Overhead to Underground Mains Conversion
Say goodbye to your private pole and overhead wires. We design, trench, conduit, and switch your supply to underground mains — removing the pole entirely and giving your property a cleaner look and more reliable supply.
CALL us NowOverhead to Underground Conversions
Why Convert Overhead to Underground?
Underground mains have become the standard on new Sydney developments for good reason: they're more reliable, safer, visually cleaner, and immune to storm damage that brings down poles and service cables. For existing properties, conversion is a one-off upgrade that solves a long list of problems.
Conversion is often combined with a bigger renovation, a solar/battery install, or a pole that's reaching end of life anyway — getting more value from the project than a like-for-like replacement.
Conversion is often combined with a bigger renovation, a solar/battery install, or a pole that's reaching end of life anyway — getting more value from the project than a like-for-like replacement.
Overhead to Underground Conversions
Benefits of Going Underground
rainy
No More Storm Outages
Underground cables aren't affected by fallen trees, high winds or lightning strikes — the most common causes of pole failure.
block
Pole Removed
Permanent removal of your private pole and all overhead service cabling. Cleaner sightlines, more usable space.
home
Property Value Uplift
Underground supply is a clear plus at resale. Buyers don't inherit the future cost of pole replacement.
battery_full
Room for Capacity
New underground mains can be sized for three-phase, solar export, EV charging, or a larger future load.
Overhead to Underground Conversions
Our Conversion Process
Site Survey
Assess trenching route, soil, existing services, driveways, landscaping and network connection point.
Design & Network Application
Engineer a compliant route, lodge underground connection paperwork with Ausgrid or Endeavour Energy.
Trenching
Dig the cable trench to required depth, avoiding other services.
Conduit & Cable
Install conduit, pull new underground mains cable from street pit to your switchboard.
Switchover & Pole Removal
Network de-energises, we switch supply, remove old pole and overhead service cable.
Restore Surfaces
Backfill trenches, reinstate lawn, paving or concrete, tidy up the site.
Compliance
Lodge certificate of compliance and network acceptance paperwork.
Overhead to Underground Conversions
What Affects the Price
- Trenching distance from the street to your switchboard
- Surface types to cross: lawn (cheapest), pavers, concrete, driveways
- Underground obstacles: existing gas, water, or communications services
- Single-phase vs three-phase capacity
- Switchboard upgrade if existing board is undersized
- Pole removal complexity (rural, large timber, shared boundary)
A typical residential Sydney conversion on a standard block runs $15,000–$30,000 all-in. We give fixed-price quotes after the site survey — no surprises.
Overhead to Underground Conversions
Why HD Power Pole Sydney
Licensed Level 2 ASP
Full authorisation for network connection work, overhead removal, and underground mains energisation.
End-to-End
Design, paperwork, trenching, cable, switchover, pole removal, surface reinstatement — one contractor.
Minimal Disruption
Typical outage on switchover day is 6-8 hours. We schedule with you and give advance warning.
Fixed-Price Quotes
Written itemised quote after the site survey. Includes everything, GST inclusive.
Frequently Asked Questions
FAQs
How much does an overhead to underground conversion cost in Sydney?
A typical residential conversion on a standard Sydney block runs $15,000-$30,000 all-in, covering design, network paperwork, trenching, conduit and cable, switchover, pole removal, and surface reinstatement. We provide a fixed-price, GST-inclusive quote after a site survey, so there are no surprises.
What affects the price of an underground conversion?
Key factors are the trenching distance from the street to your switchboard, the surfaces to cross (lawn is cheapest, pavers, concrete and driveways cost more), underground obstacles like existing gas, water or communications services, whether you need single or three phase capacity, whether your switchboard also needs upgrading, and how complex the pole removal is.
How long does the switchover take and will I lose power?
The typical outage on switchover day is 6-8 hours while the network de-energises your supply, we switch it over to the new underground mains, and remove the old pole and overhead cable. We schedule this with you in advance.
Do I need network approval to convert to underground mains?
Yes. As a Licensed Level 2 ASP, we design a compliant route and lodge the underground connection paperwork with Ausgrid or Endeavour Energy on your behalf, then lodge the certificate of compliance and network acceptance paperwork once the job is done.
Can an underground conversion support solar, EV charging or three phase power?
Yes. New underground mains can be sized upfront for three-phase supply, solar export, EV charging, or other future load increases — it's a common reason people combine a conversion with a bigger renovation or solar/battery install.
What happens to my old private pole?
It's permanently removed, along with all overhead service cabling, once the new underground supply is energised — leaving cleaner sightlines and more usable space on your property.
Ready to Ditch the Pole?
Book a site survey. We'll assess feasibility and give you a fixed-price conversion quote.
Ready to secure your property with Power Poles service?
Fill out the form and our expert team will get back to you shortly. Whether it’s an emergency or a planned installation, we’re ready to help—fast, safe, and professional.
.png)