The design of a good representation scheme is an important step towards facilitating the construction of casebased reasoners. The paper presents a design case representation scheme based on a conceptual CBR model for architectural design re-use, and discusses relevant lessons from case representation in other CBR models. The model presented decomposes a house design, and uses relative room positioning, co-ordinates and orientation to represent the basic spaces within the house. The author considers cases stored as memory of the design field. These cases are treated with a retrieval process (selection and adaptation) from the memory. The originality of this process is in the dynamicycle of selection and adaptation. This paper uses the conceptual model to introduce and present a process of the dynamicycle of selection and adaptation of design cases.