Everything we do with underground power

Locating · installation · repair — one crew

Since 2015Own locators, hydro-vac & diggersAuckland · Franklin · North Waikato

By utility

Power, underground

Underground power is where a strike is most dangerous and a bad install is most expensive to redo. We locate live and de-energised cables before anyone digs, and we trench, duct and lay new mains power from the boundary to wherever it’s needed.

Everything here is the civil side: locating, trenching, ducting and cable laying. Your electrician makes the final connection — we work alongside whoever you’re using, or can recommend one.

Other utilities:Water Gas Comms

Services that touch power

Need something done with underground power? Tell us the job — we’ll tell you straight.

Free, no-obligation quote · Mon–Fri 7am–5pm · Auckland, Franklin & North Waikato

Call us0800 779 588 Get a free quote

Google reviews

What customers say

5.0 on Google →

“Prompt service & fair pricing. Tony and his team — sharp eye for detail and out of the box problem solving paired with a high standard of workmanship.”
Richard La Trobe · Google · October 2026
“Really happy with the work to install our underground services. Highly recommend.”
Sarah Walworth · Google · October 2026
“The only company we trust… reliable, cost effective, and honest service from A to Z. 100% confidence in this company.”
Darrel Assink · Google · September 2026

Power work

Our Projects

North Waikato

Rural Power Mains Installation in North Waikato

Utility Works was commissioned to install a new power mains cable on a rural North Waikato property. The project involved existing services detection, excavator trenching, and hydro-vac works to keep the trench clear due to in-flow during the project, followed by installation of the three-phase cable and final connect and commission. The project was completed on time and within budget.

Read the case study

Tuakau, North Waikato

Services Detection & Mapping in Tuakau

A local power network provider in Pukekohe needed expert service detection and mapping. With multiple high-voltage cables traced and marked out, duct and drainage tracing, water mains tracing and multiple communications cables in the vicinity, the project required our specialist services and expertise.

Read the case study

Worth a read first

Guides & advice

1–3 of 4

Overhead to Underground Power Conversion in NZ: Cost, Process and Is It Worth It?

Most of the overhead lines you see in Auckland and the Waikato are the network's, and they are not going anywhere soon. The line from the street to your house is different. That one is usually yours, and it can be put underground. This guide covers what a conversion involves, who does which part, what decides the cost for a house, a lifestyle block and a subdivision, how long the lines company takes, and when it is worth doing.

Read the guide

Installing Power to a Shed or Sleepout in Rural Auckland and Waikato: Cost, Cable, Consents and Process

Running power to a shed, sleepout, pump or workshop sounds like a day with a trencher and a reel of cable. The cable is the easy part. Getting the size right over a long rural run, keeping the trench legal and findable, deciding whether the building itself needs consent, and sequencing the electrician and the digger so nobody waits are what make the difference between a connection that works for forty years and one that trips every winter. This guide covers all of it, including what decides the cost in Auckland, Franklin and the Waikato.

Read the guide

Underground Power Cable Installation in Pukekohe & Franklin: What Property Owners Need to Know

Underground power cable installation is one of the most common questions we get from property owners across Pukekohe and Franklin — usually alongside one specific question: what's this actually going to cost?

Read the guide

Power — FAQ'S

Do you do the electrical connection too?

We do the underground work — locating, trenching, ducting and laying the cable — and work alongside your electrician for the final connection and livening. If you don’t have one, we can recommend electricians we work with regularly.

Can you convert my overhead power to underground?

Yes. We trench and lay the new cable from the pole or pillar to the house, coordinate the changeover with your lines company and electrician, and reinstate the ground afterwards.

How far can you run power underground on a rural property?

Long runs are routine for us. The cable is sized for the distance and the load so the far end gets the voltage it needs, and we lay it in duct so it can be replaced or upgraded later without re-trenching.

Ready when you are.

Tell us what you’re seeing or what you’re planning. You’ll get a straight answer, a free quote and one crew that does the whole job.

Call us0800 779 588 Email usinfo@utilityworks.co.nz Get a free quote

Mon–Fri 7am–5pm · Waiau Pa, South Auckland · Auckland, Franklin & North Waikato