Aim: To improve the citizens' life situation through strengthened cooperation and coherent effortsIn more countries in Europe, community-based care is a substantial part of mental health. In the past decades, more efforts have been initiated in incorporating community-based care to decrease involuntary admissions. Few projects focus on the most complex mental health situations.Methods:The project includes a collaboration between five hospitals and 22 communities. The included sectors meet regarding patients with the most complex situations over one year. The consent was to create a common understanding, goals and solutions based on a holistic understanding of the patient/citizen.Results:The number of involuntary seclusions decreased and the number of admissions decreased significantly in the project period compared to the historic period.Implications:The results support additional efforts in preventing involuntary admissions through better collaboration between sectors. More research is needed on effect and economy in collaboration models.