At present, in Thailand many of the problems occurred stemmed from wrong data information on a map. The unexact boundary of administrative areas shown on the map has created bars to development both on the regional and the national level. To survey the country all over again is tremendously costly. The more sensible, economical, and efficeint way is by making use of data already gathered and filed by governmental offices. The cadastle or N.S. 3 concerned is the title deed to a piece of land. By sorting and compiling data from each title deed to a piece of land, a larger and more precise data information on the village level can be obtained. Likewise, the right data information in bigger units, namely 'tambon,' 'amphoe,' and 'changwat' can also be compiled. In the end, the exact perimeter of administrative areas can be shown on a map The map showing right administrative areas is invaluable to a development planner, for it informs him precisely where and what need to develop in the region. Right decision making will lead to a more effective way in developing a region, and on a larger scale, the country as a whole.