The growing trend on moving from isolated services to dynamically integrated/composed ones in a context where the cyber and physical worlds are interlinked, led to emergence of the concept of Collaborative CPSs (CCPSs). These systems rely on collaboration among internal and external components. An important aspect, in this regard, is the establishment of a design methodology for those systems. To satisfy agility requirements, the design process should be accomplished in a modular way, so that the system can be updated by adding or replacing modules. In traditional ICT systems the design process can be split into two parts/phases: the computational model design, i.e., functionality modules, and the design of a shell or service layer, providing the auxiliary services to utilize the computational model, e.g., security, human-machine interface, etc. In the case of CCPS design, the process also must consider the collaborative aspects within the design workflow. In the proposed work, we provide a model and design pattern (framework and a set of steps) for building Collaborative CPSs. To illustrate the approach, a smart home use-case is used.