Trusted by 200+ Clients Including Leading Infrastructure Organisations
Over 20 years in business. Impressive, purpose-built fleet.
Over a 200 pairs of capable hands. Reliability, compliance, safety and risk management are a given. But we’re more than a blunt instrument. We’re the sharp edge.
Underground Asset Management
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Civil Infrastructure
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Remediation
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Environmental Resource Management
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Industrial Specialised Services
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Specialised Drilling Services
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Surveying
Learn moreOur Comprehensive Capabilities
Four Disciplines. One Delivery Team.
From ground investigation to environmental remediation, every capability is delivered by our trusted team.
Infrastructure
Complete civil and underground infrastructure delivery for complex, multi-discipline projects.
- Civil Construction & Engineering
- Drilling & Groundwater Systems
- Demolition & Decommissioning
Environmental
From preliminary site assessment through to full remediation, we manage environmental risk at every stage of your project.
- Environmental Resource Management
- Contamination Assessment & Remediation
- Regulatory & Compliance Support
Geotechnical
Precise subsurface investigation and analysis, giving your project team the ground data it needs to move forward with confidence.
- Site Investigation & Testing
- Geotechnical Reporting
- Subsurface Risk Assessment
Industrial
Specialist industrial support that keeps sites safe, compliant, and operational across the full project lifecycle.
- Industrial Cleaning & Maintenance
- Vacuum Excavation & NDD
- Asset Inspection & Management
Serving Diverse Markets
Tailored Solutions for Your Industry
Government, Transport & Defence
Specialists in complex public and regulated environments including rail, major roads, ports, marine and secure facilities. We deliver civil and subsurface works in live corridors, constrained sites and high-compliance settings where safety, access and programme certainty are critical.
- Rail corridor works
- Utility relocations
- Trenchless installations
- Marine-adjacent infrastructure
- Secure site delivery
- Complex staging under traffic or possession
Energy, Utilities & Environmental
End-to-end delivery supporting essential service networks, high-voltage assets, pipelines and water infrastructure. We manage risk in congested corridors and environmentally sensitive locations while maintaining service continuity.
- HV/LV infrastructure
- Substation civil works
- Fuel and oil pipelines
- Utility protection and diversions
- Water and wastewater assets
- Trenchless critical crossings
Commercial, Industrial & Critical Facilities
Precision infrastructure delivery within live commercial, industrial and mission-critical environments. We integrate early to de-risk ground conditions, coordinate services and maintain operational continuity.
- Basement and podium services
- Brownfield upgrades
- High-density underground services
- Redundant pathways
- Shutdown works
- Restricted-access environments
Industry-Leading Credentials
Built on 20+ Years of Excellence
The numbers that prove our commitment to safety, quality, and reliability
What Sets Us Apart
"You can do that?"
That's something we hear all the time. Here's why clients choose QEST
"Not just resourced but resourceful. With QEST, no matter what problem you throw at us, someone within the business has solved it before. Because we're always building upon that sturdy foundation of experience, knowledge and skill, you can be sure your project is starting on solid ground."
"We don't rely on 3rd parties for core activities, so you'll be dealing with the same high-performance team for your entire project. That means we're not just accountable to you, we're also accountable to each other. And no part of the QEST team would ever let the others down."
"I wanted to share some positive feedback received from recent site safety inspections and internal reviews. This project has drawn a fair amount of attention due to its location and criticality within WTP, and it's been encouraging to see the high standards being maintained by QEST both on the ground and behind the scenes. The site setup, particularly the clear delineations and pedestrian crossings, was well received and showed a proactive approach in managing site access and safety risks. Personnel on site came across as confident and knowledgeable about their tasks. Beyond site practices, the quality of your documentation and timely submissions has been consistently mentioned as a standout. Please pass on this appreciation to your team."
How We Work
Streamlined Project Delivery
From strategic pre-planning to project handover—we handle the complete process
Planning
Site Assessment and Review. Project Evaluation and comprehensive site analysis to understand your unique requirements and challenges. Drawing from existing utility records, site plans and historical data to identify known assets and potential risk areas to create a project plan with timeline, resource allocation and risk mitigation strategies.
Investigation
Advanced GPR & EM Scanning. Deploy Ground-penetrating Radar and electro-magnetic induction technology to locate all subsurface utilities with industry leading precision.
Verification
Non-Destructive Verification. Hydro Non-Destructive Excavation to physically expose and confirm exact utility locations, achieving AS5488 Quality Level A (50mm accuracy).
Mapping
3D CAD Documentation. Comprehensive 3D models, CAD drawings and detailed reports showing all underground infrastructure in relation to your project.
Delivery
Integrated Execution. Single team delivery across all service requirements with real-time communication and updates. On-site supervision and ongoing support to ensure complete safety and compliance throughout delivery of your project.
Industrial Tank Cleaning – Safe, Efficient, and Effective
Automated Tube Cleaning – Safe, Efficient and Effective
Industrial Service Shutdowns – Recent Project Success
Introducing the Aqua Cutter 750V – our New Mean Machine in Hydro-demolition.
Groundwater Pump Test for Wetland Development Feasibility
“Fat Berg” cleared by QEST.
Ready to Start Your Infrastructure Project?
Talk to our experienced team about your project requirements. Get in touch today to discuss how we can help.
Local expertise, national strength
Whether your project’s in VIC, QLD or SA, you’ll get the same trusted QEST team — experienced, equipped and ready to deliver. Our network keeps us close to your site and connected across every phase of the job.
Head Office
29 Saunders Street
North Geelong VIC 3215
Victorian Operations - Deer Park
20 Radnor Drive
Deer Park VIC 3023
Victorian Operations - Keysborough
79 Indian Drive
Keysborough Vic 3173
South Australian Operations
10 Alfred Avenue
Beverley SA 5009
Queensland Operations
5/65 Tonka Street
Luscombe QLD 4207