The Housing and Accommodation Support Initiative (HASI) is a jointly funded NSW Department of Health and NSW Department of Housing (DOH) program, which aims to improve housing stability and community participation for people with mental illness through community based accommodation and coordinated support services. HASI Stage One provides accommodation support places to over 100 people with complex mental health problems and high levels of psychiatric disability. The Social Policy Research Centre (SPRC) is evaluating this program. This report presents the first phase of evaluation findings of HASI Stage One. HASI is a three-way partnership between NSW Health, DOH and NGOs, which is jointly funded by NSW Health and DOH. It aims to assist people with mental health problems requiring accommodation (disability) support to participate in community life, maintain successful tenancies and improve their quality of life. HASI incorporates a range of support levels from low to high.