Affiliates
| Japan |
|---|
| Tokyo Society of Architects & Building Engineers |
| Association of Japanese Consulting Engineers |
| Japan Consulting Engineers Association |
| The Society of Heating, Air-conditioning and Sanitary Engineers of Japan |
| The Japan Institute of Architects |
| The Japan Installation Engineer Office Association |
| The Association of Mechanical & Electrical Consulting Engineers of Tokyo |
| Healthcare Engineering Association of Japan |
| Japan Association of Health Service Management Consultants |
| Japan Facility Management Promotion Association |
| Japan Building Mechanical and Electrical Engineers Association |
| The Institute of Electrical Installation Engineers of Japan |
| Architectural Institute of Japan) |
| The Japan Society of Mechanical Engineers |
| Japan Air Cleaning Association |
| Institute of Noise Control Engineering, Japan |
| Japan Society of Refrigerating and Air Conditioning Engineers |
| The Illuminating Engineering Institute of Japan |
| Institute for Building Environment and Energy Conservation |
| The Building Center of Japan |
| Japan International Cooperation Center :JICE |
| Japan Tourist Accommodation Association |
| Association for Promotion of International Cooperation :APIC |
| The Tokyo Chamber of Commerce and Industry |
| Non-Profit Organization Building Services Commissioning Association, BSCA |
| Overseas |
| International Federation of Consulting Engineers :FIDIC |
| International Federation of Hospital Engineering :I.F.H.E. |
| The American Society of Heating, Refrigerating and Air-conditioning Engineers, Inc. :ASHRAE |
| The Chartered Institution of Building Services Engineers :CIBSE The Institute of Healthcare Engineering and Estate Management (IHEEM) The Association of Consulting Engineers (ACE) American Society of Plumbing Engineers (ASPE) American Society of Sanitary Engineering (ASSE) |
| U.S. Green Building Council:USGBC |