Ground penetrating radar scanning – accurate subsurface detection

Ground penetrating radar (GPR) scanning provides a non‑invasive way to see what lies beneath the surface. For property owners, builders and heritage managers in Parramatta, it can prevent costly surprises before excavation begins.
What is ground penetrating radar scanning?
GPR uses high‑frequency radio waves to detect buried objects, utilities, voids and changes in soil composition. The equipment sends a signal into the ground and records the reflections, creating a visual map of subsurface features.
Benefits of GPR for property owners in Parramatta
• Safety first – Identifies hidden utilities, reducing the risk of strikes during digging. • Cost control – Spot potential problems early, avoiding expensive re‑work. • Heritage protection – Locates structures or artefacts that need careful handling. • Speed – Provides results within hours, helping you keep timelines on track.
Common applications in the Sydney region
GPR is used for a range of projects, including:
- Surveying residential sites before renovations.
- Mapping underground utilities for new build developments.
- Assessing structural integrity of concrete slabs and floors.
- Investigating suspected soil voids or sinkholes.
How SURVTECH conducts a GPR scan
Our technicians start with a site assessment to determine the most suitable antenna frequency. The scan is then performed in a systematic grid pattern, ensuring complete coverage. Data is processed into clear, easy‑to‑read images that highlight any anomalies.
Choosing the right GPR service for your project
Consider the depth you need to investigate and the type of material you expect to encountered. For shallow utilities, a high‑frequency antenna provides detailed resolution. For deeper investigations, a lower frequency offers greater penetration.
Get started with a GPR scan in Parramatta
Understanding what lies beneath your site can save time, money and stress. Contact us to discuss your project and receive a customised quote. If you’d like to learn more about the practical benefits of GPR, explore our ground penetrating radar services today.

