How to Get Separate Metering for a Granny Flat

Why It's Usually Required, Not Optional

Most Sydney councils require separate metering as a condition of granny flat or dual occupancy approval, particularly if the secondary dwelling will be rented independently. Even where it's not mandated, separate metering gives each tenancy its own NMI (National Metering Identifier) and billing account, removing any dispute over usage.

The Process

We start with a site assessment to confirm switchboard capacity and cable runs, then lodge a metering application with your network operator to establish a new connection point and NMI for the secondary dwelling. A new Type 4 smart meter is installed and registered with your chosen retailer, and the physical wiring separation is completed at the switchboard.

For larger secondary dwellings with heavier loads — a granny flat with ducted air conditioning, for example — CT metering may be recommended instead of a standard direct-connect meter.

Timeline and Cost Factors

Most granny flat metering jobs are completed within a day once the network application is approved, though approval timeframes vary by distributor. Cost depends on cable run length, whether the existing switchboard has capacity for a second connection, and whether any consumer mains work is needed to support the split.