Contactos Internacionais
América
| Empresa | País | Escritórios | Website |
| Delcan | Canada | Ontario, Burlington, Calgary, Edmonton, Hamilton, Kingston, Kitchener, London, Niagara Falls, Ottawa, Vancouver, Victoria | www.delcan.com |
| InterVISTAS Consulting | Canada | Vancouver, Ottawa, Winnipeg | www.intervistas.com |
| Delcan | USA | Schaumburg, Vienna, Atlanta, Austin, Coral Springs, Denver, Ft. Lauderdale, Los Angeles, Salem | www.delcan.com |
| Intelligent Devices | USA | Suwanee | www.intelligentdevicesinc.com |
| InterVISTAS Consulting | USA | Bethesda | www.intervistas.com |
Ásia
| Empresa | País | Escritórios | Website |
| DHV (Beijing) Environmental Engineering Co. | China | Beijing | www.dhv.cn |
| DHV Engineering Consultancy (Shanghai) Co. | China | Shanghai, Guangzhou | www.dhv.cn |
| Delcan | Hong Kong | Kwun Tong | www.delcan.com |
| DHV Global Engineering Center | India | Noida | |
| DHV India | India | New Delhi, Bangalore, Chennai, Hyderabad, Lucknow | www.dhvindia.com |
| Mitra Lingkungan Dutaconsult | Indonesia | Jakarta Selatan | www.mld.co.id |
| SADECO | Saudi Arabia | Jeddah | |
| DHV Planetek | Taiwan | Kaohsiung, Taipei | www.dhvplanetek.com.tw |
| DHV | Vietname | Hanoi, Ho Chi Minh City | www.dhv.vn |
| DHV MED | Israel | Netanya | www.dhvmed.com |
| P.G.L. & Delcan Israel | Israel | Azor | www.pgl.co.il |
Europa
| Empresa | País | Escritórios | Website |
| DHV B.V. | The Netherlands | Amersfoort, Deventer, Eindhoven, Groningen, Maastricht, Rotterdam, The Hague, Utrecht, Zaandam | www.dhv.com |
| DHV NPC | The Netherlands | Utrecht, Amsterdam, Eindhoven, Rotterdam, Zwolle | www.npc.eu |
| Infraflex B.V. | The Netherlands | Utrecht | www.infraflex.nl |
| InterVISTAS Consulting Group | The Netherlands | The Hague | www.intervistas.com |
| NACO, Netherlands Airport Consultants | The Netherlands | The Hague | www.naco.nl |
| Protected Storage Engineers (PSE) | The Netherlands | Nijmegen | www.psengineers.nl |
| Tunnel Engineering Consultants (TEC) | The Netherlands | Nijmegen | www.tec-tunnel.com |
| DHV CR | Czech Republic | Praha, Brno, Ostrava | www.dhv.cz |
| DHV Polska | Poland | Warszawa, Szczecin | www.dhv.pl |
| Hydroprojekt | Poland | Warszawa, Sosnowiec, Wloclawek | www.hydroprojekt.com.pl |
| DHV, S.A. | Portugal | Amadora, Oporto | www.dhv.pt |
| InterVISTAS Consulting Group | United Kingdom | London | www.intervistas.com |
| Turgis Consulting | United Kingdom | London | www.turgisconsulting.co.uk |
| Delcan | United Kingdom | Surrey | www.delcan.com |
África
| Empresa | País | Escritórios | Website |
| SSI | South Africa | Gauteng, Buffalo City (East London), Cape Town, Chris Hani (Queenstown), Ekurhuleni (Bedfordview), Emnambithi (Ladysmith), eThekwini (Durban), George, iLembe (Ballito), Knysna, Mafikeng, Mangaung (Bloemfontein), Mbombela (Nelspruit), Mossel Bay, Msunduzi (Pietermaritzburg), Nelson Mandela Bay (Port Elizabeth), Newcastle, Plettenburg Bay, Polokwane, Sol Plaatje (Kimberley), Tshwane (Pretoria), Ugu (Port Shepstone) | www.ssi-dhv.com |
| Turgis Consulting | South Africa | Northcliff | www.turgis.co.za |
| Delcan | South Africa | Cape Town | www.delcan.com |
| SSI | Botswana | Gaborone | www.ssi-dhv.com |
| DHV, Lda. | Mozambique | Maputo | www.dhv.co.mz |
| SSI | Zimbabwe | Harare | www.ssi-dhv.com |