Key groups were identified in this case: one of the leaders who initiated the project ‘Nowe Zerniki’ in Wrocław and ensured its implementation, a resident who lived in ‘Kooperatywa Mieszkaniowa Nowe Zerniki’ and was involved in the whole investment process and the housing research community, including researchers, architects, NGOs, finally, there was the leader and a resident of the ‘Pomorze’ housing project in Gdynia. In total, six interviews were conducted, with the duration of individual interviews varying from 1 to 1.5 h. Two leaders were selected from Wroclaw and Gdynia, two residents representing collaborative housing initiatives from Wrocław and Gdynia, a representative of a foundation preparing a new housing cooperative project, as well as a researcher and an architect working on affordable housing.