Geotechnical · Principal-Led · Sydney
Geotechnical. The Full Suite.
From the first hole on an empty block to the last inspection before the pour, one team carries the whole geotechnical scope, and the Principal is across every job.
Site classifications from $800 + GST · Fixed fee in writing within one business day · The engineer who drills your site signs the report
01
Site Classification.
The AS 2870 report your structural engineer designs from: homes, extensions, granny flats, duplexes and pools, scoped to your block rather than a template. Fixed fees from $800 + GST, reports as soon as 2 business days from fieldwork.
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02
Geotechnical Investigations.
Boreholes, penetrometers and NATA-backed laboratory data for DAs, complying development, footings, basements and retaining structures. The engineer who drills your ground is the engineer who signs your report.
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03
Geotechnical Assessments.
The specific questions that need an engineering answer: slope stability and retaining assessments, settlement and cracking investigations, compliance records for council orders, and second opinions on someone else’s report. Scoped to the question, answered in writing.
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04
Construction Phase Support.
Footing, pier and pile inspections at bearing level, proof rolls, and engineered fill to AS 3798, verified on site and confirmed in writing before the pour, so an open excavation never waits. Single visits for builders; standing engagements for commercial contractors.
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05
Geotechnical Design.
Site-specific inputs for structural and civil teams: bearing capacities, pile design values, retaining wall parameters to AS 4678, pavement and working platform assessments. We don’t carry the structural design; we make sure the numbers under it are real.
Explore Geotechnical Design→Who We Work With
Same Ground. Different Questions.
Homeowners
A classification or investigation for the home, pool or granny flat, explained in plain English and priced fixed.
Architects & Builders
Reports written to your certifier’s requirements, and inspections that keep the program moving.
Engineers & Developers
Parameters your designs can rely on, investigations at any access, peer-review depth on request.
Councils & Asset Owners
Compliance records, asset investigations and assessments that stand up to scrutiny.
Common Questions
SFGEO is a geotechnical engineering consultancy for Sydney homeowners, builders, engineers and councils. The work runs from the first hole on an empty block, through investigations, assessments and design parameters, to the last inspection before the pour. Every job is quoted per site: a fixed fee in writing within one business day. AS 2870 site classification reports follow as soon as 2 business days from fieldwork.
Not Sure Which You Need?
Describe the project in a sentence. The Principal will tell you what it needs, and what it doesn’t.