Institutionalising the dirt trail. Prompt, participatory and self-built urban upgrading processes in Berlin.

This research aims to analyse the complexity of the very delicate moment when the “dirt trial” of temporary uses †" with all its related practices †" meets the actors of conventional development and economy in a process of institutional reframing. Which are the factors encouraging fruitful collaborations among actors which would be normally lined up poles apart? Is it possible to overpass the impasse which sets the bottom-up against the top-down in favour of a new idea of developing the urban space based on dialogue, mediation and cross-fertilisation?