, upfront quote should leave you with no surprises.
Signs your home needs rewiring
Not sure whether you need a rewire? These are the warning signs worth acting on:
- Flickering lights or warm power points: The wiring behind the wall may be overheating.
- A safety switch that keeps tripping: A fault in a circuit or cable.
- An old ceramic-fuse switchboard with no safety switches: No longer on par with the current standard.
- Cloth, rubber (VIR) or lead-sheathed cable: Brittle, past its life, and a fire risk.
- Buzzing, a burning smell or discoloured outlets: Stop and call an electrician straight away.
It's also worth knowing that old or faulty wiring can affect your home insurance. Some insurers won't renew a policy, or may reduce a claim, if wiring is unsafe.
How long does a rewire take, and can you stay home?
A 3-bedroom full rewire takes around 3 to 7 days. Power is usually cut only to the area being worked on during the day and restored each evening, so most people are able to stay living in the home while it's done. For a step-by-step look at what happens, see our guide on how do electricians rewire an old house.
Frequently asked questions
Is it worth rewiring an older home?
Usually yes. Beyond safety, up-to-date wiring protects your insurance, supports modern appliances, and adds value if you sell. For most older Sydney homes, it's money well spent.
Do I need council approval to rewire?
For a standard rewire, generally no. But heritage-listed homes that are common across the Inner West can have extra requirements, so it's best to check with a licensed electrician first.
Can I rewire a house in stages?
Yes. A partial rewire lets you tackle the most urgent circuits now and the rest later, which is a practical way to spread the cost.
Does home insurance cover rewiring?
Usually not. Insurance tends to cover sudden, unexpected events. This does not include the gradual wear of old wiring. In fact, wiring that's past its life can put your cover at risk, which is another reason to stay on top of it.
Get a fair quote to rewire your Sydney home
We're your local Inner West sparkies, fully licensed and insured, with upfront pricing and no hidden fees. If you'd like to know what a rewire would cost for your home, get in touch for a free, no-obligation quote. We'll explain everything clearly before any work begins.
