The department undertakes collaborative research with the local industry and institutions as well as overseas universities and organizations. Such recent collaboration includes:
- Royal Melbourne Institute of Technology (RMIT), Australia: Joint PhD Programme
- Tampere University of Technology, Finland : Staff and student exchange
- Central Engineering ConsultancyBureau : Exchange of technical expertise and knowledge
- Central Provincial Council :Engineering Services - Soil Investigations
- GeotechLimited : Upgrading and utilization of Cone Penetration Testing Machine(CPT) for industry applications (Soil Investigation)
- Tokyo Cement Company Lanka Ltd.
- University of Wollongong (UOW), Australia
- Indian Institute of Technology, Roorkee (IITR), India : Staff and student exchange
- Saitama University, Japan : Staff and student exchange
- Nanyang Technological University (NTU) Singapore : Nanyang Environmental and Water Research
- Research & Development Center, Nippon Koei Co. Ltd. Japan
- Holcim (Lanka) Ltd. : Industrial Partnership Agreement
- Graduate School of Engineering, The University of Tokyo : Graduate programmess for foreign students in Urban Environmental Studies
- University of Bremen, Faculty of Physics and Electrical Engineering& Information Technology
- Soil Tech - Student Projects
- Science and Technology Research Partnership for Sustainable Development (SATREPS)
- WaSo AsiaProject
- Erasmus+