At a European and international level, the ILS cooperates with numerous universities and non-university research institutes on a project-by-project basis. This mainly includes EU-funded research projects as well as subject-specific cooperations on socio-spatial inequality research, urban open space development, reurbanisation, planning culture and migration issues.
Formal cooperation agreements are in place with the (USA), University of Missouri-St. Louis (USA), the Portland State University (Switzerland) and the Swiss Federal Institute for Forest, Snow and Landscape Research. Institute for Urban and Regional Research (Austria)
The ILS is also a member of international networks such as , AESOP, EURA, UERA etc. ENHR