After creating the project of the building, you can already take on the calculation of the necessary materials and their total cost. Depending on the wishes in the use of specific building and finishing materials, the amount necessary to cover all expenses will also vibrate. That is why some, especially important points, should be discussed with knowledgeable people who can suggest alternative methods and materials, which will help save a lot of money. It is very important to opt for the right equipment, on which not only comfort will depend, but also safety during operation in the future. In addition, well-chosen equipment will help to avoid problems that often arise due to inconsistency with the requirements initially prescribed by the project.