Abstract
This paper observes the diffusion of Italian master plan and PdF(Program of building) from the City Planning Act(1942). Their numbers are increasing by their obligation of government ordinances; 100 cities designated in 1954, 4022 cities in 1971, and now almost cities are designated by decentralized regions from 1972. This research was composed by the several research in the different period of government ordinances and their reports. This paper identify many differences from Japanese conditions of Master Plans. For examples; the municipal authority of Building control by land-use zoning of Master Plan, the license of Planner, and the approval process of the Master Plan. The conclusion of this paper emphasize the importance of proposals to the citizens by planners and their approval process by the city council and the region
