The term Geotech report is commonly used in the building industry but can refer to many types of geotechnical investigations and reports or assessments that can range in cost from $700 up to $3,000+. Before a cost can be determined, we need to identify what soil testing is required. We have highlighted a range of costs for some types of tests, and where possible, we can provide specific costs online based on your site location.
Typically known as a Lot or Site Classification in NSW or Soil Test Report in QLD, this geotechnical report is generally required for a standard residential site by engineers, builders and homeowners and is used to design a residential slab. Click here for a sample
A number of items contribute to the price of a Geotech report and it is important that the extent of the testing is verified and clear to you before you purchase.
For you, the starting point is to ensure that the testing is going to be performed to Australian Standard AS2870. Wherever possible a vehicle mounted drilling machine should be used to achieve the necessary depth.
Based on the answers to these questions, a Lot Classification can generally cost between $700 and $1200 (enter your postcode to find your cost below).
Sometimes, geographic locations and DA conditions require that further tests are performed, e.g., Salinity testing, Acid Sulphate or Slope Stability to name some of the more common ones. If you are getting a quote and you have DA conditions that state geotechnical requirements, make sure you let the company know or better still, send them the relevant documents. Read more
Depending on your location the following assessments are also common for residential construction including granny flats:
Cost: Costs vary depending on if testing and reports are done separately or in conjunction with a Lot classification or other soil testing.
Subdivision compaction and removal of soil from sites require a number of regulatory requirements for testing to be performed prior to continuing onsite. Due to the majority of subdivisions in NSW and QLD being built on areas with imported fill, the fill needs to have the level of compaction tested for continuity of density.
When moving soil from site to site, VENM/ENM testing must be carried out to meet EPA regulations. This testing determines if the soil is virgin or non virgin in its’ characteristics, which will effect where the soil can be used and or the cost to dump it. Failure to provide the testing certification when requested may result in a hefty fine. Some of the tests carried in these situations are:
Cost: Costs vary depending on if testing and reports are done separately or in conjunction with a Lot classification or other soil testing.