Central to Canvas is the smart marriage between an adaptive, circular building system and an interactive design application and approach, which gives collectives a better grip on programme, price and quality. That's necessary: ​​practice shows that bringing together individual requirements and tastes into a strong, joint, affordable and sustainable whole goes not without a struggle. When the design process starts, and dreams become tangible, this deepens the group process and consequent advancing insights, the consideration of different 'sustainable scenarios' and fluctuating construction costs ask for a flexible design approach. In addition, it is the rule rather than the exception that participants disembark or board in the meantime. In fact, initiative groups are often open to expansion at a later stage of the development process. Finally, political and/or official lack of experience or willingness regarding collective development regularly results in slow or dead-end processes. The ability to smoothly translate loose-fixed dreams into a qualitative and realistic presentation (which also is in line with local sustainability goals) can be of decisive importance in this respect.