Know the Soil Type & Site Costs of Your New Home Block

Know the Soil Type & Site Costs of Your New Home Block

Why is knowing your soil type important?

A soil test is the first step that any builder is required to take in order to be able to determine what type of slab is needed to support your home before the building commences.

The soil test is done through a physical inspection of your land by a Structural Engineer.

What the testing will tell you is your soil’s reaction and movement to moisture and dryness, so the engineer can then design your home’s slab based on these results.

Nobody wants their house to have a cracked slab in five years – that’s why knowing your soil type is so important.


Classes of Soil

Generally, there are six different soil classifications, starting off at Class A and finishing with E.

  • A – Acceptable
  • S – Satisfactory
  • M – Moderately Reactive
  • H1 & H2 – Highly Reactive
  • E – Extreme
  • P – Problem site (usually as a result of trees on site)

Some classes are more common than others, but Stroud Homes can build on any type of soil, however, some types may result in a more complicated, and therefore more expensive, build.

For example, on a standard 250m2 home the difference between a M (Moderate) soil type and E (Extreme) can be approximately $20,000 when building on an E soil.

The reason for the significant increase in costs is that as you go down the range the soil becomes more reactive, meaning there needs to be more of everything:

More earthworks to allow for deeper footings, more concrete, more steel, more man hours all of which results in a significant increase in slab costs.


Stroud Homes Free Site Evaluation

Stroud Homes Brisbane South Acreage offers their clients a FREE site investigation, during which the team can give you a range of soil type or an expectation.

This will give you a better understanding, and some leverage going into your negotiations with the land agent.

Stroud Homes can organise this prior to your purchase, give you advice on the area, and arrange soil testing to be carried out.

A site evaluation gives you the key information on which to compare one block against another. A free site evaluation can save thousands in site costs by providing important information about:

  • Water
  • Sewers
  • Contours

  • Bushfire risks
  • Noise issues
  • Flood risks

Also, a site evaluation by Stroud Homes will tell you how much soil will have to be moved, the amount of slope of the block, if retaining will be required, and what’s achievable in terms of house design and other dwellings, such as granny flats, garages or sheds.

Getting this key information about your land could potentially save you thousands in site cost and will give you a realistic idea of the end result – your dream home.

Your Local Builders
Bryan Canavan
Bryan Canavan

Ask us about soil types and site costs for your new home build