The U.S. military returned the Negishi Housing Area to the city of Yokohama on Tuesday, ending nearly 80 years of American control [1], [3].

The handover marks the culmination of a decades-long process to reduce the burden of military bases on local residents. By reclaiming this land, Yokohama can now implement a large-scale urban redevelopment project designed to integrate healthcare and wellness into the city's infrastructure [2], [6].

The site spans approximately 43 hectares [1] and stretches across the Naka, Minami, and Isogo wards of Yokohama [2]. The U.S. military first acquired the land in 1947 [4], leading to a total occupation period of 79 years [2].

This transition follows a 2004 agreement between the U.S. and Japanese governments to return the property [5]. While the physical return of the land was finalized today, the process began years ago; U.S. military personnel and their families had already completed their withdrawal from the area by 2015 [2].

The Japanese Ministry of Defense spent the intervening years managing the demolition of buildings to prepare the site for civilian use [6]. The city now plans to utilize the vacant land to create a community centered on medical and health themes [2].

City officials said the project aims to improve the quality of life for residents by establishing a hub for health services. The redevelopment is intended to transform a former military zone into a sustainable urban space that serves the public interest [2], [6].

“The U.S. military first acquired the land in 1947”

The return of the Negishi Housing Area represents a significant shift in Yokohama's urban geography, converting a restricted military zone into a public asset. By focusing on medical and health-themed development, the city is attempting to address aging population needs and public health infrastructure through the strategic reuse of reclaimed land.