Specialists in locating &

mapping underground utilities


We are specialists in the location, surveying and mapping of underground utilities, providing you with an accurate and detailed plan of all detectable underground services within your specific site and we can carry out all major underground surveys, some of which are:


Ground-penetrating radar (GPR) an electromagnetic method to locate targets including; metallic and non metallic utilities, concrete footings, fuel tanks, concrete rebar, buried manholes and graves.


Electromagnetic Induction (EMI) pipe and cable location is a method to identify underground metallic utilities, or those with a tracer wire, including power, gas, telecommunications and water pipelines.


A GPS survey provides a 2D plan of the site based on aerial imagery from council GIS data,with GPR/EMI surveyed service lines plotted using GPS positioning. Deliverables will be in PDF/CAD/GIS format.


Our team demonstrate a high level of understanding and practical expertise to meet industry requirements to gain the national industry qualification as a Before You Dig Certified Locator.


We use duct rodding to locate stormwater pipelines, water pipelines (with access) by insertion of fibreglass rodding with a copper wire to enable us to apply EMI pipe and cable locating.


In order to provide a complete solution SSD can coordinate the use of hydro excavation for pot holing and confirming services; CCTV drain camera inspections and traffic management.


Our sister company Leak Detection Ltd focus on the location of underground water leaks for residential and commercial customers using acoustic devices with pipe and cable location.

Phone: 0800 500 330 – Email: admin@subsurfacedetection.co.nz


Hi Justin, just wanted to say a big THANK YOU to you and your team for all the great work you have done on our Project . Being the biggest Civil project in the country we have no room for error, and working in the Auckland CBD certainly has thrown us a few curve balls when it has come to Utilities. Thanks to the in depth knowledge and detection skills of your team, we have found Sub Surface Detection to be a valuable resource and our “go to “ contractor for any mark-out and detection of known, or unknown services in the area . Whether it is a mark out of a cable, or to detect depth and direction of a duct, you have always given us very prompt, efficient and an accurate mark out . I can’t recommend you highly enough. Once again, many thanks.

Peter – Link Alliance – Sept 2023

I just wanted to pass on my congratulations and positive feedback to your teams survey fieldwork completion on a very difficult airfield operational area.

Jonathan – May 2017

I highly recommend Justin and his team at Sub Surface Detection for their exceptional work in underground utilities locating. Their collaborative approach, reliability, and expert skills have consistently proven invaluable in ensuring the safety and success of our construction projects.

Joel – Naylor Love – Sept 2023

I just wanted to say thanks to the guy’s (Mark and Skip) you assigned to Electrix over the past week. Both were professional and committed to the workload. Many Thanks

Grant – August 2017

Stockman General Contractors have been using SSD for many years now all over Auckland. The thorough and detailed approach the team at SSD has is unmatched. This is coupled with a can do attitude and willingness to go above and beyond

Aaron – August 23

We just want to take the opportunity to praise the staff member who attended our property. He was professional, courteous, well informed and presented us with exactly the information we were asking for. Of course you would expect that but, the manner in which he performed his duties was exemplary. You are fortunate to have such an employee.

Robin – Feb 2019

Many thanks for doing a top job at no 8 Clifton Road, Takapuna. The contractors were most impressed with Tom’s work and have taken your details so they can phone you when they need similar work in the future.

Ngaire – March 2018

This is to thank you and your team for the great work you did on the above project. You achieved everything asked, on time, and on budget. The results exceeded our expectations and were essential to achieving our objective. We’ve had great feedback about the work and there seems to be a general acceptance by management that using a contractor is the way to go.
Auckland Council – Dec 2018