How Much Does a Switchboard Upgrade Cost in Cairns?

If you’ve been quoted a flat “switchboard upgrade” price over the phone without anyone looking at your board, be a little wary. A switchboard upgrade can be a quick, straightforward swap or a bigger job, depending on what’s behind the door. That’s why we inspect first and give you a written quote after.

Here’s what moves the price.

What affects the cost

How many circuits you have. More circuits means a bigger board, more breakers and more time to reconnect and test everything.

What protection you’re adding. Modern boards have safety switches (RCDs) protecting your power and lighting circuits. The more circuits that need protection, and how it’s arranged, affects both the parts and the labour. Some setups use combined breaker-and-safety-switch units (RCBOs), which cost more per circuit but isolate faults more precisely.

The condition of the wiring. If the cables coming into the old board are brittle, damaged or undersized, they may need attention before the new board can be connected properly. It’s much better to find that out at the inspection than halfway through the job.

Asbestos. In older homes, the board may be mounted on an asbestos-cement backing panel. It’s safe while it’s undisturbed, but it can’t just be drilled or cut, and removing it properly adds time and cost. Read more in asbestos behind your switchboard.

Single-phase or three-phase. Most homes are single-phase. Three-phase supplies have more to them, so the board and the work are bigger.

Where the board is. A board that’s easy to reach inside a garage is quicker than one squeezed into a tight or awkward spot. Outdoor boards near the coast may also need extra care for corrosion.

What else you’re adding. Solar, a battery or an EV charger may need a bigger board, more space or a dedicated circuit. Doing it all together is usually cheaper than two separate visits.

Changes to the supply. If the work involves the meter, the service line or the connection to the network, the network provider may need to be involved, which affects both cost and timing.

What a proper quote should include

A good written quote should tell you, in plain terms:

• The scope: what’s being replaced and what protection is included
• The materials, so you know what’s going in
• Any exclusions, like asbestos removal or repairs to damaged wiring
• The timeline, including how long the power will be off
• That the work will be tested and certified when it’s done

Be cautious of a quote with no breakdown, or one that gives a price without ever seeing the board.

Why we inspect first

We check the circuits, the wiring condition, whether there’s asbestos, the phase and what else you’re planning. Then you get a written quote covering scope, materials and timeline, with no surprises mid-job. If something unexpected turns up, we tell you and price it separately, and we don’t do it without your agreement.

Is it worth it?

An old board with ceramic fuses and no safety switches is one of the most common causes of electrical problems in older homes. Upgrading protects the people in the house as well as the appliances, and it’s often a requirement before adding solar or other big loads. Have a look at the signs your switchboard needs upgrading if you’re not sure yours is due.

To get a fixed quote on your upgrade, get in touch and we’ll book a time to have a look.