Setagaya-Ku Fukasawa Symbiotic Housing

The Fukasawa Symbiotic Housing Complex in Tokyo, completed in 1997, is a model for sustainable public housing in one of the world’s densest cities. It provides 70 apartments for low- and middle-income families, older residents, and people with disabilities, while promoting environmental conservation and strong community life.
The project replaced a run-down wooden housing area with five apartment blocks surrounded by green space, gardens, and playgrounds. Communal facilities include a meeting hall and a day centre, encouraging interaction between residents and neighbours. Sixteen original residents returned and helped form an active community, with committees organising cleaning, recycling, and gardening.
Environmental sustainability is central to the design. Apartments are oriented for natural light and ventilation, with passive heating and cooling features. Solar panels and small wind turbines provide energy for lighting, water circulation, and heating in the day centre. Rainwater is collected for plant watering, permeable pavements reduce runoff, and green rooftops and preserved trees help cool the site and support local biodiversity. Families use around 30% less energy than typical Tokyo households.
Socially, the complex integrates residents of different ages and incomes. Dedicated apartments support elderly residents and wheelchair users, while children have safe places to play. This mix has created a rare, close-knit community in urban Tokyo.
The project was funded entirely by public housing budgets at a cost only slightly above the local average. Rents remain affordable, and parking is optional.
Fukasawa has become a reference point for sustainable housing in Japan, showing how environmental design, community participation, and public investment can create healthier, more connected urban living. Its success has inspired similar projects across the country.