Guides
Short, factual explainers, with the standard named and the reasoning shown. Read the one that matches your question, or send us the address and skip straight to a price.
A site classification gives your block an AS 2870 site class (A, S, M, H1, H2, E or P) so footings can be designed. What each class means, and how it is decided.
A site classification is a fixed fee: $890 + GST in Sydney, up to $1,290 + GST in regional NSW. What it includes, what moves the price, and when a geotechnical report is quoted.
A site classification suits small structures on simple ground; a geotechnical report covers steep sites, basements, walls and council conditions. How to tell which you need.
Class P on an AS 2870 site classification means the footing is designed for the specific ground, not picked off a table. Why sites come out P, and what happens next.
Sydney sits on sandstone, shale and clay, with sand on the coast and fill in old gullies. What each typically means for an AS 2870 site class, and why neighbours can differ.
When a council condition or certifier asks for a geotechnical report, this is what it covers: the investigation, ground profile, bearing capacity, excavation and retaining advice.
Site classification (small structures, simple ground): check your postcode and accept the fixed fee online. Geotechnical report (steep sites, basements, walls, complex ground, council conditions): send the address and we quote it, usually the same day.