Specialist contractors for civil construction projects

Established in 2007 as Sonic Piling and Foundations Pty Ltd and currently trading as Sonic Geo. We are a wholly Australian, family-owned business. Company director Greg MacDonald, Company Chief Operating Officer Lyle Griffiths and their team have over 40 years of experience within the industry.

What We Do

Crane Bases

Crane Bases

Sonic Geo is experienced in supplying, drilling and installing anchors to tower crane bases and concrete tower booms.
Sonic Geo - Ground Anchors

Ground Anchors

We have the resources to drill, fabricate and install temporary and permanent ground anchors from 10kN up to 13,000kN capacity.
Grouting Solutions

Grouting Solutions

Ground improvement is accomplished by the addition of non-soil materials into the ground (either in rock or soil) to enhance and improve the properties and characteristics of the ground.


Micropiles (or mini piles) are load bearing piles, typically ranging from 75 to 300mm in diameter, and can be installed where access for conventional plant is restricted
Sonic Geo - Rope Access

Rope Access

We apply our engineering knowledge and site experience to deliver practical solutions in areas of difficult access and where conventional construction equipment cannot be used.
Sonic Geo - Rock Bolts

Rock Bolts

From securing a potential rockfall on a residential property, to tunnelling large scale road and rail projects, Sonic Geo can meet the needs of any rockbolting job.


Shoring solutions are most commonly installed to prevent ground collapse and ensure worker safety on a site.


Sonic Geo can provide a complete rockface or embankment stabilisation package, including installation of rockbolts, reinforcing mesh, subsoil drains and shotcreting (sprayed concrete).
Sonic Geo - Rockface Stabilisation

Slope and Rockface Stabilisation

Sonic Geo has provided various slope and rockface stabilisation solutions to the residential, commercial and mining industries
Soil Nails

Soil Nails

Similar to rockbolts, except that the tendon is typically installed in cohesive soil (clay or weathered rock) faces or embankments.
Sonic Geo - Structural modification

Underpinning, Propping & Structural Modifications

Sonic Geo has the experience and expertise to take on any underpinning or structural modification project.
Other Solutions

Other Solutions

Flat Jacking, Beam Pre-deflection, Structural Beam Levelling and Testing of Ground Anchors

Who we work with

BNS Landscapes
Mainland Civil
Fulton Hogan
Richard Crookes
Marr Contracting
Transport for NSW
Seymour Whyte
Willoughby City Council