Luke Whittaker, Director

  • Luke has spent a total of 20 years in Construction with 14 of those years directly attributed to the Geotechnical Industry
  • Assessed over 10,000 site classifications/investigations
  • Supervising and consulting more than 300 civil construction sites
  • Ranging from local residential to high level construction


Soil testing by Coastal Geo

Geotechnical investigations first, Construction second

The investigation belongs at the front of the programme, not squeezed in beside it. A classification issued early gives the builder time to design the footings, price the slab and sequence the excavation before the dates lock in, and gives the client the chance to act on what's in the ground before it costs them later. Fourteen years in geotechnics, backed by a working history in construction, means the recommendations are written to be used on site, not just filed with the approval.

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Qualifications and Registrations

Diploma of Laboratory Sciences

Laboratory Technician Including Site Classifier. Registration No: 202236361

Diploma of Project Management

Completed 2026

QBCC licence

Obtained 2026, licence 1534 8305

Member of the Australian Drilling Industry Association

Member of Soil Science Australia.

The work behind the number

10,000+ site classifications/investigations. Single residential lots through to major subdivision development across new subdivisions, in Queensland and New South Wales.

300+ civil construction sites. Seven years supervising and consulting, covering civil infrastructure, residential and commercial subdivisions, and environmental projects.

Mountains to coastline. Soils of every nature, from range profiles to coastal sands and everything in between, scoped and tested to suit the build.

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How we work

You ring and you get the person who logged the boreholes on your site.

You call with a site. We work out what the job actually needs: a site classification for a new build, a wastewater investigation for an on-site system, or a geotechnical investigation for a new development.

We scope to the construction. What's being built determines the investigation. Holes, depths and testing are set against the information you provide, not a fixed package.

We attend site. Drilling or inspection works carried out, data and samples gathered on the ground.

Laboratory testing where required. Testing to AS 1289 standards when the job calls for it.

We interpret and report. Data interpreted and the report produced, with recommendations your designer can build straight from.

We write reports so a designer can lift the footing recommendation straight out of them.

If something turns up during excavation that does not match the report, ring and ask.

Talk to Luke

Send a site address and any plans you have. You will get a fixed quote and a date we can be on site.

Get a Fixed Quote
or Call 0408 861 788
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Coastal Geo Consulting Licensee: Luke James Whittaker Licensed under the QBCC Act · QBCC Licence No: 1534 8305


6am–5pm, seven days 


South East Queensland & Northern NSW

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