We found this housing model during the Senegal meeting at the artist space Portes & Passages. A local artist explained the round house: Inside the building exist various separated apartments so that each resident has his private living space. Steeping outside to the common inner courtyard you find the other residents to share a coffee, a conversation etc.
Traditional architecture combining private and common living areas (e.g. Dayak long houses in Kalimantan, Borneo, Indonesia) and new models (e.g. based on ecological criteria) exist. But there are not current practice. So more housing that offers space for sharing, space to start a Minga anytime, is still utopian.