Özgün İnşaat, a leading company of KRK Holding, was established in 1993. The company operates in fields of tunneling, transportation, infrastructure, superstructure, mining, and energy. It has proved its reliability while meeting the expectations and the needs of the projects carried out with technological solutions within the scope of correct methods and international quality standards. Özgün İnşaat has achieved international success with its own financial strength, human resources wealth of machinery and equipment as far as its experience and know-how.

Soner Temel Mühendislik İnşaat ve Ticaret Anonim Şirketi (STM) is among the leading Tunneling and Infrastructure companies in Turkey. Since its establishment in 2000, STM has been producing creative solutions by following closely the developments in technology with its strong technical and application staff. As a result, it builts good relations in the sector. It creates added value for its brand with its high performance and quality applications. This situation differentiates STM from its competitors and brings it to the preferred position.                                         

Operating under the umbrella of KRK Holding, Özgün Turizm Yatırımları ve Tic. Inc. entered the tourism sector with the Hilton Garden Inn brand by completing its first hotel construction at international standards in Izmir in 2015 with its own funds. Hilton Garden Inn İzmir Bayraklı hotel, managed by Özgün Turizm, has also contributed significantly to İzmir tourism with “Garden's Hill Lounge & Event Venue” which was put into service on August 1, 2021. Özgün Turizm will continue its investments in the tourism sector throughout Turkey and in the international arena.

OMEGA Enerji ve Yatırım A.Ş. is the first energy investment firm of KRK Holding. The company, which started its operations in April 2007, was established as an energy investment company. OMEGA Enerji ve Yatırım A.Ş. has a Hydroelectric Power Plant licensed by EMRA (Energy Market Regulatory Authority) and Solar Power Plants located in different locations. The total reference of Omega Enerji ve Yatırım A.Ş in the field of renewable energy is 72 MW. Project development, new investment studies and international EPC works in the field of renewable energy continue within our company.