This paper deals with the relationship between university public engagement activities and local territories in promoting social innovation processes. In particular, this paper starts from the assumption that since social innovation has become a guiding concept of policies at various scales, opportunities for innovation, i.e., calls for tenders, funding, etc., have multiplied. However, universities should act as intermediary actors so that the bureaucratic and managerial complexities of accessing these opportunities do not risk cutting off the territories and/or the weakest actors. Starting from the experience of the AuroraLAB action–research laboratory of the Politecnico di Torino within the Tonite project financed with European Urban Innovative Actions funds, this article investigates the multiple roles that the university can play in supporting platform spaces for inclusive social innovation based on local needs. This article concludes by highlighting the multi-layered personality of the university in neighbourhoods and the perspectives for socially engaged research.