What Are Site Costs?

In this article, we are going to discuss site costs. What they are, how much they are and why they need to be paid when you are building your new home. Some of the things discussed in this article won’t apply for everyone so just keep in mind that everyone’s situation is different.

What Are Site Costs?

Site costs are the amount you must pay your builder in order for them to prepare to start building your home. It covers the costs of excavating/digging your block to bring it up or down to the proper level. It also means doing whatever needs to be done to the site to allow them to pour the concrete slab or footings safely and so that everything is structurally sound.

What needs to be done to your block of land will be different to everybody else, you may have a poor soil type and require deeper concrete footings to be poured before your slab is poured or you may have a lot of rock or hard clay that requires heavy machinery to break up the rock or dig the hard clay. On the other hand, you could have very soft, sandy soil which would mean the block would need to be fixed to make it safe to build on.

There are different soil types that determine the quality of the soil. The better the grade of soil usually means the site costs would be cheaper.

Different Soil Types

There are different soil types that can affect your site costs. These different soil types are:

  • Class A: Most sand and rock sites with little or no ground movement from moisture changes
  • Class S: Slightly reactive clay sites, which may experience only slight ground movement from moisture changes
  • Class M: Moderately reactive clay or silt sites, which may experience moderate ground movement from moisture changes
  • Class H1: Highly reactive clay sites, which may experience high ground movement from moisture changes
  • Class H2: Highly reactive clay sites, which may experience very high ground movement from moisture changes
  • Class E: Extremely reactive sites, which may experience extreme ground movement from moisture changes
  • Class P: Sites which include filled sites (refer to AS 28702.4.6), soft soils, such as soft clay or silt or loose sands; landslip; mine subsidence; collapsing soils; soils subject to erosion; reactive sites subject to abnormal moisture conditionsor sites which cannot be classified otherwise.

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