New Electrical Connections for Duplexes, Granny Flats & Subdivisions Sydney
A brand-new point of attachment, metering and consumer mains — managed end to end for every extra dwelling you create.
Building a duplex, adding a granny flat or subdividing a block all add up to the same question: how does the new dwelling actually get connected to the grid?
High Demand Electrical designs and installs the whole connection — the distributor application, the point of attachment and metering, the consumer mains and switchboard, and the compliance sign-off — as one managed project, whether it's one extra meter or a fully subdivided multi-lot site.
Building a duplex, adding a granny flat or subdividing a block all add up to the same question: how does the new dwelling actually get connected to the grid?
High Demand Electrical designs and installs the whole connection — the distributor application, the point of attachment and metering, the consumer mains and switchboard, and the compliance sign-off — as one managed project, whether it's one extra meter or a fully subdivided multi-lot site.
New Electrical Connections
AS/NZS 3000, SIRNSW & Distributor Requirements
Every new connection is governed by AS/NZS 3000 for the consumer-side installation, while the Service and Installation Rules of NSW (SIRNSW) set out how the network-side point of attachment and metering are approved and connected. Getting the application wrong or lodging it late is one of the most common causes of a delayed settlement or occupation certificate on a subdivision or duplex build.
HDE builds distributor timeframes into the project plan from the very first site assessment, and if you're not sure which network area your property sits in before applying, check it in seconds with our postcode checker.
HDE builds distributor timeframes into the project plan from the very first site assessment, and if you're not sure which network area your property sits in before applying, check it in seconds with our postcode checker.
New Electrical Connections
Common Projects That Need a New Electrical Connection
Every one of these adds a dwelling or a lot the existing supply wasn't designed for.
1
Duplex & Dual Occupancy
Two dwellings on one title usually means two meters and, often, a new point of attachment.
2
Granny Flats & Secondary Dwellings
A self-contained dwelling that needs its own supply, sub-board or dedicated meter.
3
Land Subdivision
Splitting one lot into several separately titled lots, each needing its own service and connection.
4
Knockdown Rebuilds
A full rebuild is often the moment the whole connection is upgraded rather than reused as-is.
Most of these projects also need a temporary builder's supply during construction, well before the permanent connection is ready to energise.
New Electrical Connections
How High Demand Electrical Delivers a New Connection
Site Assessment & Design
We confirm how many new dwellings or lots need connecting, whether metering is shared or individual, and design the supply and switchboard layout around that.
Distributor Application
We lodge the connection application with Ausgrid, Endeavour Energy or Essential Energy, whichever services the site, for the new point of attachment and metering.
Consumer Mains & Switchboard
Consumer mains run from the new connection point to each dwelling's switchboard, sized and installed to AS/NZS 3000.
Testing & Energisation
Full testing, a Certificate of Compliance for each dwelling, and coordination with the distributor to energise the new connection.
New Electrical Connections
Common Projects That Need a New Electrical Connection
Simplest Scope
Granny Flat Connection
A secondary dwelling added to an existing property, off the existing supply or with its own meter.
- Often no new point of attachment
- Shared or individual metering
- Fastest to approve and schedule
Most Common
Duplex Connection
Two dwellings on one title, each usually needing its own meter and sometimes a new point of attachment.
- Individual metering per dwelling
- Distributor approval required
- Often paired with a temporary builder's supply
Largest Scope
Subdivision Connection
A block split into multiple titled lots, each requiring its own service and connection.
- New point of attachment per lot
- Coordinated with civil & subdivision works
- Longest distributor lead time
Fully Licensed
Our Energy Providers
Authorised by Sydney's major networks
Related Services
Related Power Infrastructure Services
Consumer Mains Installation
New or replacement consumer mains from the meter to the switchboard.
Temporary Builder Supply (Duplex/Triplex)
Power on-site while the permanent connection is being approved and installed.
Temporary Building Supply Installation
The general temporary supply service for any new build or knockdown rebuild.
Power Supply Upgrades
When an existing dwelling's supply needs more capacity rather than a new connection.
Single-Phase to Three-Phase Upgrade
For larger dwellings or shared services that need three-phase capacity.
Switchboard Upgrades
New boards sized correctly for each newly connected dwelling.
Strata Main Switchboard and Consumer Mains
What’s Included in a Commercial Power Supply Upgrade
Site Assessment & Design
Confirming how many connections and meters the project actually needs before anything is quoted.
Distributor Application
Lodged and managed with Ausgrid, Endeavour Energy or Essential Energy on your behalf.
Temporary Builder's Supply
Power on-site for tools and amenities before the permanent connection is ready.
Consumer Mains Installation
New mains run from the connection point to each dwelling's switchboard.
Metering
Shared, sub-metered or fully individual metering depending on council consent and how the dwelling is tenanted.
Testing & Compliance
Full testing and a Certificate of Compliance for Electrical Work per dwelling.
Energisation Coordination
Timed with the distributor so every new meter goes live without unnecessary delay.
New Electrical Connections
Why High Demand Electrical
High Demand Electrical holds both Level 1 network-accredited and Level 2 ASP electrical contractor accreditation (EC Licence 397193C), certified to the ISO 9001, ISO 45001 and ISO 14001 standards. We lodge the distributor application, install the consumer mains and switchboard, and hand over the compliance certificate for every new dwelling — so a duplex, granny flat or subdivision connection is one quoted, managed project instead of separate quotes from separate trades.
We service builders, developers and homeowners across Sydney, and every project starts with a proper site assessment rather than a price over the phone, since the number of dwellings, metering arrangement and network area all change the right-sized scope.
We service builders, developers and homeowners across Sydney, and every project starts with a proper site assessment rather than a price over the phone, since the number of dwellings, metering arrangement and network area all change the right-sized scope.
Frequently Asked Questions
FAQs
How long does a new electrical connection take for a granny flat or duplex?
A straightforward granny flat connection off an existing supply is often completed within a few weeks once the distributor application is lodged. A duplex or subdivision creating a brand-new point of attachment takes longer, since it depends entirely on Ausgrid, Endeavour Energy or Essential Energy's own approval and connection scheduling.
Does a granny flat need its own meter?
Not always. Some secondary dwellings run off the main property's existing meter with a sub-board, while others need a separate meter, particularly if the granny flat will be separately tenanted or the council consent requires individual metering. We confirm which applies during the site assessment.
Who approves a new electrical connection for a subdivision in Sydney?
Your network distributor — Ausgrid, Endeavour Energy or Essential Energy depending on the property's location — approves every new point of attachment and any change to the network connection. HDE lodges and manages that application as part of the job.
Is a new electrical connection Level 1 or Level 2 work?
Both. The network-side connection — the point of attachment, metering and the link back to the distributor's network — is Level 1 accredited work. The consumer mains, switchboard and everything on your side of the meter is Level 2 work. HDE holds both accreditations.
Do I need a temporary builder's supply before the permanent connection is ready?
Yes, for almost every duplex, subdivision or new dwelling build. A temporary builder's supply powers tools and site amenities during construction, well before the permanent connection, switchboard and metering for the finished dwellings are ready to energise.
Ready To Connect Your Duplex, Granny Flat or Subdivided Lot?
Every connection starts with a proper site assessment before we confirm scope or pricing — the number of dwellings and the network area change the job more than anything else.
Get A Quote
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Powering Your Needs with Expertise
If you’re looking for a reliable, experienced, and prompt electrician, look no further than High Demand Electrical. We cater to all your electrical needs, from routine maintenance to emergency repairs and complete system installations. Our skilled team is committed to providing professional service that ensures your electrical systems run smoothly. Whether it's a small task or a large project, give us a call today. Let us meet all your electrical demands with the quality and reliability you deserve.
