Introduction

Expert in urban crowdsourcing and public participation. In 1998, he founded his consulting agency Urbanista. In 2009, he founded the participatory think tank Nexthamburg. With Nexthamburg, Petrin has created a comprehensive toolset for urbanistic crowdsourcing. Petrin is a member of the German academy of urban design and planning and convent member at the German Foundation for Building Culture. For his work at the intersection of urban design and participation, he has received several awards. Since 2013, Petrin is a visiting professor for urban management at the University of Kassel.