The unequal struggle between the client and the construction company begins even before the construction phase. Thanks to their experience, construction companies and craftsmen are well-prepared for this situation: they usually have a non-binding answer to every question or criticism and a suitable excuse for every defect. Poor workmanship, if not recognized in time, can become expensive. Such cost traps can be avoided if the client adheres to a few rules and seeks expert advice. For example, with this book, written by authors who share their knowledge about the many cost traps during house construction in an understandable and concentrated form: covering the main and ancillary costs as well as the issues from the excavation to the sealing, from the shell construction to the interior finishing, from the choice of building materials and components to the decision on the most suitable construction systems. It includes 72 cost traps and their causes.