The future of the iconic Nakano Sunplaza remains a subject of intense debate as the Nakano Ward government maintains its commitment to a demolition-based redevelopment strategy. Despite the collapse of the initial project led by Nomura Real Estate, which resulted in the site remaining in a state of disuse since its July 2023 closure, the municipal government has announced plans to seek new operators for a facility scheduled for completion in 2034.
The ward’s position is anchored in the facility’s age and the absence of detailed renovation drawings, which officials estimate would require a two-year, 674-million-yen investigation to reconstruct. However, this stance has met with significant pushback from architectural experts who argue that the building’s structural integrity remains sound and that the current “scrap-and-build” approach ignores sustainable alternatives.
Did You Know?
The late architect Shoji Hayashi, who designed Nakano Sunplaza, stated during his lifetime that the building was engineered to withstand 100 to 200 years of use. Tokyo Metropolitan Government records show the facility received the highest possible rating of “3” in recent seismic safety inspections.
Expert Insight:
The conflict over Nakano Sunplaza highlights a fundamental tension in modern urban planning: the struggle between the desire for new, high-capacity infrastructure and the preservation of cultural landmarks. As construction costs rise, the economic viability of traditional demolition is increasingly being questioned by experts who argue that structural longevity should be prioritized over complete replacement.
Conflicting Perspectives on Renovation
Architect Ryuzo Shiraie of the Shiraie Architectural Institute, who helped design the “Tsuzumi-mon” gate at Kanazawa Station, asserts that the Sunplaza is a cultural asset that should be preserved. He contends that the original construction blueprints are sufficient for renovation and that the lack of specific “renovation drawings” is not a valid justification for demolition.
Architect Shigeru Aoki, a proponent of “refining architecture,” echoes this sentiment, noting that the building has undergone no major structural changes since its 1973 completion, save for a minor expansion in 1997. He suggests that the building’s current state does not necessitate a full-scale replacement and that the industry must move toward reusing existing structures to mature as a market.
Implications for the Future
While the Nakano Ward government continues to cite the need for improved pedestrian flow around the station and disaster resilience as reasons for the project, experts suggest that these goals could potentially be achieved without destroying the existing structure. As the ward moves forward with its 2034 development timeline, the discourse surrounding the facility is likely to continue, particularly as public sentiment—voiced by figures such as talent Shoko Nakagawa—continues to favor preservation over total replacement.
Frequently Asked Questions
Why is the Nakano Ward government planning to demolish the facility?
The ward cites the building’s advanced age, concerns regarding seismic performance, and the lack of existing renovation drawings as primary reasons for proceeding with demolition rather than renovation.

What do architectural experts suggest as an alternative?
Experts such as Ryuzo Shiraie and Shigeru Aoki argue that the building’s original structural design and current condition allow for renovation. They contend that existing blueprints are sufficient for this purpose and that the facility could serve the community for many more years if properly maintained.
What is the current status of the redevelopment project?
Following the cancellation of the agreement with the initial developer group, the ward is currently seeking new business partners for a project aimed at opening a new facility by 2034, while maintaining its policy of site clearance.
Given the potential for structural longevity, should urban development prioritize the preservation of iconic architecture over new construction?
