The purpose of this paper is to reveal transition of awareness of problems and policies for urban expansion in Toyama city. Since the 1960s, they had been concerned about the sprawling phenomenon, and proposed the implementation of planned land readjustment in the area adjacent to the existing urban area as a solution, but results were not efficient. On the other hand, they have long had a policy of ensuring the convenience of living in the ever-expanding urban area through transportation. It can be evaluated that the accumulation of such discussions became the basis of "Compact city" policy.

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This paper analyzes the records and the future policies of 1,177 cities regarding the downsizing of commercial zoning areas to examine methods of revising land use regulations to maintain a lively city center. The results revealed the following points: First, commercial zone areas have expanded even as commercial demand has declined. Second, 15 cities have reduced commercial zoning by more than 5ha. Third, only a few cities have planned to reduce or revise commercial zoning in the future, but in those few cities, the zoning was reviewed based on their future land use demand. These findings suggest the need for a clear technical standard for the future operation of appropriate zoning.