Inspired by the configuration possibilities by brick and timber block buildings of first generation industrialism, Industrial Democratic Design (IDD) is an open system of best-practice rules for the design of ‘ordinary’ buildings offering a range of everyday purposes (re)approaching an adaptable building culture. IDD operates towards three aims – an increased understanding of embodied energy, the use of industrial production and a wider stakeholder influence. The open system supports a variety of structural platforms (e.g. concrete, steel, wood), facades, and exterior applications (e.g. balcony, sun screen, wind-shield), while providing a set of genarl composition rules surrounding building depth (e.g. between 13-17m), storey height, load bearing facades, central zones for service and access and modularity. The system uses intermediary elements as a product innovation to separate two or more building layers aiding in the reversibility of construction and providing a clearer hierarchy of assembly. It augments the use of intermediary components by providing a set of rules for each building layer (e.g. skin – use of light-weight construction, modularity and sub-dividing, detachable fixations and preservation of materials). The proposal provides examples of an interesting range of future scenarios in form, use, and user customisation.