
Full rough-in, fit-off, sub-metering and underground supply. We work to your builder's schedule and pass first inspection — every time.
No obligation · Response within 24 hrs
We'll be in touch within 24 hours with a detailed quote.
Call us direct: 0432 740 124
Full Granny Flat Electrical
We handle every stage of your granny flat electrical — so you don't have to chase multiple trades.
Rough-in stage — conduit, cabling, switchboard frame-up
Underground supply — trenching, conduit, connection to main grid
Sub-metering — separate metering for tenant billing
Fit-off — powerpoints, switches, lights, ceiling fans
Switchboard commissioning — RCDs, MCBs, safety switches
Optional extras — EV charger, solar pre-wire, data & CCTV

The Process
We review your plans and provide a clear, itemised quote within 24 hours.
We attend at the right stage — frame-up — and install all cabling and conduits.
We prepare for and attend the electrical inspection. We pass first time.
Once plastered, we return for final fit-off and switchboard commissioning.
Client Reviews
"JNM did the full electrical for our 2-bed granny flat. Turned up exactly when they said they would, passed inspection first time and the fit-off looks great."
"Got three quotes — JNM were by far the most detailed and professional. Clear scope, no surprises on the day, and the finish was excellent. Would use again."
"They handled the sub-metering, underground supply and even pre-wired for solar. Saved me a lot of headaches. Very knowledgeable team."
Get a detailed quote within 24 hours. We work with your builder's schedule.
Service Area
JNM Electrical provides granny flat electrical services across Hills District including Castle Hill, Baulkham Hills, Kellyville, Rouse Hill, Cherrybrook and surrounding suburbs.