Background Families of young children with disabilities are faced with ongoing challenges that impact various aspects of family life. Given the increasing emphasis on promoting positive outcomes in these families, the overall aim of the current study was to examine the contribution of child, family, and support characteristics to the quality of life in families of young children with disabilities. Method The sample was recruited from several early childhood intervention programs within metropolitan Melbourne, Australia, and consisted of 64 families of children aged between 3 and 5 years with a developmental delay or disability. Results As a whole, parental perceptions and experiences of family-centred professional support was one of the strongest predictors of family quality of life. The perceived intensity of child behavioural problems as well as support from extended family members also accounted for a significant proportion of unique variance in predicting quality of family life. Conclusion The current findings provide further evidence for the importance of a family-focused approach to intervention that acknowledges and provides support that is tailored to the unique needs of each individual family. The practical implications of these results as well as directions for future research are discussed.