İSTOÇ Wholesale Cooperative which is the administrative building of the Istanbul Wholesalers Cooperative, has a composite panel in its carrier shell and a transparent silicon system with reflective glass on the ceiling. Interior floors and walls are covered with natural granite stones to protect the weight of the building. A modern look was achieved by using carpets, PVC and ceramic tiles, raised flooring systems, aluminum suspended ceilings and lightly functional demountable wall panels.

Employer: İSTOÇ
Location: Mahmutbey İstanbul
Architect: Ali Zaimler
Year: 2008
Area: 2,800 m2
Site Chief: Esin Eştürk-Emre Susam