The close connection between communities and learning as a social and collective endeavour has led many scholars to consider communities of practice as a driver for solving complex problems. This paper takes up the literature on community and the concept of quasi-community in sustainable development and analyses a concrete case study—the so-called “lake and former SNIA factory” in Rome, Italy. The aim of the article is to investigate the emerging socio-technical interactions considering a quasi-community involved in an interdisciplinary regenerative sustainable development project related to the lake. The research design includes semi-structured interviews and observation during the interdisciplinary fieldwork visit. A thematic analysis with an inductive approach is proposed to reconstruct the socio-technical network as a potential learning experience for the actors involved. In the end, some educational and pedagogical implications and recommendations in the context of education for sustainable development are developed. © The Author(s), under exclusive licence to Springer Nature Switzerland