By using an inductive qualitative approach, investigating the micro scale, that is, the individual level, we conducted a case study on the PermaKulturRaum in Goettingen, Germany—an experimental space for students to explore alternative lifedesigns. On the supposition that only a radical transition can achieve sustainability on a global scale, we identified permaculture as an appropriate method to achieve this. However, permaculture is not widely spread and largely ignored by scientific research. We started a first attempt to understand the underlying motivations of permaculturists. Using behavioral studies as our theoretical framework, we found out that behavioral determinants, like biospheric values, green-identity, and the intention to act green were extraordinarily high and that the core of their pro-environmental behavior is most likely their strong intrinsic motivation. Regarding the PermaKulturRaum, we could formulate following theses: (1) a comprehensive implementation of permacultural aspects requires an urge for an alternative lifedesign, (2) a radical lifedesign attracts primarily like-minded people, which creates isolated spaces, (3) early childhood experiences or single key moments are important to trigger a pro-environmental interest.