FAMILY OWNED • INDEPENDENT • SYDNEY BASED

Geotechnical Services & Site Investigations Across Sydney

Based in Marrickville and mobilising 4WD across the Sydney Metro, we bring infrastructure-grade geotechnical expertise to residential and commercial projects. Delivered with the personal attention that only an independent, locally-owned practice can offer.

Every service is scoped and delivered by our Principal. No subcontracted fieldwork, no templated reports. Site-specific data, signed by the Engineer who was on your ground.

Residential site classification and soil testing in Sydney by SFGEO.

Residential Site Classification | Sydney

Site Classification & Soil Reports for Homeowners, Builders & Designers

Most people know it as a "soil report" or "geotechnical report"—in engineering terms, it's a Site Classification. Whether you are planning a simple house extension, a granny flat, a duplex, or a high-end architecturally designed home, we know Sydney ground conditions. We provide the site-specific AS2870 classifications and soil parameters to support your structural engineer’s footing design, helping your DA or CDC documentation pathway move forward with less guesswork.

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Comprehensive geotechnical subsurface investigations for commercial and residential projects.

Geotechnical Investigations | Commercial & Residential

Comprehensive Geotechnical & Pavement Investigations

Built from real, ground-up experience spanning the trades, drilling, and senior engineering, we understand what is happening below your site surface. From our Sydney team, we carry out comprehensive geotechnical investigations for residential, commercial, and land development projects. We define subsurface conditions through boreholes and test pits, providing reliable parameters to support foundation design, excavation planning, and site remediation.

Rapid response construction phase support and footing inspections in Greater Sydney.

Construction Phase Inspections | Rapid Response

Construction Phase Support, Site Inspections & Testing

We know that open trenches and idle machinery cost our local builders money. We provide highly responsive, practical site support across Greater Sydney. By delivering timely geotechnical site assessment findings and verification during the build, we help reduce avoidable delays and keep works progressing safely on site.

Reliable geotechnical design parameters and inputs for complex structural engineering.

Geotechnical Design | Design Parameters

Geotechnical Design & Parameters

We partner with top structural and civil engineers, supplying the critical foundational data they rely on. We do not provide the structural design ourselves; instead, we deliver the site-specific geotechnical inputs and parameters your design team may use to engineer safe, efficient, and commercially sensible solutions for complex builds.

SFGEO's trusted partner network of Sydney structural engineers, civil engineers, and environmental consultants.

Get in contact with our trusted partner network

Our Trusted Partner Network

As a proudly Sydney-bred independent practice, we believe in supporting the local ecosystem. Over the years, we have built a trusted network of highly reputable professionals who understand how to utilize precise, practical geotechnical data. If your project needs a collaborative team, we are happy to make a site-specific introduction.

Geotechnical & Drilling Services Across Greater Sydney

Headquartered in Marrickville with rapid mobilisation across Parramatta and the wider metropolitan region, we provide responsive geotechnical support across:

Inner West & City

Marrickville, Newtown, Surry Hills, Petersham, Leichhardt, and surrounds.

Parramatta & Western Sydney

Parramatta, Merrylands, Auburn, Homebush, Blacktown, and surrounds.

North Shore, Ryde & Hills

Chatswood, St Leonards, Mosman, Ryde, Kellyville, Rouse Hill, and surrounds.

Eastern Suburbs & Southern Sydney

Randwick, Bondi, Vaucluse, Hurstville, Cronulla, and the Sutherland Shire.

Family Owned • Sydney Born & Bred
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