Integrating primary care and behavioural health services improves access to services and health outcomes among individuals with serious mental illness. Integrated care is particularly promising for racial and ethnic minority individuals given higher rates of chronic illnesses and poorer access to and quality of care compared to Whites. However, little is known about integrated care implementation in non-White populations. The aim of this study is to identify facilitators and barriers to successful implementation of primary care-behavioural health integration in a multilingual behavioural healthcare setting.