How Much Does a Switchboard Upgrade Cost in Melbourne?

If you've been told your switchboard needs upgrading, the first question is usually: how much is this going to cost me?

The honest answer is that it depends. A straightforward single-phase upgrade for a small home is very different from upgrading a three-phase board in a commercial property. But we can give you realistic ranges based on hundreds of upgrades we've completed across Western Melbourne and Geelong.

Here's what you can expect in 2026.

Quick Price Summary

All prices include a compliance certificate (Certificate of Electrical Safety), which is a legal requirement in Victoria for any switchboard work.

What's Included in a Switchboard Upgrade?

A standard upgrade typically covers:

• Removal of the old board (ceramic fuses, rewirable fuses, or outdated breakers)
• Supply and install of a new switchboard enclosure
• Installation of residual current devices (RCDs/safety switches)
• Circuit breakers for each circuit
• Labelling of all circuits
• Testing and commissioning
• Certificate of Electrical Safety lodged with Energy Safe Victoria

If your home has warning signs like tripping safety switches, ceramic fuses, or flickering lights, an upgrade addresses all of those issues at once.

What Affects the Price?

1. Single-Phase vs. Three-Phase

Most homes in Melbourne run on single-phase power. If you have a three-phase supply (common in larger homes with ducted air conditioning, workshops, or pool equipment), the switchboard needs more space, more breakers, and more labour.

Three-phase upgrades typically cost 30-50% more than single-phase.

2. Number of Circuits

A two-bedroom unit might have 8-12 circuits. A four-bedroom home with a shed and pool could have 20-30. More circuits means a larger board, more breakers, and more time.

3. Condition of Existing Wiring

If your existing wiring is in good condition, it can often be re-terminated into the new board. But if the cabling is degraded, uses old colours, or doesn't meet current standards, some rewiring may be needed. This is the most common source of unexpected costs.

4. Meter Board Work

Sometimes the meter board (the panel your electricity distributor owns) needs upgrading too, particularly if you're going from single-phase to three-phase or if the existing metering is very old. This involves coordinating with your electricity distributor and can add $500-$1,500.

5. Location and Access

A switchboard that's easy to access on an external wall is quicker to work on than one buried in a garage behind shelving. Difficult access means more labour time.

6. Additional Requirements

Adding dedicated circuits for new appliances (EV chargers, air conditioning, induction cooktops) during the upgrade is the most cost-effective time to do it. We often combine switchboard upgrades with EV charger installation to save on labour. If you're considering solar EV charging, read our guide on solar excess EV charging to understand switchboard requirements.

Do I Need a Switchboard Upgrade?

Not every electrical issue requires a full board replacement. Sometimes adding a safety switch to an existing board or replacing a faulty breaker is sufficient. A safety inspection can assess your board and tell you whether a targeted fix or a full upgrade makes more sense.

That said, if your board has any of these, a full upgrade is almost always the right call:

• Ceramic or rewirable fuses
• No safety switches (RCDs) at all
• A board that's physically full with no room for new circuits
• Scorching, burn marks, or a burning smell
• An asbestos panel backing

Three-Phase Upgrades: What's Different?

Three-phase power is becoming more common in residential properties, particularly in newer estates across Point Cook, Tarneit, and Werribee where homes are built with ducted air conditioning and large appliance loads.

A three-phase switchboard is physically larger and more complex:

• Three incoming supply phases need individual main switches and RCDs
• Load balancing across phases matters for efficiency and safety
• More circuits are typical, since three-phase properties tend to be larger
• Distributor coordination may be required if upgrading from single-phase

If you're adding a three-phase appliance (like a large EV charger, workshop equipment, or commercial kitchen), the switchboard upgrade needs to account for that load from the start.

Commercial Switchboard Upgrades

For businesses, the considerations are different:

• Compliance deadlines: Landlords and building managers often require switchboard upgrades as part of lease conditions or building compliance audits
• Downtime: We schedule commercial work to minimise disruption, often completing upgrades outside business hours
• Emergency and exit lighting: Commercial boards typically need dedicated circuits for emergency lighting systems
• Three-phase as standard: Most commercial properties run three-phase, with higher amperage requirements

If you're fitting out a new retail or office space, the switchboard is the foundation of the entire electrical installation. See our shop fit-out electrical guide for a full breakdown of what's involved.

How Long Does a Switchboard Upgrade Take?

• Basic single-phase: 4-6 hours (one day)
• Standard single-phase: 6-8 hours (one day)
• Three-phase residential: 1-1.5 days
• Three-phase commercial: 1-3 days depending on complexity

Power will be off for most of the installation. We'll let you know in advance so you can plan accordingly.

Why Not Just Get the Cheapest Quote?

Switchboard upgrades are one area where cutting corners can be genuinely dangerous. A properly installed board will last 25+ years and protect your home every day. All switchboard work in Victoria must comply with AS/NZS 3000 (the Wiring Rules) and be accompanied by a Certificate of Electrical Safety.

Things to look for in a quote:

• Compliance certificate included (not an optional extra)
• Branded components (Clipsal, Schneider Electric, Hager, not unbranded imports)
• Safety switches on every circuit, not just lighting or power
• Clear scope of what's included and what might cost extra
• Licensed and insured electrician (you can verify licences at Energy Safe Victoria)

Get a Quote

Every switchboard is different, so the best way to get an accurate price is to have us take a look. We provide free, no-obligation quotes across Western Melbourne and Geelong.

Get a free switchboard upgrade quote or call us on 1300 797 267.