The evolution from Wachsmann’s prefabricated timber houses to the General Panel System demonstrates a shift from designing a particular building toward designing the conditions under which many buildings can be assembled. The early house for Einstein already foregrounds rapid construction, adaptability and compatibility with its environment, but the later collaboration with Walter Gropius radicalises the principle into a general system of prefabrication. Architectural intelligence migrates from the singular composition to the repeatable relation among panels, joints and assembly procedures. The methodological operation is therefore standardisation without total formal predetermination: a limited constructional vocabulary acquires value because it can be recombined. Wachsmann’s relevance to a generative theory of architecture lies precisely in this displacement of authorship from finished form to connection logic. The wider bridge is to modular systems, open building and computational design, where the definition of interfaces can become more consequential than the design of any individual configuration.