What actually drives the cost to rewire a house in Australia, home size, age, access, switchboard condition, and the variables that change the price. A Brisbane sparkie’s guide.

The cost to rewire a house in Australia depends on several variables. Home size matters, but age usually matters more. Cable access changes how many days the job takes. Switchboard condition is a separate factor. The biggest variable, what’s actually behind the plaster, only shows up once work begins.

Rewiring isn’t a one-line answer. A 1970s Wilston brick veneer with cloth-insulated cabling and a ceramic-fuse switchboard sits at one end of the spectrum. A 2010 Hendra build that needs a handful of extra circuits added sits at the other. Both fall under the general label of “house rewiring”, but the cost difference between them is enormous for understandable reasons.

Why house rewiring cost varies so much

A rewire isn’t a product. It’s a series of decisions made on site, and many of those decisions only become visible once walls have been opened up. A licensed electrical contractor’s hourly rate stays roughly constant. Almost everything else moves.

Five things drive the final number.

The first is size. A bigger home has more cabling to run, more circuits to terminate, and more outlets, switches, and light points to work through. Labour hours scale with all of that. A 5-bedroom Hamilton home costs more to rewire than a 2-bedroom Wilston cottage, but the gap is usually wider than people expect.

Age is the second factor, and often the bigger one. If a house went up before the mid-1970s, the wiring’s usually past its useful life. Cloth and rubber insulation gets brittle. You see it most around old ceiling rose terminations and on cable that’s been sitting near a hot roof for fifty Brisbane summers. By the time we’re called out, the insulation’s typically failed in patches across multiple circuits, which is one of the more common electrical dangers of old homes.

Access is the third. A single-storey Queenslander on high stumps with a clear underfloor is the easiest housing stock in the trade. A 1960s post-war brick home on a slab, with sealed cathedral ceilings and limited roof entry, is among the hardest. The difference in labour days can be substantial.

Switchboard condition sits fourth. If the existing board has ceramic fuses or no RCD protection, it has to be replaced. A new switchboard usually comes bundled into a full rewire rather than priced separately.

The last factor is what’s behind the plaster. Old DIY work, hidden junction boxes, asbestos in pre-1980s lining sheets, degraded earthing. None of it can be costed from a phone call, and it shows up routinely in older Brisbane homes.

A proper quote breaks these factors out so you can see where the money goes. A bad one gives you a single figure and hopes you don’t ask.

Signs your house needs rewiring

Wiring rarely fails dramatically. It deteriorates, and the signs are usually small for a long time before they’re serious. That’s why people miss them.

What we look for when we’re called out:

• Circuit breakers tripping when nothing unusual is running
• A faint plastic or fishy smell near outlets or behind walls
• Lights dimming when the air-conditioner or oven cycles on
• Power points that feel warm, look brown around the edges, or spark on plug-in
• Buzzing from switches or outlets
• A tingle when you touch a metal appliance casing
• Ceramic fuses still on the switchboard
• No safety switches on the final subcircuits

One of these alone isn’t necessarily a rewire trigger. A combination, especially in a home built before the mid-1980s, usually is. The tingle and the burning smell get treated as emergencies. The rest are warnings.

There’s one sign that won’t show up as a symptom: age. Wiring installed before the late 1970s in Queensland was commonly insulated with rubber or cloth. Both materials become brittle. Once that insulation cracks inside the wall, the copper is exposed and arcing becomes possible without any visible warning at the outlet.

What does rewiring a house involve?

A house rewire pulls out the old cabling and runs new copper through the home. The switchboard usually gets replaced at the same time. Outlets, switches, light points, and earthing all get brought up to current spec. The relevant Australian standard is AS/NZS 3000:2018, known across the trade as the Wiring Rules.

Most rewires follow a similar order. The property gets isolated from the Energex supply and the meter is pulled. Old cabling comes out through wall cavities, ceiling space, and the underfloor. Contrary to a common worry, most cable can be drawn through existing pathways without major plaster damage.

New TPS copper cabling goes in next, run to every circuit in the home. Outlets, switches, and light points get replaced where they’re worn or where the family’s actual use of the property no longer matches the original layout. The switchboard goes in after that. A modern unit, with circuit breakers and residual current devices on every final subcircuit, replaces the old enclosure. Earth and water bonding gets brought up to current spec.

Then comes testing. Continuity, insulation resistance, earth fault loop impedance, RCD trip time. When everything passes, the licensed contractor issues an electrical compliance certificate.

That certificate matters. It confirms the work meets Australian electrical standards. Insurance assessors ask for it after any electrical incident, and pre-sale inspectors look for it when the property changes hands. Keep it somewhere you can find it.

How long does it take to rewire a house?

Most full rewires take between four working days and two weeks. Home size is one factor, but access matters more.

A weatherboard Queenslander with a high underfloor and a roof cavity you can stand up in can be rewired inside a week. Solid double-brick homes from the 1950s, sitting on a concrete slab with sealed ceilings, take longer because every cable run turns into its own job.

A working guide:

• Small unit or 2-bedroom cottage: 3 to 5 working days
• 3-bedroom standard build: 5 to 8 working days
• 4 or 5-bedroom or double-storey: 8 to 14 working days
• Older home with access issues or asbestos: longer, sometimes considerably

Most clients ask whether they can stay in the house during the work. The honest answer is yes, but it’s disruptive. Power gets shut off in different sections at different times, tradies are in every room, and dust travels. If you’ve got young kids or work from home, plan to be elsewhere during the working day. It’ll be easier on everyone.

Cost to rewire a 2, 3, 4, or 5 bedroom house

Bedroom count is shorthand for floor area, and floor area drives cost. Bigger homes need more cabling, more circuits, and more terminations. A 4-bedroom rewire usually costs more than a 2-bedroom rewire for that reason alone.

Bedroom count alone won’t tell you much, though. Take a 1960s three-bedder in Greenslopes. Cloth insulation, original fuse board, slab construction. That job often comes in higher than a four-bedroom Hendra build from the mid-90s where the underfloor’s clean and the switchboard mostly checks out. The floor plan isn’t really what drives house rewiring cost. The condition of what’s already in the walls does.

For a 2-bedroom unit or cottage, circuit counts are low and the job profile is short. The complication is usually that older units share switchboards with neighbouring properties, which adds coordination time even when the cabling itself is straightforward.

Three-bedroom homes are the most common rewire size in Brisbane, and this is standard quoting territory.

A 4-bedroom rewire usually brings extra requirements. Second bathroom, sometimes a study or media room with its own load demand, and a handful of additional dedicated circuits. Ducted air-conditioning, induction cooktops, and EV-ready provisions all push the cost up when they’re part of the brief.

Five-bedroom homes and larger are almost always double-storey. Cable runs get long. Sub-circuit counts climb. In many cases the consumer mains need upgrading too. Price scales faster than the bedroom count suggests, because system complexity rises non-linearly with floor area.

Anyone giving you a fixed bedroom-based price without inspecting the property is guessing. The honest answer for any size is “we’ll know once we’re inside.”

Partial vs full house rewiring cost

A partial rewire targets specific circuits or areas where wiring is known to be failing, or where a renovation has opened the walls in one section of the home. A full rewire replaces every circuit in the property.

Partial work is cheaper, on the day. It’s also a gamble. Wiring fails in batches. The cable in the kitchen circuit is usually the same age as the cable in the bedrooms, run by the same person, on the same afternoon, in the same year. Replace one section and you’ve bought a few years on that circuit. The rest of the house is still running on what was there before. Coming back later costs more than doing the full job now, because the second visit has to splice into your earlier work.

Partial makes sense in a few specific situations. The most common is a renovation that’s already opened the walls in one area, where rewiring while access is good costs less than coming back later. Another is an isolated fault on a single circuit, with the rest of the wiring verifiably newer and testing clean. Budget pressure also counts. Sometimes a full rewire isn’t financially possible right now, and a targeted job buys time until it is.

A full rewire becomes the better call once the home crosses certain thresholds. Anything over 40 years old that’s never been rewired is overdue, and that applies to most pre-war Queenslanders and post-war brick homes still standing across Brisbane’s inner suburbs. Cloth or rubber insulation found in any circuit is a clear signal, because the rest of the system was almost certainly installed at the same time with the same materials. Original switchboards are another. And for properties being sold or insured, certified compliance across the whole installation is what insurers and buyers expect to see. Partial documentation tends to fall short of that.

Don’t accept a partial rewire as a money-saver if the full system needs replacing. Deferring the rest of the work doesn’t make it cheaper. Patching, additional callouts, and the joins where new cabling meets old all add up.

Switchboard upgrade cost and how it factors into rewiring

Every circuit in your home terminates at the switchboard. It’s where the main switch lives, where the breakers are mounted, where the RCDs sit. Faults almost always trace back here.

A modern switchboard upgrade brings the board up to AS/NZS 3000:2018. New main switch. Properly labelled breakers. RCDs protecting every final subcircuit, not just one or two. Surge protection goes in too where the property needs it, though that’s specced job-by-job rather than as standard.

There’s a practical reason the switchboard upgrade tends to come with the rewire rather than separately. Modern boards don’t connect reliably to old, degraded cabling. The reverse is also a problem. Aged insulation creates leakage currents that cause modern RCDs to nuisance-trip constantly, and sometimes the same RCDs fail to trip when a real fault occurs because chronic background leakage has masked the trip threshold. Old wiring and modern protection rarely cooperate.

You’ll see switchboard upgrade cost quoted as a standalone item plenty of times. That’s fine for what it is. When the whole house is being rewired, though, the board comes with it. Splitting them out across separate quotes isn’t really an honest breakdown of the work.

Anything from before the mid-80s, plan for a board replacement, there are a few clear warning signs it’s time for a switchboard upgrade worth knowing about. If there are still ceramic fuses on it, you don’t even need to think about that one. Replacement’s the only answer.

Electrician hourly rate in Australia and how it affects a rewire quote

Across Australia, the electrician hourly rate typically runs $90 to $130. State changes that number. So does what time of day you’re calling. Anything after-hours or emergency runs higher than standard daytime work, sometimes by a fair margin. Queensland rates aren’t an outlier in either direction. That spread is industry guidance, not a Dawson figure, every contractor builds their pricing off their own cost base.

Hourly rate is rarely how a rewire actually gets quoted, though. For a project of that size, most reputable electricians give a fixed price after on-site inspection. Hourly billing tends to apply to smaller work like callouts for tripping circuits, fault-finding on a single outlet, or any job that doesn’t need a multi-day scope.

Where the hourly rate becomes relevant is when scope changes mid-job. Old homes throw up surprises during a rewire. Asbestos in older lining sheets is one. Hidden water damage from previous roof or plumbing leaks is another. Prior unlicensed DIY work that has to be unwound is a third. A good quote spells out how variation work gets charged, so there’s no argument halfway through.

Watch out for a quote that comes in well under the others. In electrical work, that usually means corners are being cut on materials or labour, or the price will balloon once the job starts.

Can I DIY home rewiring?

No. It’s illegal in Queensland, and the safety problem is worse than the legal one.

Under the Electrical Safety Act 2002, fixed wiring work has to be done by a licensed electrician. The Electrical Safety Regulation 2013 backs that up. There are fines if you get caught, and they’re not small. But if your unlicensed work ever causes a fire or hurts someone, the fine isn’t what you’ll be worrying about. You’re personally on the hook for the consequences, the dangers of unlicensed electrical work extend well beyond the original repair cost you were trying to save on.

There’s also no way to fix it after the fact. You can’t get a licensed sparkie to come and certify unlicensed work in Queensland. Even if they look at it and tell you it’s all fine, that’s not a legal sign-off. Your insurer will likely refuse a claim if they find unlicensed work in the property. Selling becomes a problem too, because pre-sale inspections will pick it up. The only real fix is pulling the work out and having a licensed contractor redo it from scratch.

In practice, the electrical work a homeowner can legally do on fixed wiring in Queensland is almost nothing. Changing a light globe is fine. A fuse cartridge can be swapped with the power off. Everything else needs a sparkie.

How often should you rewire a house?

Most homes never need a second rewire within a single owner’s lifetime. Modern copper TPS cabling, installed to AS/NZS 3000 and properly protected by RCDs, is designed to last 50 years or more.

What does need more regular attention is the inspection cycle. A safety check every ten years makes sense for any home over 30 years old. For pre-war Queenslanders or post-war brick homes that have never been rewired, an inspection is overdue regardless of when the last one happened, assuming one was ever carried out.

Insurance is worth thinking about too. Some Queensland insurers ask about wiring age during claims assessment, especially after a fire. A documented rewire with a compliance certificate sits far more favourably than an unknown electrical history.

How to choose an electrician for a rewire

A rewire isn’t the job to shop on price alone. The work is hidden inside the walls once it’s done, which means quality stays invisible until something goes wrong. There’s more on finding a great Brisbane electrician for jobs at this scale, but the short version is below.

A few things to confirm before you book. Make sure the contractor’s actually licensed in Queensland. The licence number should be on their quote. Cross-check it on the Electrical Safety Office register, that takes about thirty seconds and tells you whether the licence is current. Ask to see the certificate of currency on their public liability insurance too. A verbal “yes we’re insured” isn’t enough on a job this size.

The quote itself should be written, itemised, and detailed enough that you can see what’s included. Look for labour, materials, switchboard work, testing, certifications, and how any variation work gets handled. A single bundled figure isn’t enough. The compliance certificate at completion is non-negotiable, and any electrician unwilling to issue one isn’t worth the risk.

Local experience with comparable housing stock matters too. A sparkie who’s rewired ten Queenslanders in Wilston or Camp Hill already knows what to expect from the eleventh.

Three quotes is the standard advice, and it’s worth following. Just compare them properly. Scope, inclusions, and the electrician’s experience matter as much as the bottom-line number.

Need a Brisbane rewire quote?

Dawson Electric rewires homes across Brisbane’s inner-northern and inner-eastern suburbs, including Hamilton, Hendra, Clayfield, Wilston, Camp Hill, Hawthorne, Greenslopes, and Morningside. Every rewire is fixed-priced after on-site inspection. We’re fully licensed under the Queensland Electrical Safety Office, and a compliance certificate is issued at completion. Contact us for a rewire inspection.

Frequently asked questions

How much does it cost to rewire a house in Australia?

It depends on the property, but most jobs land between the low four figures and the low five figures. A small partial rewire sits at the bottom of that range. A larger older home with restricted access pushes toward the top. The variables that actually move the number are home size, age, how easily the cabling can be accessed, and what condition the switchboard’s already in. You’ll only get an accurate figure once an electrician’s been on site.

Is it worth rewiring a house?

If the wiring’s degraded or non-compliant, yes. Brittle insulation is what causes most electrical fires in older homes, and a rewire cuts that risk out entirely. The work also brings the installation up to AS/NZS 3000:2018, which insurers and buyers both care about. Brisbane buyers in older suburbs ask about wiring now — a documented rewire shifts a property from “what’s the electrical situation here” to a clean answer.

Can you rewire a house without removing walls?

In most Brisbane homes, yes. Most cable runs go through the underfloor and roof cavity, with only minor patching needed at outlet and switch points. Double-brick homes are the exception. Those usually need more invasive access in certain areas.

What’s included in a house rewiring quote?

A proper quote covers the cabling and new outlets, the switchboard upgrade where one’s required, and the RCD installation. Testing and the electrical compliance certificate are also included. The quote should spell out how variation work gets charged if anything unexpected turns up once the job’s underway.

Does rewiring increase home value?

Yes. The compliance certificate is the part that matters. In older Brisbane suburbs especially, buyers have learned to ask whether the wiring’s been touched and when. A house with paperwork showing recent compliant work has a clear answer. One without doesn’t, and that uncertainty shows up at the price. Insurers prefer it too.