SUM (Settlements and Urban Management) Consult GmbH is a consulting company established in 1988 in Wiesbaden, Germany. It is managed by two partners: Roland Ziss (urban economist) and Joanna Kotowski (urban and social sector specialist). Their work targets poverty alleviation and social development, focusing on the areas of human settlements and housing finance, social infrastructure and community development, violence prevention, and youth-oriented social integration.
