What actually happens when you start knocking down walls without thinking about your electrical setup? Honestly? You end up with blown budgets, endless delays, and a home that doesn’t work the way you hoped.
Electrical planning should happen before your renovation begins. Knowing what your current system can handle, where you need power points, and what new electrical needs you may have can help prevent extra costs and changes later.
A renovation is a good time to fix old wiring, add new outlets, improve lighting, and prepare for appliances and technology you may want in the future. Planning these things early can make the whole project easier and help your finished home work better for you.
So, what electrical work should you think about before the renovation starts? Let’s look at the key things to plan before the walls come down.
Key Takeaways
- Check your current system: Make sure your electrical system can handle the changes.
- Plan power points: Decide where you will need outlets before the walls are closed.
- Think ahead: Leave room for new appliances, lighting, and technology.
- Plan your lighting: Work out where you need lights and switches in each room.
- Get professional help: Electrical work should be planned and carried out by a qualified electrician.
Why Bother With Electrical Planning Before You Start?
Let’s be honest, electrical planning isn’t glamorous. Everyone wants to pick out kitchen benchtops, bathroom tiles, and those stunning light fixtures they saw online. Nobody gets excited about switchboards.
But here’s the reality. Once those walls are closed up, changing anything electrical becomes a nightmare. Cutting into fresh plaster, repainting, spending way more than you would have if you’d just planned ahead, it’s a headache nobody wants.
Take the classic example. A homeowner renovates their kitchen, installs a beautiful induction cooktop, and then discovers their old wiring can’t handle it. Suddenly they’re ripping open brand new cabinets to run new cables. The cost? Thousands. The frustration? Off the charts.
Don’t be that person.
What’s Your Current Setup Actually Like?
Before you can plan anything, you need to know what you’re working with. And no, that doesn’t mean just glancing at your switchboard and hoping for the best.
The Switchboard
A qualified electrician will open up that grey box and check a few things. Is it one of those old ones with ceramic fuses that look like they belong in a museum? Or does it have proper circuit breakers? They’ll also check how many spare slots you’ve got, because if there’s no room for new circuits, you’re looking at an upgrade.
The main switch rating matters too. Most Sydney homes have either 63, 80, or 100 amp mains. If yours is on the lower end and you’re adding air conditioning, an induction cooktop, and maybe an EV charger down the track, that’s going to be a problem.
The Wiring
If your home was built before the 1980s, there’s a decent chance the wiring is getting tired. Deteriorated insulation, undersized cables-the works. You might notice warning signs without even realising it. Lights that flicker when the fridge kicks in. Power points that feel warm. Breakers that trip for no apparent reason.
None of that is normal, and none of it should be ignored. A proper inspection from a residential electrician in Sutherland Shire will tell you exactly what shape your wiring is in and what needs replacing.
The Load Calculation
Your electrician will also do a load calculation, basically adding up everything you’ve got running now, plus everything you’re planning to add. If the total exceeds what your current system can handle, you’ll need an upgrade. It’s not complicated, but it’s absolutely essential.
Where Should You Actually Put Your Power Points?
Here’s where most people get it wrong. They look at a blank wall, think “two outlets should be fine,” and then spend the next ten years juggling power boards like a circus act.
Think About How You Actually Live
The old rule of thumb, one outlet for every two metres of wall space is pretty outdated. A better approach is to think about how you’ll actually use each room.
In the kitchen, you’ll want at least six to eight outlets. Maybe more if you’re a serious home cook. Think about where your appliances will live; the kettle, toaster, coffee machine, blender, maybe an air fryer. Plus you’ll need dedicated circuits for the oven, cooktop, dishwasher, and fridge.
Living rooms are another trap. Everyone wants a TV, gaming console, soundbar, and a few floor lamps. That’s four outlets right there, and you haven’t even charged your phone yet.
Home offices are brutal if you’re working from home. Computers, monitors, printers, chargers, it adds up fast. You might even want a dedicated circuit just for your office gear.
Bedrooms, bathrooms, garages; each space has its own needs. And don’t forget about outdoor areas if you’re planning to entertain.
Some Appliances Need Their Own Circuit
Certain appliances are power-hungry beasts. Ovens, cooktops, air conditioning units, hot water systems, and EV chargers all need their own dedicated circuit. Share a circuit between your oven and your air conditioner, and you’ll be resetting breakers more often than you’d like.
The smart move is to identify all these heavy hitters before the renovation starts. That way, your electrician can run the right cabling while the walls are open, saving you from a costly retrofit later.
Here’s a quick guide to get you thinking about each room:
| Room | Outlets You’ll Want | Special Circuits Needed |
| Kitchen | 6-8 minimum | Oven, cooktop, dishwasher, fridge |
| Living room | 4-6 | Entertainment setup |
| Home office | 4+ | Computer equipment |
| Bedrooms | 3-4 each | Bedside charging, TV |
| Garage | 2-3 | EV charger, tools |
| Bathroom | 2-3 | Heated towel rails, exhaust fans |
When Does Your Switchboard Need Replacing?
You might be wondering if you can just get away with a few tweaks, or if you’re looking at a full replacement. Here’s when you definitely need to upgrade.
If your switchboard still uses ceramic fuses, it’s time. If there are no safety switches protecting your circuits, it’s definitely time. If you’re adding new circuits and there’s no physical space left in the board, you’ve got no choice. And if your main switch is rated below what your home actually needs, you’re essentially driving with the handbrake on.
A residential switchboard upgrade is usually a one-day job for a qualified residential electrician Sutherland Shire. They’ll remove the old fuse board, install modern circuit breakers and safety switches, upgrade the main switch if needed, and label everything clearly.
The benefits are obvious, proper protection against electric shocks, breakers that trip instantly on overload, and spare slots for future additions. And yes, it’s notifiable work, which means your electrician will handle all the paperwork and inspections.
How Can You Set Yourself Up for the Future?
Here’s something most people don’t think about until it’s too late. Renovating gives you this golden opportunity to make your home ready for stuff that hasn’t even been invented yet. Sounds dramatic, but it’s true. You don’t need to install everything right this second. What you do need is to make it dead easy to add things later.
Empty Conduits Are Brilliant
Right, so this sounds boring. I know. Empty pipes in your walls. Thrilling stuff. But honestly? It’s the smartest thing you can do.
When your walls are open, you can drop in these little plastic tubes-conduits, they’re called, that run from your switchboard to wherever you might want power down the track. Later on, when you decide you want solar panels or an EV charger or maybe some fancy network cabling, you just pull the new wires through. No cutting into plaster. No repainting. No crying over ruined walls.
A mate of mine did this during his reno. Put conduits everywhere. Everyone thought he was being paranoid. Three years later, he installed solar panels and the sparky practically kissed him. Took about twenty minutes to run the new cables. Cost him next to nothing. Meanwhile, his neighbour had to cut holes in his ceiling and patch everything up. Guess who was smug?
So yeah. Run conduits. Future you will be very, very grateful.
Smart Home Pre-Wiring
This one gets people. They hear “smart home” and think they need to drop ten grand on gadgets they don’t even understand. But that’s not the point.
The point is just getting the cables in while the walls are bare. Lighting controls. Security cameras. Motorised blinds. Whole-home audio. The cabling itself is cheap, like, really cheap. The labour to install it later? That’s where the costs get ugly.
Same goes for your internet and Wi-Fi setup. Working from home is pretty standard now, and having Ethernet points in the right spots makes a massive difference. Nobody wants to rely on dodgy Wi-Fi while they’re trying to join a Zoom call. Get the cabling done while everything’s open. Your internet speeds will thank you.
Don’t Forget the EV Charger
Electric cars are everywhere. They’re not going away. Even if you don’t have one now, chances are you’ll get one in the next few years. Maybe your next car. Maybe the one after that.
Running a dedicated circuit to your garage or carport during the renovation means you’re ready to install a charger the moment you need it. No drama. No extra cost. Just plug and play.
A bloke down the street bought an EV last year and had to get his entire garage rewired. Cost him a packet and took three days. If he’d done it during his reno, it would have been a fraction of the price and taken about ten minutes. Food for thought.
What About Lighting?
Alright, lighting. This is the fun bit. Everyone loves picking out light fixtures. But good lighting is about more than just finding something pretty to hang from the ceiling
The Three Layers
Professional designers talk about three layers of lighting. Ambient is your general illumination, the stuff that stops you from walking into furniture. Task lighting is focused light for specific activities, like under-cabinet lights in the kitchen so you can actually see what you’re chopping. Accent lighting highlights features; pictures, architectural details, that sort of thing. It adds depth and makes a room feel finished.
Most people only think about the ambient bit and forget the rest. Then they wonder why their kitchen feels gloomy or their living room looks flat.
Decisions to Make
You’ll need to decide on things like downlights versus pendants. This affects where the wiring goes and how your ceiling joists are laid out. Dimmer switches are worth considering in living areas and bedrooms, they let you control the mood and save energy at the same time.
Under-cabinet lighting in the kitchen is practically essential. I can’t tell you how many people skip this and then regret it every single time they try to chop vegetables in their own shadow. Bathroom lighting needs to handle demister pads and exhaust fans. Outdoor lighting covers security, pathways, and entertaining areas.
And here’s something everyone should do: switch to LED throughout. They use about 80% less energy than traditional bulbs and last for years. You’ll save on your power bills and you won’t be changing bulbs every five minutes. Win-win.
Who Should You Bring In, and When?
Here’s the thing about electrical planning—it shouldn’t happen in a vacuum. Your electrician, your builder, and your designer all need to be talking to each other from day one.
The Right Timeline
The ideal time to bring in your electrician is during the design phase. Not when the walls are already open. Not when you’re halfway through demolition. During the design phase.
They can advise on power point placements that don’t clash with cabinetry. They can suggest lighting layouts that suit your architectural plans. They can spot potential issues before they become expensive problems.
Once demolition happens, the electrician can start the rough-in work. This means running cables and installing conduits before the insulation and plaster go on. A final inspection happens just before the walls are sealed—this is your last chance to make sure everything’s where it should be.
After painting, the electrician returns for the fit-off stage. That’s when they install switches, outlets, and light fittings. Then comes testing and certification.
Get the timing right and the whole process is smooth. Get it wrong and you’ll be making compromises you don’t want to make.
Why Local Knowledge Helps
Hiring someone who knows your area is always a bonus. A local sparky understands council requirements and the specific quirks of homes in your region. They know the paperwork, the regulations, and the common issues that pop up. It saves time, saves stress, and saves money.
Wrapping It All Up
Getting your electrical planning right makes the difference between a renovation you love and a renovation you regret. Simple as that.
Take the time to get your switchboard checked. Think carefully about where you want your power points. Run those extra conduits while the walls are open. Future-proof where you can. And whatever you do, don’t try to DIY electrical work. It’s dangerous, it’s illegal, and it’s just not worth the risk.
A successful renovation is about the details you can’t see as much as the ones you can. Get the electricals right, and everything else falls into place.
Feeling a bit overwhelmed? That’s fair enough. There’s a lot to think about, and it’s easy to miss things when you’re juggling a hundred other decisions. A quick chat with an experienced electrician can clear up all those questions and give you the confidence to move forward.
For expert advice tailored to your renovation, reach out to us at CGF Electrical.