This graduation comes from a deep interest in understanding why some buildings foster vibrant communities, while others do not. Now that interest in cohousing is rapidly growing, both from grassroots movements and top-down initiatives, grasping the factors that explain why some communities thrive has become increasingly significant. Cohousing may have many advantages from mental health, and informal care to enviromental benefits. Yet it is not simply shared spaces that create these advantages. It is the community itself. The goal of this graduation was therefore to bundle insights on how to design cohousing so that it facilitates community engagement.

A pattern language was developed with the intention of aiding both resident-led initiatives and architects. A pattern language is a network of interrelated design solutions to common problems. After a wide literature review, case studies and in practice testing, a cohousing pattern language was formulated that balances complexity and comprehensiveness. 7 base principles and 40 design patterns explain how architecture can facilitate community engagement. These patterns and principles are integrated into an 8-step framework tailored for the Dutch cohousing development context.

For the design part of this graduation project, the pattern language has been implemented to design an affordable and sustainable floating cohousing building for the Dutch delta. This architectural design addresses the housing and space crisis by exploring the floating frontier of architecture. The floating urban villa may house 5 to 20 people and with minimal adaptions can facilitate a wide range of engaged communities. Up to 7 floating villas can together form a layered cooperative housing community with a layered framework for expression.

There is simple formula or design solution for cohousing so that it facilitates community engagement. Each community, location, and project is unique and requires specific and co-designed solutions. The book may help that process as it has identified abstract principles and concrete patterns that provide valuable guidance for designing spaces that support thriving, engaged communities. These are applicable to a wide range of cohousing lifestyle visions, architectural typologies and contexts. Ultimately, it is up to architects and residents to creatively integrate constraints, principles, context, and patterns to co-create cohousing architecture that facilitates their unique, engaged community.