Accreditations
Our integrated management systems are accredited to the following:
- ISO 9001:2015 Quality Management System 
- ISO 14001:2015 Environmental Management System 
- ISO 27001:2017 Information Security Management System 
- ISO 45001:2018 Occupational Health & Safety Management System 
- ISO 50001:2018 Energy Management System 
In addition to our management system accreditations, we also hold the following certifications:
- Safe-T-Cert ‘A’ Rating 
- Investors in Diversity – Silver 
Memberships
Collen is a member of the following trade bodies, organisations and educational institutions:
- Construction Industry Federation (CIF) 
- Master Builders and Contractor Association (MBCA) 
- Construction Industry Register Ireland (CIRI) 
- Chartered Institute of Building (CIOB) – Training Partner 
- Institute of Engineers Ireland (IEI) – Corporate Partner 
- National Irish Safety Organisation (NISO) 
- Institute of Occupational Safety & Health (IOSH) 
- Heritage Contractors Association 
- Swedish Data Centre Association 
- Irish Green Building Council (IGBC) – Silver Member 
- Homebond 
- Irish Management Institute (IMI) 
- Technological University Dublin (TUD) - Partnership 
- Irish Concrete Society 
- German-Irish Chamber of Industry and Commerce 
- Considerate Constructors Scheme 
As a member of the above organisations, we have access to the relevant technical databases and professional advice. Additionally, we have a number of personnel who serve as members of various industry committees.