A secure home is widely recognised as providing a fundamental basis for building mental health. However, for many people with a mental illness, achieving or maintaining stable homes can prove difficult, and some slip into unstable housing or even homelessness. It is essential that mental health issues are a part of any discussion on homelessness and housing. The importance of housing for people with mental illness has been repeatedly acknowledged at the highest levels. This recognition has, however, yet to be reflected in policies and funding. This report explores how this lack of recognition affects mental health and homelessness in Australia, and identifies what needs to be done to improve housing outcomes for those adversely affected by this glaring oversight.