Welcome to Geoscope.

Our mission to help you know what’s below!


My name is Simon Williams,
and I’m the director of this 100% Australian owned and operated, Sydney business.

At Geoscope, I feel we are known best for our quality relationships built on and off the work site.

I started out my working life diving in the deep end learning the trade of an Automotive Engine Machining where, as it turned out, put me in good stead to take on the subsurface detection industry in more ways than I knew.

The trade consisted of undertaking precision machining and piecing together mechanical assemblies. The work was great! It fulfilled my passion for cars and my inquisitiveness to find out how things worked.

We’ve been around and seen nearly every situation there is when it comes to locating services in Sydney, and if we can help another site complete their works around buried pipes or cables faster, safer and efficient, then it makes all the difference to us.

Why we got started

Geoscope Utility Detection Services began in 2013 when I felt the need to give clients more than just paint on the ground. We feel our clients deserve the information to tackle their projects and to keep them safe at site and to allow you to work at a level of greater productivity due to being greater informed.

We specialise in underground service locating, utility mapping and concrete GPR slab scanning providing clients with high level of detail to suit their working requirements. We can record our findings with utility surveys and CAD drawings and confirm these findings by potholing using non-destructive digging processes.

You or your client might be looking to build the next light rail network, tunnel under the Sydney Harbour or identify cables prior to excavating test pits for Geotech and environmental soil testing. We have you covered for all your underground or in slab detection needs.

How can we help you?

I believe a successful project, no matter how big or small needs to start off on the right foot.
That’s where using Geoscope to locate and map your underground services or scan the post tensioned slab you are looking to core drill for penetrations, you’ll be better informed of what you’re working with before any issues arise.
If this is something that you can relate to what you want in a service locating contractor, I urge you to get in touch to see how we can help.

How we mark

We primarily mark with a high-quality spot marking aerosol made by signet. This paint has consistent colour and spray patterns leaving us with quality looking markings. In some case where decorative paving or tiles are in place, we can prevent this semi-permanent marking being overused or use a chalk-based paint which is easily removed.

Our markings are unique in that we identify each service type to a coloured paint so that when our customers see our work, for one: (1) They know we have completed the locating, (2) What asset is below due to the colour coding of the service and the labeling, (3) What quality level class location was achieved, (4) and how to proceed from the utility location stage.

Here’s a look into the colour coding marking system Geoscope uses to complete our Utility Surveys.


Red – HV Electricity

High Voltage transmission Cables, High Voltage Distribution Cables, Transgrid, Ausgrid, Endeavour, SACL, and voltages above 1000 volts


Orange – LV Electricity

Ausgrid and Endeavour distribution electricity cables, RMS-Roads and maritime electricity traffic signals cables, street lighting, low voltage cables and voltages below 1000 volts


White- Communications

Telecommunications cables, Telstra copper and fibre network, Nextgen, Verizon, Soul fibre, Pipe Networks, Optic fibre and data cables


Blue – Water

Water mains, Reticulation and trunk water mains, water services, uPVC and PE water pipes, fire sprinkler pipes, HDPE water mains and any water service
*Fire Hydrant and fire mains markings are blue lines with red lettering


Yellow – Gas

Jemena gas mains, polyethylene and nylon gas pipes, trunk and transmission gas pipelines, jet fuel gas lines, Ethane and Ethylene pipelines, Fuel lines


Green – Storm Water / Drainage

Council storm water pipes and drainage lines, down pipe connections, kerb outlet drain, storm water grates


Purple – Sewer

Sydney Water sewer mains, private sewer mains, waste water pipes, grease arrestor systems


Pink – Unknown service

Unknown signal or image from electromagnetic locating and or ground penetrating radar scan which was not on the DBYD or existing service plans and or unable to verify trace to a known source.

What about the standards?

By working to the Australian Standard – Classification of Subsurface Utility Information, we have the bar set to the highest level when we complete our locates.

We only recommend the highest standard possible to fulfil everyone’s duty of care and completing the work safely. If you’re not committed to working to a high-quality level, we may not be the right fit for our working relationship at this point in which we may have to recommend you find someone to complete the works at your standard.

We’re big believers in safety, the first time!

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