Another problem can be a not very good geology of the site — the presence of peat bogs and thixotropic clay, which may prevent the construction of stable structures. An examination of the hydrogeological condition of the soil will result in a good amount, but it is better to do this before the purchase execution. True, it does not make sense if the area of your site is only a couple of acres. To do this, you can look at the foundations of structures in neighbors. However, the decision to design the foundation and its type is better to entrust professionals.