We know that companies handle their internal processes in different ways. But how do these different approaches affect the way they use information technology? In this paper we will focus the building supply companies and their use of IT. A major survey on manufacturing companies has been carried through in four regions of Sweden. The survey is about finding out to what extent Best Practice is used within the companies and 220 questions have been put to the CEOs of the firms. These questions were grouped into six categories. One of the processes that have been studied is the use of IT. In this survey all of the companies came from the county of Örebro and the region of outer Gothenburg. When this study was carried through it was noticed that the building material suppliers used the IT differently or less efficiently compared to other lines of business. For example, the employees of the building material suppliers seem to use the PC less often than most of other lines of businesses, even though they have the same IT resources. The purpose of this paper is to discuss the use of IT within the group of building material suppliers compared to other lines of business and also how an improved use of IT in the building supply company can increase the efficiency of construction projects.