Soil, geotech & DA insights

Notes from the field on soil classification, geotechnical reporting and getting a Development Application over the line in Sydney.

Geotechnical Report Sydney: What to Expect Working with a Local Consultant

Sydney's geology changes suburb by suburb — from solid North Shore sandstone to reactive Blacktown clays. Here's why that makes your choice of geotechnical consultant matter far more than you might think.

6 October 2026Read article

NSW Erosion and Sediment Control Requirements: What Council Checks Before Your Construction Certificate

Construction Certificates stall when ESCPs miss mandatory elements council assessors are specifically looking for. Here is exactly what your plan must contain to pass the first time.

28 September 2026Read article

How Much Does a Geotechnical Report Cost in Sydney? A Transparent Breakdown

Geotechnical report costs in Sydney vary more than most developers expect. This breakdown explains every cost driver so you can budget accurately and spot an under-scoped quote before it costs you a DA rejection.

24 September 2026Read article

What Is an Erosion and Sediment Control Plan? A Plain-English Guide for Sydney Developers

If your council consent conditions mention an ESCP and you're not sure what that means, this guide explains exactly what the document is, what it must contain, and why getting it right matters before construction starts.

20 September 2026Read article

Sydney Council DA Requirements for Soil and Geotech Reports: Which Councils Demand What

Sydney's 33 councils apply the same NSW planning legislation differently — and a deficiency notice after lodgement is how most developers find out. Here is the council-by-council breakdown you need before you lodge.

16 September 2026Read article

AS 2870 vs USCS Soil Classification: Which One Does Your Sydney Build Actually Need?

Two soil classification systems. One mandatory for your Sydney DA, one completely irrelevant to it. Here's how to tell the difference before it costs you a rejection and weeks of delay.

12 September 2026Read article

When Is a Geotechnical Report Required in NSW? A Developer's Trigger-Event Checklist

A late-stage report request can delay your NSW development approval by weeks. This trigger-event checklist tells you exactly when a geotechnical report is required before you lodge.

12 September 2026Read article