Republic of Turkey- Prime Ministry Undersecretariat of Treasury Central Finance and Contracts Unit
Republic of Turkey- Prime Ministry Housing Development Administration of Turkey
Republic of Turkey - Ministry of National Defence
Republic of Turkey- Ministry of Environment and Urban Planning
Republic of Turkey - Ministry of Energy and Natural Resources
Republic of Turkey - Ministry of Food, Agriculture and Livestock
Republic of Turkey - Ministry of Industry and Trade
Republic of Turkey- Ministry of Transport, Maritime Affairs and Communication
Environmental Protection Ag. for Special Areas
Ministry of National Defence, Department of NATO Infrastructure
General Directorate of Construction Works
General Directorate of State Hydraulic Works (DSİ)
General Directorate of Highways
General Directorate of Turkish State Railways
General Directorate of State Airports
General Directorate of Rural Affairs
General Directorate of Agricultural Reform
General Directorate of Turkish Coal Enterprises
General Directorate of Electricity Generation Company (EÜAŞ)
General Directorate of Petroleum Pipeline Corporation (BOTAŞ)
Metropolitan Municipality of Ankara
Metropolitan Municipality of Istanbul
Metropolitan Municipality of Adapazarı
Metropolitan Municipality of Tarsus
Metropolitan Municipality of Kepez
Governorship of Kocaeli Provincial Directorate For National Education
Ankara Water and Sewerage Administration (ASKİ)
Eti Holding Co. Inc
General Directorate of Etibank
Scientific and Technological Research Council of Turkey (TÜBİTAK) Turkish Institute of Management Sciences
Turkish Confederation of Employer Associations
Plane Services Inc. (USAŞ)
Gebkim Kocaeli - Gebze Organized Industrial Zone
Kuyumcukent Real Estate Investment Co. Inc. (KUYAŞ)
Kuyumcukent S.S. Istanbul Jewellery Craftsmen Office Cooperative Society for the Construction of Collective Work Place
UN Office of Project Services (UNOPS)
U.S.A. Department of Defence
U.S. Depertment of State, Bureau of OBO
The United States Air Force - (USAF)
U.S.A. Land Forces Command
U.S.A. Land Forces Command European Transatlantic M.
German Technical Assistance (GTZ)
Hashemite Kingdom of Jordan, Ministry of Water and Irrigation
Islamic Republic of Afghanistan - Ministry of Public Works
Libyan Development and Investment Company
Libyan Big Man-Made River Irrigation Administration
Libyan Housing and Infrastructure Board (HIB)
Republic of Azerbaijan - Azerbaijan Ministry of Transport
Republic of Azerbaijan - Water Resources Development and Management Company
Uganda National Road Authority
Kuwait Public Authority for Housing Welfare
The Louis Berger Group, Inc.
Teknofarm International Ltd.