The boundaries of Goa are surrounded by Maharashtra in the north, Karnataka in the east and south, and the Arabian Sea along the west coast. Goa is one of the popular tourist destinations in India. As the population in Goa is increasing, the construction activities have also increased. The soil is the most important yet most neglected in a construction project. All structures, buildings, roads, bridges, dams and even life itself is based on the soil. The soil is the natural foundation that supports all structures and investment. Most clients see soil investigation as a waste of fund despite being the cheapest in the construction process, hardly is the cost of soil test up to one percent of the cost of construction. Some contractors too ignore the importance of proper soil investigation and analysis and base their design on assumed bearing capacity and rate of settlement. Index properties of soil such as specific gravity, moisture content, dry density, wet density etc. are the important parameters in geotechnical engineering and they are changing from place to place both along the depth and width of the stratum. It is important for the geotechnical engineers to know about variation of the index properties of soil before carrying out design and construction of any geotechnical structure. Any field or laboratory soil testing will provide result which is too specific for a particular location to generalize over an extended area. In this project, an attempt is made to develop a methodology to map the important index properties of soil by using Geographical Information System (GIS) and Global Positioning System (GPS) using existing soil exploration reports. The method suggested in this paper will help all the soil exploration agencies and practicing geotechnical engineers for immediate decision making process about soil suitability as foundation materials.