The Yomiuri Shimbun

15:12 JST, December 5, 2025

Rising construction costs due to inflation have caused delays and cost spikes in urban redevelopment projects nationwide.

A Yomiuri Shimbun survey found 60% of such projects approved in the last five years experienced construction delays or cost overruns. Some projects have been forced to scale back plans or have been withdrawn before they were approved, raising concerns about the overall impact on city development.

Redevelopment projects consolidate fragmented urban land to develop condominiums, office buildings and other structures and eliminate areas of densely packed wooden housing or establish new public facilities. They are based on the Urban Redevelopment Law that took effect in 1969.

The projects are approved by prefectures or government-designated cities and carried out by........

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