Yapñ Merkezi Holding A.à Â. is a Turkish group company whose field of activity is primarily in the construction industry. It was founded in 1965 by Ersin ArñoÃÂlu and Köksal Anadol in Istanbul. As the first and largest company of the Yapñ Merkezi Group, Yapñ Merkezi Construction and Industry has realized the design and construction of a wide variety of buildings, rail systems and heavy construction projects. Since 1980, the company has also realized contracts in countries such as Saudi Arabia, Algeria, Morocco, the United Arab Emirates, Sudan, Ethiopia, Tanzania and Slovenia.
The company, which takes the lead in the projects tendered with the "build-operate-transfer" model, has so far received 243 billion 909 million 543 thousand liras worth of public tenders.
Through its specialized companies, Yapñ Merkezi has realized national and international projects within the fields of transportation systems, rail systems, tunnels, bridges, viaducts, industrial and general service buildings, mass housing and city planning, water collection and supply systems, restoration, strengthening, and repair works.
Yapñ Merkezi Prefabrication was established in 1978. It was the first company in its field to obtain the ISO 9001 Quality Assurance certificate in Turkey. In 1987, Yapñ Merkezi founded Freysaà  in partnership with Freyssinet International. Since then, Freysaà  has realized projects featuring advanced construction technologies such as cable stay systems, post-tensioning, heavy lifting and ground anchorage. Yapñkonut joined the group in 1994 and accomplished projects such as ÃÂamkonaklar, Sokullu Estates, NP12 Estates, Sisli Plaza and the Arkeon Housing Complex. In 1995, qualified Education Institutions Inc. was founded and Irmak Schools was opened. In 1996, the group introduced SUBOR Pipe Industry Inc. to manufacture high-end technology composite construction materials.
Yapñray joined the group in 1995 to take advantage of the group companyâÂÂs experience in the rail systems field, considering the increasing demand for urban and intercity railway transport. Yapñray provides design, development and operation services for railway systems.
Today, most of IstanbulâÂÂs operating rail systems have been constructed by Yapñ Merkezi. Dubai Metro, Ankara-Konya High-Speed Railway, Casablanca Tramway, the in Algeria, Medina High-Speed Train Station, Izmir Metro, Eskià Âehir Tram, Kayseray (Kayseri Light Rail System), Taksim-Kabataà  Funicular System and Antalya Tram are other examples of Yapñ MerkeziâÂÂs turn-key projects.
The 2004 UITP (International Association for Public Transport) âÂÂLight Rail Project of the Yearâ award was given to Estram (Eskià Âehir LRTS), UITP âÂÂ2010 Best Urban Integration Project of the Yearâ and British Light Transit AssociationâÂÂs âÂÂWorldwide Project of the Yearâ awards were given Kayseray (Kayseri Light Rail System). Both tramway systems were constructed by Yapñ Merkezi as a turnkey project.
In 2012, Yapñ Merkezi Holding established Yapñ Merkezi IDIS Engineering as its technology company and developed a signaling system which is certified as SIL 4 with its safety culture in railway. Yapñ Merkezi IDIS works on railway signaling and telecommunications systems. Additionally, the company provides engineering services for electromechanical systems on railways, land routes and tunnels. IDIS works as a design, applications and systems supplier. R&D in transportation technology, signaling and structural health monitoring are also part of the group's services.