The aim of this research was to assess the impact of assertive community treatment (ACT) team on length of stay in full time hospitalization units. We also evaluated the impact on days spent with coercion (seclusion and physical restraint) and emergency services use. We used a pre-post study model, comparing a same cohort of patients one year before introduction of the ACT intervention, with one year after the ACT team was launched. We observed a significant diminution of days spent in full time hospital services, no modification on emergency services use and a significant diminution on use of coercion. These results confirm that community based mobile team is a good alternative – in the French healthcare system – to full time hospitalizations services in regards to benefits on quality of life and autonomy procured by such intervention for users and their relatives.