The Homeless Youth Dual Diagnosis Initiative (HYDDI) is funded by the State and Commonwealth Government following the release of the 2008 Commonwealth Government White Paper The Road Home: A national approach to reducing homelessness and Project i by Melbourne University (2008).¬† HYDDI is implemented through a partnership between Hope Street and the NorthWestern Mental Health (NWMH), the mental health arm of Melbourne Health. A HYDDI Practitioner is employed by NWMH’s Substance Use and Mental Illness Treatment Team (SUMITT) and is co-located at Hope Street.