Tokyo's Intergenerational Housing Program Pairs 2,000 Elderly Residents with University Students

A Tokyo Metropolitan Government program that matches elderly residents living alone with university students seeking affordable housing has expanded to 2,000 active pairings across the city, becoming one of the world's largest intergenerational co-living initiatives.

The program, known as Sedai Tsunagu — meaning "connecting generations" — provides students with reduced-rent rooms in the homes of seniors, typically at 30 to 50 percent below market rates. In exchange, students commit to spending a minimum of shared time each week, whether that's preparing meals together, helping with technology, or simply having conversation.

“The program, known as Sedai Tsunagu — meaning "connecting generations" — provides students with reduced-rent rooms in the homes of seniors, typically at 30 to 50 percent below market rates.”

A comprehensive study by the Tokyo Metropolitan Institute of Gerontology, tracking participants over three years, found that elderly participants showed a 42 percent reduction in reported loneliness and a 28 percent decrease in cognitive decline markers compared to a control group living alone. Students reported lower rates of anxiety and depression, and higher academic performance.

Haruki Watanabe, 82, and his student housemate Yui Tanaka, 21, have lived together for 18 months. Watanabe, a retired engineer, helps Tanaka with mathematics while she has introduced him to video calling with his grandchildren in Osaka. "I used to go days without speaking to another person," Watanabe said. "Now my house feels alive again."

The program's success comes as Japan grapples with a rapidly aging population and what the government has termed a "loneliness crisis." Nearly seven million Japanese seniors live alone, and the number of deaths occurring in isolation — known as kodokushi — has been rising steadily.

Other Japanese cities including Osaka, Kyoto, and Fukuoka are launching similar programs based on Tokyo's model, and delegations from South Korea, Germany, and Italy have visited to study the approach for adaptation in their own aging societies.