One of the most common mistakes many home buyers make after finding their “dream plot” is to choose their “dream house”, without giving thought to whether that house really suits the plot and the consequences that may result, such as pile driving, blasting and filling. These measures may entail tens of thousands in added costs.
Determining the cost of the foundation is difficult, even for experienced professionals. The best approach, if you feel uncertain, is to arrange a geotechnical study and obtain a foundation and plot plan. The associated cost is always money well spent.