This research is based on the theoretical framework of the Theory of Planned Behaviour, which identified the initial basements about the impact of attitude, awareness, and trust to this theory and how much it influences the future behaviour intention of caregivers of children with autism spectrum disorders (ASD). A field survey was conducted in Malacca, Malaysia to collect data from parents and caregivers of children with ASD. Structural equation modelling using the partial least squares (PLS) method with a bootstrap estimate was used to test the research model. The studies related to attitude, awareness, and trust in influencing behaviour intention are available in the Malaysia context. The finding of this study showed that caregivers have high behaviour intention to change the normal environment to more suitable care-centre physical environment for their children with ASD. The behaviour intention significantly influences by the variable of attitude and trust. Furthermore, the variable of trust successfully mediates the relationship between attitude and awareness toward behaviour intention. The results of this study indicate that this research model provide an effective prediction of the behaviour intention and provides valuable implications for academicians and practitioners. Children with ASD have a diverse, complex, and inescapable effect. The interest in setting up a suitable care-centre for children with ASD has mushroomed during the past few years. The key challenge for this enrichment face while serving good to these young children with ASD is the financial resources. Thus, to encounter the lack insight into this core issue, the usage of waqf as financial resource had been highlighted.