Southern Geotechnical.
Experience you build on.

Fast, AS2870-2011 compliant Site Classification Reports and Geotechnical Investigations for residential, commercial and speciality projects, prepared by fully qualified engineering geologists and geotechnical engineers.

Get a Free QuoteCall (03) 9551 0308
geotechnical services

Fully Qualified

Fully qualified engineering geologists and geotechnical engineers on every job

geotechnical soil testing

Right Equipment

A full range of testing equipment & drilling rigs suited to any site condition

geotechnical soil testing reports

Fully Insured

Professional Indemnity and Public Liability insurance for your peace of mind

Industry Recognised

Members of FFSV, the Australian Geomechanics Society and AIG

Local Experts

Decades of experience across Melbourne and the Mornington Peninsula

geotech engineering melbourne

Qualified Engineering Geologists and Geotechnical Engineers

With a legacy dating back to 1989, Southern Geotech specialises in providing comprehensive Geotechnical Services throughout Victoria, with a focus on Metro Melbourne, the Mornington Peninsula, Bass Coast and Gippsland.

Our team comprises of seasoned and qualified Engineering Geologists and Geotechnical Engineers who possess a wealth of experience and knowledge.

From site classification soil testing to detailed geotechnical investigations, our suite of services is designed to empower clients with the insights needed to make informed decisions.

At Southern Geotech, we have a commitment to quality, being meticulous, and taking a thorough approach to soil testing & reporting.

Read About Us

Our Geotechnical Services

Residential Soil Testing

Site Classification Report to AS2870-2011 for new homes, extensions, multi-unit and dual occupancy developments.

Learn More

Non-Residential Investigations

Geotechnical investigation for factories, commercial buildings, retaining walls, sports lighting and netting, schools, hospitals and aged care.

Learn More

Basement & Car Stacker Development

Assessing soil stability, bearing capacity and potential hazards for below-ground development

Learn More

Inground Pool Investigations

Geotechnical assessment of filled ground, rock, groundwater and vegetation and any challenges that may arise during the building process.

Learn More

Stormwater Solutions (SHC Test)

Saturated Hydraulic Conductivity testing to help deign onsite stormwater systems where offsite disposal isn’t permitted

Learn More

Land Capability Assessments

A Land Capability Assessment (LCA) is conducted to determine the suitable type and size of your septic/wastewater disposal system, necessary for safe and legally compliant disposal.

Learn More

Common developments that require soil testing include:

  • New House
  • Extensions to Existing Dwelling
  • Upper Storey Extensions
  • Units/Dual Occupancy
  • Townhouse/Unit Developments
  • Subdivisions
  • Pools
  • Sheds or Garages
  • Decks
Contact Us

Soil Testing Frequently Asked Questions

A standard Site Classification Report in Melbourne includes the following parameters:

  • Soil type (e.g., Clay, Sand, Silt, or a mixtures)
  • Soil reactivity – how much the soil will expand or contract with changes in moisture
  • Bearing capacity – how much load the soil can safely support
  • Site features – such as trees, existing structures, fill, and slope

Site Classification ensures your builder and engineer understand exactly how reactive the soil is, so they can design a footing or slab system that accommodates this movement and protects the integrity of your structure.

Soil testing provides essential data on the ground’s reactivity, bearing capacity and stability. Our comprehensive reports include all the critical details your engineer needs to make informed decisions when designing your project’s footings and foundations.

Unfortunately, soil classification isn’t something you can choose. It’s determined solely by what is found beneath the surface. Our role is to accurately report those findings so your builder or engineer can design the most suitable footing and slab system for your project.

There are many different classifications your site can come back as. The most common classification seen is a Class P, or “Problem Site”. Class P sites are governed by having trees or vegetation, existing buildings, old building remains, or fill (i.e. made ground) on site or neighbouring sites; which is the case for most sites around Victoria!

Other classifications include:

  • Class S: Slightly Reactive – Sand/Light Clays/Silts
  • Class M: Moderately Reactive – Medium Clay
  • Class H1: Highly Reactive – Heavy Clays
  • Class H2: Very Highly Reactive – Expansive Clays 
  • Class E: Extremely Reactive – Highly Expansive Clays

For residential projects with restricted access, we use hand augers. These are perfect for getting into tighter spaces, testing exactly where the works are planned, and keeping disturbance to a minimum. We also have a fleet of 4×4 mounted drill rigs and tracked rigs ready to go. These allow us to drill deeper, even in tight spaces, and collect more detailed data, which is especially important for larger builds or complex ground conditions

Simply send us the site address, a brief outline of your project, along with any available plans, and we’ll provide an obligation-free quote tailored to your site and requirements.