What We Do
Six core services.
One specialist team.
From initial ground investigation through to construction-phase support — PGI Geotechnical Group covers every stage of geotechnical delivery across North Queensland.
Geotechnical Investigation
Staged subsurface investigation programs — borehole drilling, test pit excavation, SPT testing and geotechnical reporting for foundation and infrastructure design.
Learn more →Soil & Field Testing
Comprehensive in-situ and laboratory testing — Atterberg limits, CBR, DCP, permeability and consolidation — to characterise site materials with precision.
Learn more →Slope Stability & Landslide Hazard
Limit equilibrium stability analysis, landslide hazard and risk assessment, and remediation design for North Queensland's challenging terrain.
Learn more →Site Classification (AS 2870)
AS 2870-compliant residential site classification reports accepted by all Queensland building certifiers, with rapid turnaround for high-volume programs.
Learn more →Engineering Geology
Rock mass classification, discontinuity logging, kinematic analysis and three-dimensional subsurface geological modelling for complex site conditions.
Learn more →Ground Investigation & Earthworks
DCP surveys, compaction monitoring, fill material assessment and earthworks specification development — from design through to construction phase.
Learn more →How We Work
A proven approach to
every investigation.
Every investigation is different. But our process — rigorous, transparent and tailored to your project risk profile — is consistent across every engagement.
Desk Study
We review existing geological mapping, historical borehole records and available site data before a field team sets foot on site — eliminating avoidable surprises.
Program Design
A targeted investigation scope is developed — matched precisely to your project scale, risk profile and budget — before any drilling commences.
Field Investigation
Borehole drilling, test pit excavation, in-situ testing and soil sampling — all supervised directly by our engineers, not subcontracted technicians.
Analysis & Report
Laboratory results are interpreted and distilled into clear, actionable geotechnical recommendations your design team can use immediately and with confidence.
About PGI
North Queensland's
ground experts.
Founded in 2013 and headquartered in Townsville, PGI Geotechnical Group has grown into the region's most capable independent geotechnical engineering practice. We mobilise across more than 500,000 km² of diverse geological terrain — from tropical coastal plains to the remote outback.
Over a decade of continuous operation across North Queensland's extraordinarily varied geology has given our team an unparalleled body of local knowledge — from the reactive estuarine clays of the Burdekin Delta to the Precambrian basement of the Mount Isa Inlier.
Standards & Compliance
- AS 2870 — Residential Slabs & Footings
- AS 1726 — Geotechnical Site Investigations
- AS 4678 — Earth-retaining Structures
- NATA-accredited Laboratory Testing
- Australian Geomechanics Society Member
- Engineers Australia Member
Why Choose PGI
What sets us apart
from the rest.
We are not a large firm routing your project through junior staff. Every investigation is handled by experienced engineers with direct knowledge of North Queensland's geology.
Local Geological Expertise
We are not fly-in fly-out consultants. Our team has spent over a decade working across North Queensland's geological conditions — from reactive Burdekin clays to the Mount Isa Inlier. That local knowledge is irreplaceable.
Direct Engineer Access
Your project engineer is reachable throughout the engagement — not routed through a call centre. Questions get answered by the person who designed the investigation and wrote the report.
Accredited Laboratory Testing
All laboratory testing conducted through NATA-accredited facilities to AS/ISO standards. Our results withstand regulatory scrutiny and independent audit — critical for planning and construction approvals.
Reliable Reporting Timeframes
We commit to delivery schedules that suit your project program and we honour them. Investigation reports are delivered on time to keep your design approvals and construction schedule on track.
Where We Work
10 service regions.
One trusted partner.
From Townsville to the Gulf Country, PGI Geotechnical Group has the local geological knowledge and field capability to deliver wherever your project is located.
Townsville
Headquarters
Ayr & Burdekin
Burdekin Region
Bowen
Whitsunday Region
Ingham
Hinchinbrook Region
Cardwell
Cassowary Coast
Charters Towers
Northern Highlands
Hughenden
Flinders Region
Mount Isa
North West QLD
Burketown
Gulf Country
Moranbah
Isaac Region
Get Started
Ready to investigate
your site?
Contact PGI Geotechnical Group for a tailored investigation proposal. We respond to all enquiries within one business day.