Mathias Heyden (Berlin, Germany) is an architect, and co-founder of the community project K 77. He is assistant professor at the Chair for Urban Design and Urbanisation at the Institute of Architecture, Technical University Berlin, and is an author and curator, and an activist and organizer. Among others, he produced the event and published the book "Under Construction. Strategies of Participatory Architecture and Spatial Appropriation" (with Jesko Fezer, 2003 - 2007), and the exhibition and magazines An Architecture 19-21: "Community Design. Involvement and Architecture in the US since 1963" (with An Architektur, 2008).

Ines Schaber is an artist, photographer, and author living in Berlin, Germany. She studied Fine Art at the Academy in Berlin, architectural theory at Princeton University, and Research Architecture at Goldsmith College in London. Her work addresses the relation of spatial and image politics, e.g. in "movers and shapers" (2001), a project in collaboration with the architect Jörg Stollmann, she investigated the visual politics of master-planned communities in Arizona. In "picture mining" (2006) she explored the relation of historical labor photography to a photographic archive in a former limestone mine below an abandoned landscape in Philadelphia.

Over the course of their careers, Heyden and Schaber have often collaborated providing mutual support for one anothers project.