About us

Clarke Underground has been contracting for over 25 years in the field of Underground Utility Installations. Our central location in the Manawatu/Wanganui region means we’re well positioned to serve the entire North Island.


We offer all types of underground construction services, from Mole Ploughing and Directional Drilling to Rock Sawing, Thrusting, Trenching, River Crossings and Duct & Cable Laying. Our Installation expertise covers Telecommunications, Power, Gas, Water/Sewerage and Drainage.

Our Commitment to Quality

We believe that our success as a company stems from our unwavering commitment to quality in every aspect of our operations. We maximise quality by working systematically to well-defined procedures, to produce excellent results for our customers.

Our People

Our dedicated team has 150 years of combined experience in the civil construction industry, including some of the largest civil lay projects in New Zealand history.


Gary Clarke

Managing Director

027 443 9112



Gary Clarke had 10 years experience in Telecom as a foreman in underground works before establishing Clarke Underground (known then as Gary Clarke Contracting Limited) in 1989. In the last 25 years, Gary has installed underground services for many major clients across New Zealand.

Gregor McLachlan

Contracts Manager

027 449 9416



Greg has 30-years experience in the Telecommunications industry working for Telecom, Connectel, and Downer. In the last 10 years he has managed many of the Telecom New Zealands’s/Chorus’ projects in the Manawatu/Horowhenua region as Build Manager for Downer Engineering.

Tina Clarke


06 353 5182



Tina can do very good savoury scones.


Community Support

Clarke Underground are also proud sponsors of the Manawatu Turbos.


Old Boys Cricket Club

Check out Old Boys Cricket Club Premier One side in their new warm up tops before their opening game of the 2014/15 season. They look awesome.


Old Boys Cricket Club wishes to acknowledge the fantastic support from Clarke Underground who funded the purchase of the warm up tops and who provide on-going and valuable sponsorship support for the teams at Old Boys Cricket Club.


The support from Clarke Underground contributes to keeping young men involved in sport.



  • Telecommunications
  • Power
  • Gas
  • Water/Sewerage
  • Drainage


Underground Services

  • Directional Drilling
  • Mole Ploughing
  • Thrusting
  • Trenching
  • River Crossings
  • Duct and cable laying
  • GPR Utility Locations
  • Cable hauling
  • Cable jointing
  • PE fusion welding
  • Manhole installations
  • Bridge trunking
  • Rock Sawing