BackgroundDeinstitutionalization in mental health care has been an ongoing process for decades. More and more people with severe mental illness (SMI), who previously lived in residential supported housing settings and were formerly homeless, are now living independently in the community but need intensive support to enable independent living. The support provided by regular outpatient teams is inadequate for this target group. This study explored the ingredients for an alternative form of outpatient support: intensive home support (IHS).MethodsConcept mapping was used, following five steps: (1) brainstorming, (2) sorting, (3) rating, (4) statistical analysis & visual representation, and (5) interpretation. Purposive sampling was used to represent several perspectives, including researchers, professionals, peer workers, and policy makers.ResultsExperts (n = 17) participated in the brainstorming step and the sorting and rating steps (n = 14). The 84 generated statements were grouped into 10 clusters:. (1) housing rights; (2) informal collaboration; (3) reciprocity in the community; (4) normalization and citizenship; (5) recovery; (6) sustainable funding; (7) equivalence; (8) flexible, proactive 24/7 support; (9) public health and positive health; and (10) integrated cooperation in support at home.ConclusionsGiven the diversity of the ingredients contained in the clusters, it seems that IHS should be designed according to a holistic approach in collaboration with several sectors. Additionally, IHS is not only the responsibility of care organizations but also the responsibility of national and local governments. Further research about collaboration and integrated care is needed to determine how to implement all of the ingredients in practice.