Overhead to Underground Conversion Sydney
Converting your service line to underground removes the wires from the front of your property permanently, and takes the trees and the weather out of the equation with them.
- Planned around your build. Best while ground is open.
- Sandstone or clay. Both normal; the method changes.
- One team, connection to switchboard
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*Same day call out and the $0 call out fee are subject to availability, location and job type. Conditions apply, ask us when you book.
What Is an Overhead to Underground Conversion?
It is replacing the overhead service line from the street with a new underground one, so supply runs below ground from the connection point to your meter position instead of through the air to a bracket on your building.
The overhead span comes down. The point of attachment is removed. A trench is cut from the connection point to the meter position, conduit and new cable installed, the connection made, the installation tested, and supply restored on the new route. What you are left with is no wire across the front of the property and no bracket on the fascia. From that point on you have an underground service line with a different maintenance profile entirely.
Why Do Sydney Owners Convert to Underground Power?
Three reasons, usually together.
Appearance. The honest primary driver on most jobs, particularly during a renovation where everything else is being brought up to standard and the overhead line suddenly looks like what it is.
Trees. If your property has mature canopy, the overhead service is a recurring problem: branches in the span, vegetation clearance, storm damage. Converting to underground ends it permanently rather than managing it every few years.
Exposure. Overhead services take the weather. Wind fatigues the attachment, salt eats fittings on coastal properties, and every serious storm season brings a run of failures and emergency call-outs. Underground removes that entire failure mode.
There is often a fourth: the existing service is due for replacement anyway, which makes converting a marginal decision rather than a whole new project.
When Is the Right Time to Convert?
While the ground is already open.
Trenching is a real component of the cost, so a conversion done during a renovation, landscaping job, driveway replacement or new build is significantly more efficient than the same job in isolation. If you are already digging up the front for drainage, a path or a pool, that is the moment.
The second good moment is when the existing overhead service needs work anyway. If you have been told the point of attachment is defective through an electrical defect notice, the decision is no longer between doing nothing and converting; it is between replacing overhead and converting to underground.
The third is when supply is being upgraded regardless. If the consumer mains or capacity are being uprated for three phase, an EV charger or a second dwelling, the cable is changing anyway, so see power supply upgrades and plan them together.
Our Services
All your Level 2 electrical needs covered
Our team has the skills, expertise and accreditation to cover any Level 2 requirement they come across. Every service is backed by safety, quality and experience.
Power Connect and DisconnectConnect a new property to the grid, or disconnect safely for demolition and works.
MeteringMeter installs, relocations and changes, with the paperwork handled.
Overhead Service LinesRepair, replace and install overhead service lines and storm damaged connections.Underground Service LinesUnderground mains installed, located and repaired, including overhead conversions.
Consumer MainsInspect, repair, upgrade or install the mains feeding your switchboard.
Switchboard UpgradesAgeing fuse boards replaced with a compliant board and safety switches.We handle 23 Level 2 services in total. See the full list.
Why Choose Sydney Level 2 Electrician for Underground Conversions
Renovating, and tired of the wire cutting across the front of the house? Converting an overhead service line to underground is one of the few electrical jobs people actually want rather than merely need. It tidies the front of the property, ends the annual argument with the trees, and takes the most storm-exposed part of your installation out of the storm.
Sydney Level 2 Electrician carries out overhead to underground conversions across Sydney and the Blue Mountains, with 15 years of connection work behind us. We are an accredited Level 2 ASP under the NSW Government's ASP Scheme and authorised on both the Ausgrid and Endeavour Energy networks, which matters on a conversion because the job touches the network connection itself. Everything is completed to AS/NZS 3000:2018 and the NSW Service and Installation Rules, documented with a Certificate of Compliance for Electrical Work, and backed by our Lifetime Labour Warranty. Free quotes on every conversion.
How Does Sydney's Ground Affect an Underground Conversion?
Considerably, and it is the biggest variable in what a conversion costs.
Across the north of Sydney, the harbour foreshore, north shore and northern beaches you are largely on sandstone. Trenching means rock saws and breakers rather than a trencher, and the work takes longer. Entirely normal; it just needs to be in the quote honestly rather than discovered halfway.
Across much of the west and south west the ground is shale and reactive clay. Easier to open, but it moves seasonally, which is why conduit and bedding are worth doing properly rather than quickly.
Low-lying land near the rivers and creeks brings water into the trench and into pits, which affects how joints and access points are built.
Then there is what is already buried: water, gas, telecommunications, stormwater, irrigation and whatever previous owners left. Locating services before excavation is part of the job, not an optional extra.
Where we work
Level 2 electricians across Greater Sydney
We are on the road across the whole metropolitan area, from the CBD and the Eastern Suburbs out to Penrith, up to the Hills District and down through the Sutherland Shire. If you are not sure whether we reach you, call and ask.
What Else Needs Planning in a Conversion?
A conversion touches more than the cable.
Reinstatement. Whatever the trench crosses has to go back: lawn, paving, driveway, garden beds. Worth deciding early whether you are reinstating or replacing, particularly if landscaping is happening anyway.
Council permits. Where the trench crosses the verge or footpath, the local council has requirements and they vary between LGAs. We handle the paperwork, but the lead time is real.
Trees. Root zones of significant trees are protected in most Sydney councils, and a trench through one is a separate approval. The trees that made you want to convert are sometimes the ones complicating the trench.
Supply interruption. Power comes off during the changeover, usually a single day. If you work from home or run a business from the property, see power connect and disconnect, and for commercial sites an after-hours booking is often the better answer.
Since the route changes entirely, the consumer mains are almost always replaced as part of a conversion, and where the meter position moves too it pairs with a meter box relocation.
Talk to Us About Converting to Underground
The right conversation happens before the landscaping is finalised, not after.
Call 0485 824 714 or send an enquiry with your address and what else is planned on the property, and we will quote free. We will look at the connection point, the likely route, the ground and everything else happening, then give you a realistic cost and timeline. Sydney and the Blue Mountains.
Ready to book?
How it works
A simple process for excellent service, right when you need it.
01Contact our team
Reach out by phone, email or the contact form to start the process.
02Discuss the details
Tell us what you need, including property information and any specific concerns.
03Assessment and quote
We schedule a visit or request photos, then provide a detailed quote and timeline.
04Confirmation and booking
Once the quote is approved we book your job at a time that suits you.
05Job completion
We arrive on time with every tool needed to finish the work properly.
06Final check and payment
We inspect and test the work before finalising the paperwork and compliance.
Network checker
Are you on Ausgrid or Endeavour Energy?
Every Level 2 job is lodged with the network that owns the wires in your street, and the paperwork differs between the two. Type your suburb and we will tell you which one you are on. We are accredited for both, so either way you are covered.
A guide only. Network boundaries can split a single street, so we always confirm the network before we lodge anything.
FAQs
Overhead to Underground Conversion questions, answered
The things people ask us most about overhead to underground conversion in Sydney. If yours is not here, call and ask.
When is the cheapest time to convert to underground?
While the ground is already open. If you are doing a driveway, landscaping, a pool or a knockdown rebuild, the trenching cost largely disappears into work you are paying for anyway. Converting as a standalone job is the expensive way to do it.
Does the pole outside my house get removed?
No. The network pole in the street stays. What changes is the run from that pole to your property: instead of a wire crossing your frontage, the supply drops down the pole and runs underground to your switchboard.
What if we hit sandstone?
Common across much of Sydney, and it changes the method rather than the outcome. Rock means saw cutting or rock breaking instead of a straight dig, which affects time and cost. We would rather flag that risk in the quote than surprise you with a variation.
Do I need council approval?
The electrical work is approved through the distributor, not council. Council may be involved if the trench crosses a footpath, nature strip or council land, or if you are in a conservation area. We will tell you if your site triggers that.
How long is the power off?
The outage is only at the changeover, not for the whole project. Trenching, conduit and cable are installed live, then supply is switched from the old overhead line to the new underground one in a single planned window.
Get in touch
Need a Level 2 electrician in Sydney?
Metering, service mains, private poles, defect notices and emergency call outs. Tell us what is happening and we will tell you what it takes, what it costs and when we can be there. No obligation either way.
Tap to call, 24/70485 824 714- Free quote, no obligation
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