The potential of Geographic Information Systems, GIS, in various types of construction companies is immense. GIS technology helps the project and the construction manager to organize the data and relate them to their spatial associations (spatial imagery system). This provides a powerful means for analyzing, synthesizing information and producing high quality precision for calculation and graphic representation. The purpose of this paper is to shed light on the GIS applications in both the project and construction management at various stages. These stages are site preparation, following up of the project and its time schedule, marketing, and turning over of units and their maintenance. In fact this research recommends that both the construction and the project manager should take advantage of the GIS's salient features and tackle the impediments to its application.