In Switzerland, substance use disorders (SUD) are responsible for individual suffering and major economic costs. Especially the co-occurrence of SUD with other psychiatric disorders often leads to a revolving door effect and high emergency room attendance. For other severe psychiatric disorders outreach offers have been established, including home treatment (HT). Research has detected several advantages of HT, while noting that this form of treatment is not suitable for SUDs. We implemented an HT module especially for individuals suffering from SUD, called "Hospitalisation addictologique à domicile (HAAD)" which is carried out by a multidisciplinary team and realized in the same way and at the same frequency as in the hospital, but it takes place at home and aims at maintaining the patients in their daily activities and social contacts.