#Japan #Tokyo #Shinagawa #Mitsubishi Estate #Tokyu Meguro Line

Major Urban Redevelopment Project in Shinagawa

Mitsubishi Estate Residential and Nittetsu Kowa Real Estate have jointly announced a significant urban redevelopment project in Shinagawa, Tokyo. This initiative involves the establishment of the Koyama 3-chome District 1 Redevelopment Association, which received approval from the Tokyo Metropolitan Government on November 27, 2025. Following the general meeting on December 23, 2025, this association was officially formed to bring about the community transformation envisioned for this area.

Project Highlights

The project's key characteristics are:

1. Unique Mixed-Use Community: Designed to function as a vibrant living hub, the project will combine multi-generational housing with a bustling shopping district. This will create a diverse urban environment appealing to residents of all ages.

2. Enhanced Public Spaces and Walkability: Central to the design is the creation of open spaces and a pedestrian-friendly environment. Public squares will serve not only as community symbols but also as informal gathering spots for interaction, relaxation, and the promotion of the shopping area’s vibrancy.

3. Improved Disaster Resilience: The project places a strong emphasis on safety, integrating disaster response features such as emergency plazas and storage facilities. Such additions are intended to bolster the area’s defenses against earthquakes and fires, ensuring community resilience in times of crisis.

The redevelopment will occur in a 1.4-hectare area near the Musashikoyama Station on the Tokyu Meguro Line, facing the entrance of the Palm shopping district. The plan includes a 145-meter tall residential tower housing around 850 units. The lower floors will preserve the charm of the existing shopping street while incorporating commercial facilities such as galleries and decks on the second level to enhance accessibility and engagement.

Location and Context

Located in a highly accessible neighborhood adjacent to the Musashikoyama Station, the redevelopment area is strategically positioned along the urban planning road No. 26. This locale has a unique combination of commercial activities and residential space, fostering a cohesive community atmosphere. However, the region also presents challenges, particularly concerning safety due to the presence of older wooden structures and aging residences.

Challenges such as upgrading the shopping arcade and enhancing rest areas and the number of shops are pivotal to improving the area's allure. Meanwhile, there is a pressing need to ensure pedestrian safety by addressing issues of traffic flow within the district.

In response, the project aims to reinforce structural safety, increase overall resilience against disasters, and preserve vital commercial functions while integrating footpath and bicycle facility enhancements for safer routes.

Moreover, the redevelopment sits at the confluence of two key areas—Musashikoyama Station and the former Hiranuma Elementary School site, marked as a 'hub of activity' that is anticipated to significantly reinvigorate the neighborhood.

Timeline and Future Developments

The project's trajectory has been marked by key milestones, including:

• - Aug 2011: Establishment of the deliberation council for district improvement.
• - May 2012: Formation of a preparatory association.
• - Mar 2022: Approval of urban planning in the Musashikoyama vitality axis district.
• - Jul 2022: Official approval of the urban redevelopment project plan.
• - Nov 2025: Permission granted for the establishment of a redevelopment association.
• - 2027: Expected approval of the rights conversion plan.
• - 2033: Project completion projected.

Please note that schedules are estimates and may change over time.

Project Overview

• - Project Name: Koyama 3-chome District 1 Urban Redevelopment Project
• - Location: 21, 24, 25, 26 Koyama 3-chome, Shinagawa Ward, Tokyo
• - Area: Approximately 1.4 hectares
• - Site Area: About 11,280 square meters
• - Floor Space: Approximately 127,000 square meters
• - Main Uses: Residential units, commercial spaces, support facilities, and parking lots.
• - Anticipated Residential Units: About 850
• - Participating Associations: Mitsubishi Estate Residential, Nittetsu Kowa Real Estate
• - Project Manager: Obayashi Corporation

All information provided is subject to change as the project progresses.