What actually changes the price
The charger unit itself is only part of the cost. What moves the number is the cable run from your switchboard to the parking spot, whether that run is through an accessible garage wall or across a longer outdoor distance, and whether your switchboard already has a spare circuit position or needs work first.
A short, simple run to a board with spare capacity sits toward the $800 end. A longer run, conduit through brick or render, or a board that needs a new circuit added pushes it toward $2,500.
Single phase versus three phase, what a Parramatta home actually needs
Most homes in the Parramatta area run single-phase power, and a 7kW single-phase charger is enough to fully charge most EVs overnight. Three-phase gives faster charging, but it only matters if your home already has three-phase supply or you're planning to add it, and it adds $500 to $1,000 to the job plus a more involved network application.
For most homeowners, single-phase is the right call. Three-phase makes sense if you're charging multiple vehicles or you already have three-phase for other reasons, like a ducted system or a home office setup.
Does your switchboard need to be upgraded first
This is the step that catches people out. If your board doesn't have a spare circuit position, or it's an older board without the capacity to add a 7kW dedicated circuit safely, the EV charger installation becomes a switchboard job first. An electrician needs to check this on site before quoting, not after the charger's already been bought.
The one step homeowners forget: network notification
Since 2025, most 7kW single-phase installs need a notification sent to Ausgrid or Endeavour Energy, whichever network your property sits under, before the charger goes live. It's not the same as an approval process, it's a straightforward notification your electrician handles as part of the job. Three-phase is different, that needs a formal connection application, and in some cases Ausgrid or Endeavour will need to assess whether your street supply can handle the extra load.
If an installer hasn't mentioned this step at all, that's worth asking about before you book. For the full rundown on notifications, strata rules and rebates, see our EV charger rules and rebates guide.