The initial aim with the Green Building Cookbook was to create an archive of sustainable building materials and elements, that could potentially serve as a guide and knowledge-base for architects. In the course of the project it has developed into an archive of the parts making up one specific building. This enabled thorough research and development of the chosen materials. This method of reviewing, selecting and adapting is what formed the process and in turn the building, Villa Håknäs. The shift towards a more sustainable construction sector has already begun, and the we as architects can be a driving force in that shift.