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Out of the ordinary

We’re a tunnelling and microtunnelling specialist with expertise in the water, wastewater, stormwater, power & electricity and infrastructure sectors. We've been in business for 35 years and work throughout New Zealand for public and private sector clients.


We offer a range of services including provision of specialist plant and equipment.

We own and operate specialist plant and can procure plant through our international supply chain. Many of our achievements have been industry-firsts:

  • First curved pipe jack using gyroscopic guidance
  • Longest large diameter pipe jack in New Zealand
  • World class slurry separation systems

And we’ve won Contractors Federation Awards for successfully completing projects in congested CBD sites.

We are part of Hawkins Group, New Zealand’s largest privately owned construction company.

We’re committed to providing high-level technical advice, operational excellence and cost-effective solutions.

We’re problem solvers. Our experience allows us develop practical and sustainable solutions for technically difficult underground projects.

We believe doing business should be easy and our approach is based on respect, fairness, openness and no surprises.

And we’re agile, flexible and responsive which helps us to deliver the best outcomes for our clients.


Stormwater ponds and pipelines at Hobsonville for Hawkins Infrastructure
July 2015
Since April the Harker team has been constructing stormwater ponds and pipelines at Hobsonville for Hawkins Infrastructure. Part of this project included a 40m long pipejack section to complete the outfall structures. The pipejack is only 1050mm in diameter and is constructed using hand excavation from a sheetpiled shaft. Whilst the autumn and winter weather has been a challenge for the earthworks, pipejacking has gone well. Work started on the 17th June and took just 10 days to complete. The... Read more


Shaft construction


  • "Hi Matt and Paul and the team
    We appreciated being able to visit your work place. It is visits like this that open students’ eyes to what is available out there when they leave school. I appreciate the time you took to put up the safety barriers for us so we could actually get pretty close to the action."
    Sonia Joyce, HOD Careers
    Orewa College
  • "We worked with Harker on the Hobsonville Stormwater Ponds and Outfall Project. What stood out for me was the way they partnered with us. They didn’t pay it lip service, it was a proactive effort from them all the way through the project."
    Daniel Williams, Regional Manager
    Hawkins Infrastructure

Contact us

Send an email or give us a call if you would like to make a comment, require more information or need some advice.

1 Croskery Road, Papakura, Auckland 2110
PO Box 101 Drury, Auckland 2247, New Zealand

T   +64 9 295 2570
F   +64 9 299 1577