In short, consulting a geotechnical engineer at all phases of home development is a sound strategy for risk management and the sooner you bring one in, the better chance you have of mitigating cost overruns later. Some issues that may be prevented by a professional assessment can be sorted into three main categories from the source of the damage: water, soil compaction or swelling, and slope stability.
Water damage occurs from flooding hazards not considered in building elevations and inadequate or compromised drainage systems.
Structural damage, settlement, or cracking of the foundations and retaining walls may occur when the fill material is inadequately compacted or the subgrade material is poor. Swelling from frost or water may cause movement and/or cracking of the foundations.
Slope failure can cause damage to retaining walls, the structure, and loss of yard space.