This study aims at examining the appropriate future urban structure for a provincial small town from the viewpoint of urban infrastructure development and maintenance cost in Fuchu city, Hiroshima. Therefore, authors make 43 future scenarios of urban structure and the formulas for calculating development and maintenance cost. Then authors calculate the costs for all scenarios, and compare them. As a result, those costs are different according to arrangement of dense urban area and population density. For example, the costs are lower, if the dense urban areas are mutually adjacent and population density is higher.
