Mr. H. Ayduk Koray, the founder of our Group of Companies, after graduating from Istanbul Technical University Faculty of Construction in 1950, he started his freelance business life by establishing a company in his own name.
1956
The company was founded by H. Ayduk Koray, Ankara
1962
Contract for the construction of TUSLOG (US Logistics Group) Facilities, Ankara
1968
First public building project: General Directorate of State Hydraulic Works, Ankara
1970
New style in Turkish Architecture: exposed concrete facade
1972
Completion of the İşbank Headquarters Building: Koray's and Ankara's first high-rise building project. Climbing formwork and slab formwork system with pipe struts were used for the first time in Turkey.
1976
Relocation of the Head Office from Ankara to Istanbul
1981
First overseas project. Ajyad Inter-Continental Hotel in Mecca, Saudi Arabia.
1986
The first step in the development of Levent as Istanbul's financial center. Yapı Kredi Plaza, Istanbul
1987
Ankara's first shopping center: Karum and Ankara Sheraton Hotel, in the same concept
1988
First smart office building: Sabancı Center, Istanbul
1994
Entry to the Russian market: Moscow Tax Office Building
1995
A first in organization and project management: Akbank branches Corporate Identity Renewal Project
1998
Sabancı University: Turkey's best designed and built university campus project.
1998
Koray Real Estate Investment Partnership Inc. went public
1999
MIPIM 1st prize: Istanbul-Istanbul Project
2000
Town, the birth of a new settlement center
2002
MIPIM 1. ödülü: İstanbul-İstanbul Projesi
2004
Entry to the Jordanian market: King's Academy
2005
First shopping center in Eskisehir: NEO Shopping Center
2009
A first in Azerbaijan. Baku Hilton Hotel -
2010
The first LEED and BREEAM certified educational institution: Sabancı University Nano Technology Center
2011
The first reinforced concrete building in Turkey using inclined plane and angled structural systems: Crystal Tower, Istanbul.
2011
The first high-rise building in Turkey with full automation using high speed double deck elevators: Levent 199, Istanbul
2012
What the 2014 Winter Olympics brought to Sochi: Marriott Resort Hotel
2013
T. İşbank Tuzla Technology and Operations Center (TUTOM): It is an example of a complex structure that gathers T. İşbank and its subsidiaries under one roof with approximately 5000 personnel. -
2014
1 Mwp /Turkey's first solar power plant was commissioned
2017
Within the scope of the ÜNİYURT project, accommodation and social opportunities were provided for 6 thousand students in 4 different provinces.
2017
105 Mwp/ Solar Power Plants were commissioned
2020
Started in 2000 and one of the most important projects of that period, the rebirth of the Kasaba project started with the Kasaba 4 phase and continues to grow by adding new phases. The project offers a completely different world to those who want to leave the stress of city life behind.
2020
10.5 Mwp/ Biomass Facility (Manisa) Commissioned
2022
Hun Renewable Energy Production Inc. went public
2025
Koray Venture Capital Investment Partnership Inc. was established
2025
Koray is 70 years old...