In this book I analyse a need to regulate the field of geotechnical engineering explorations to ensure the sustainable use of land and the earth’s crust including the resources of natural building materials. The analyses of the mutual impact of processes caused by human activities and natural conditions and processes is an essential prerequisite to environmentally sustainable planning, designing and building. This ensures maximum management of the accompanying environmental and socio-economic risks and costs. The output of a sustainable project solution is an economically efficient, environmentally friendly and resource-sparing stable building, which at the same time ensures a safe and healthy environment for a human being. Everything above-mentioned applies also to constructions (railroads, highways, airports, dams, wharfs, garbage damps, collectors and other infrastructure elements). The above analyses should be useful to the professionals dealing with geotechnical engineering research or anyone else dealing with real estate development or spatial planning.