Melanie Lombard is Senior Lecturer in the Urban Studies and Planning Department at University of Sheffield, UK. Her research explores aspects of urban informality, relating particularly to housing, land and place, through a focus on urban residents’ everyday constructive activities, in cities in Latin America, Africa and the UK. She has published widely in journals and contributed chapters to several edited collections. Philipp Horn is Senior Lecturer in the Department of Urban Studies and Planning at the University of Sheffield, UK. His research focuses on inclusive urban development, indigenous urbanization, youth rights, and participatory planning in the global South, with a regional focus on Latin America. He has published numerous journal articles, books, book chapters and working papers.