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Overview of Coffey

David Coffey saw the opportunities that geotechnical engineering had during the 1950s when it was a little-understood practice rarely used in Australia. He traveled to Canada to improve his skills and began his own business in 1959. Coffey only took four years to lead the market, putting out competitors who had arrived overseas. In the mid-1960s, we served and started to expand across Australia. Coffey International Limited was registered on the Australian Stock Exchange in 1990. Today we've been involved in more businesses than ever before all around the world. From the very beginning, we've been breaking new ground. Having entered Tetra Tech in 2016, we are now part of a significantly larger global network of professionals than ever before.


For more than 60 years, Coffey, a Tetra Tech company, has been a reputable partner of professional consultancy and engineering services. From small beginnings, we have driven the industry in our key markets to provide the technical knowledge and innovative strategies that our clients need.


Tetra Tech is a major supplier of high-quality consultancy and engineering services for ventures worldwide. With 20,000 associates operating together, Tetra Tech offers simple approaches to diverse challenges of climate, atmosphere, transportation, resource management, energy, and international growth. We are leading with science to produce sustainable and resilient solutions for our customers.

Services offered by Coffey

Our specialists are experts in engineering, geotechnical, environmental, testing, and project management services. Our expertise covers several industries, including international development, mining, oil and gas, property infrastructure, transport infrastructure, and defense.


We offer the following services:

  • Geotechnical engineering
  • Deep foundations
  • Earthquake engineering
  • Expert witness
  • Geophysics
  • Ground improvement services
  • Ground interpretation
  • Groundwater
  • Numerical modeling
  • Pavement
  • Retention systems
  • Slope engineering
  • Temporary works
  • Underground spaces
  • Water retention dams
  • Environmental management
  • Geospatial services
  • Environmental and social services
  • Health and safety
  • Site assessment and remediation
  • Project management
  • Defense
  • Education
  • Health
  • Justice
  • Commercial
  • Residential
  • Sport and leisure
  • Development assistance
  • Testing services
  • Aggregate testing
  • Soil testing
  • Advanced geotechnical testing
  • lnstrumentation, monitoring, and geotechnical investigation
  • Site inspections and monitoring
  • Safety practices
  • Occupational hygiene
  • Legionella
  • Asbestos & hazardous materials
  • Engineering
  • Building Information Modelling
  • Structural engineering

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Rated 4.8 by 116 Customer Reviews