Abstract The present article offers relevant insights into how the evidence-based community development initiative known as the Dream process has had a positive impact on the inclusion, participation and leadership of a marginalized community of Moroccan immigrants in urban Spain. More specifically, we analyse how the commitment to promote dialogic communicative acts and to reduce power communicative acts during the process has attenuated some of the race, gender and class barriers that hindered the community's involvement in dialogic and decision-making spaces aimed at improving their living conditions. In this article, we first introduce the state of the art using studies that have examined the role of interaction and deliberation in community development processes in disadvantaged contexts. Then, we briefly refer to the deterioration of the living conditions of the Moroccan immigrant population in Spain. Finally, we present the main results obtained from the qualitative case study research carried out through the implementation of the communicative methodology. This case study provides both theoretical claims and practical orientations to examine how dialogic approaches can contribute to community development processes in contexts severely affected by racial segregation and poverty.