Dirk Donath from Bauhaus University, Germany says the success of his Holcim Awards Bronze winning project comes from trying to act and be treated not as an architect – but to play the role of a mediator to share capacities of the community. “Incremental Construction: Low-cost modular housing scheme” in Addis Ababa, Ethiopia responds to the housing challenge of rapid urbanization, and develops a purposefully incomplete structure that is both affordable and rapid to assemble.