KOİNTAŞ inc. was founded in 1993 and has been in the field of general contracting, residential and commercial building constructions, multi-family residential building construction, and construction material marketing since then. The company has been operating in İstanbul Turkey. KOİNTAŞ has been also spent tremendous time in real estate investments. Up until now, KOİNTAŞ has erected numerous commercial, residential, and industrial structures and buildings by using steel and concrete materials with high technology vision. KOİNTAŞ has also become and expert on remodeling historical buildings since it was founded.