In this final paper, the process of contracting work at this villa with the bid cost estimate. At the same time they respected the wishes of investors with certain corrections by the contractor. After accepting the offer, an agreement was appropriate agreement.This below defined technology taking measures on site for individual items. Measurements are the basis for designing items and then the details of cutting and processing profiles and fittings. The items are made of the profile of the renowned Italian manufacturer, dyed coating method in gray color RAL 9006. Cutting, assembling profiles and assembly of fittings is a technological extension of making individual items. Glazing is the final stage of development, not least because of the size of glass surfaces. The whole time manipulation profiles are protected by a protective film. During installation, as the final stage, in addition to the technical requirements necessary to take into account the Occupational Safety and Health. The last phase of the handover of the building with all the built-in items in full their function, and according to the plans for each individual item.