Proximity intervention is increasingly used in Quebec’s low-income housing (HLM) to reach the residents and to encourage them to use the services offered by the community. This article presents the results of a research project on local networks, proximity intervention and the impact of their action on the residents of six low-income housing projects. By interviewing local actors, social workers and tenants and through the actor network theory, it documents the deployment of these interventions, their challenges and their impacts.